aboutsummaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
Diffstat (limited to 'include')
-rw-r--r--include/asm-generic/gpio.h5
-rw-r--r--include/asm-m32r/spinlock.h3
-rw-r--r--include/drm/drm_crtc_helper.h3
-rw-r--r--include/drm/drm_os_linux.h4
-rw-r--r--include/linux/Kbuild1
-rw-r--r--include/linux/binfmts.h3
-rw-r--r--include/linux/buffer_head.h12
-rw-r--r--include/linux/cgroup.h137
-rw-r--r--include/linux/compat.h6
-rw-r--r--include/linux/cpu.h16
-rw-r--r--include/linux/cpuset.h33
-rw-r--r--include/linux/ext3_fs.h5
-rw-r--r--include/linux/fs.h14
-rw-r--r--include/linux/fs_struct.h10
-rw-r--r--include/linux/hdreg.h66
-rw-r--r--include/linux/highmem.h29
-rw-r--r--include/linux/i2c/at24.h4
-rw-r--r--include/linux/idr.h1
-rw-r--r--include/linux/kernel.h4
-rw-r--r--include/linux/lockdep.h17
-rw-r--r--include/linux/memcontrol.h20
-rw-r--r--include/linux/memory.h11
-rw-r--r--include/linux/mm.h2
-rw-r--r--include/linux/mm_types.h6
-rw-r--r--include/linux/mnt_namespace.h2
-rw-r--r--include/linux/mpage.h10
-rw-r--r--include/linux/nsproxy.h1
-rw-r--r--include/linux/page_cgroup.h13
-rw-r--r--include/linux/pagemap.h12
-rw-r--r--include/linux/pci_ids.h1
-rw-r--r--include/linux/ptrace.h1
-rw-r--r--include/linux/raid/bitmap.h288
-rw-r--r--include/linux/raid/linear.h31
-rw-r--r--include/linux/raid/md.h81
-rw-r--r--include/linux/raid/md_k.h402
-rw-r--r--include/linux/raid/md_u.h35
-rw-r--r--include/linux/raid/multipath.h42
-rw-r--r--include/linux/raid/pq.h132
-rw-r--r--include/linux/raid/raid0.h30
-rw-r--r--include/linux/raid/raid1.h134
-rw-r--r--include/linux/raid/raid10.h123
-rw-r--r--include/linux/raid/raid5.h402
-rw-r--r--include/linux/raid/xor.h2
-rw-r--r--include/linux/rtc-v3020.h6
-rw-r--r--include/linux/sched.h76
-rw-r--r--include/linux/spi/eeprom.h6
-rw-r--r--include/linux/spi/spi_gpio.h6
-rw-r--r--include/linux/spinlock.h6
-rw-r--r--include/linux/synclink.h1
-rw-r--r--include/linux/syscalls.h4
-rw-r--r--include/linux/timeriomem-rng.h2
-rw-r--r--include/linux/tracehook.h15
-rw-r--r--include/linux/workqueue.h5
-rw-r--r--include/net/tcp.h15
54 files changed, 498 insertions, 1798 deletions
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index 81797ec9ab2..d6c379dc64f 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -55,6 +55,10 @@ struct module;
* handled is (base + ngpio - 1).
* @can_sleep: flag must be set iff get()/set() methods sleep, as they
* must while accessing GPIO expander chips over I2C or SPI
+ * @names: if set, must be an array of strings to use as alternative
+ * names for the GPIOs in this chip. Any entry in the array
+ * may be NULL if there is no alias for the GPIO, however the
+ * array must be @ngpio entries long.
*
* A gpio_chip can help platforms abstract various sources of GPIOs so
* they can all be accessed through a common programing interface.
@@ -92,6 +96,7 @@ struct gpio_chip {
struct gpio_chip *chip);
int base;
u16 ngpio;
+ char **names;
unsigned can_sleep:1;
unsigned exported:1;
};
diff --git a/include/asm-m32r/spinlock.h b/include/asm-m32r/spinlock.h
index f5cfba81ee1..dded923883b 100644
--- a/include/asm-m32r/spinlock.h
+++ b/include/asm-m32r/spinlock.h
@@ -316,6 +316,9 @@ static inline int __raw_write_trylock(raw_rwlock_t *lock)
return 0;
}
+#define __raw_read_lock_flags(lock, flags) __raw_read_lock(lock)
+#define __raw_write_lock_flags(lock, flags) __raw_write_lock(lock)
+
#define _raw_spin_relax(lock) cpu_relax()
#define _raw_read_relax(lock) cpu_relax()
#define _raw_write_relax(lock) cpu_relax()
diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h
index c7d4b2e606a..ec073d8288d 100644
--- a/include/drm/drm_crtc_helper.h
+++ b/include/drm/drm_crtc_helper.h
@@ -33,7 +33,6 @@
#ifndef __DRM_CRTC_HELPER_H__
#define __DRM_CRTC_HELPER_H__
-#include <linux/i2c.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/idr.h>
@@ -92,7 +91,7 @@ struct drm_connector_helper_funcs {
extern int drm_helper_probe_single_connector_modes(struct drm_connector *connector, uint32_t maxX, uint32_t maxY);
extern void drm_helper_disable_unused_functions(struct drm_device *dev);
extern int drm_helper_hotplug_stage_two(struct drm_device *dev);
-extern bool drm_helper_initial_config(struct drm_device *dev, bool can_grow);
+extern bool drm_helper_initial_config(struct drm_device *dev);
extern int drm_crtc_helper_set_config(struct drm_mode_set *set);
extern bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
struct drm_display_mode *mode,
diff --git a/include/drm/drm_os_linux.h b/include/drm/drm_os_linux.h
index 013551d03c0..26641e95e0a 100644
--- a/include/drm/drm_os_linux.h
+++ b/include/drm/drm_os_linux.h
@@ -7,12 +7,12 @@
#include <linux/delay.h>
#ifndef readq
-static u64 readq(void __iomem *reg)
+static inline u64 readq(void __iomem *reg)
{
return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32);
}
-static void writeq(u64 val, void __iomem *reg)
+static inline void writeq(u64 val, void __iomem *reg)
{
writel(val & 0xffffffff, reg);
writel(val >> 32, reg + 0x4UL);
diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index a67b6227d27..ca9b9b9bd33 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -67,6 +67,7 @@ header-y += falloc.h
header-y += fd.h
header-y += fdreg.h
header-y += fib_rules.h
+header-y += fiemap.h
header-y += firewire-cdev.h
header-y += firewire-constants.h
header-y += fuse.h
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index 77b4a9e4600..6638b8148de 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -35,8 +35,7 @@ struct linux_binprm{
#endif
struct mm_struct *mm;
unsigned long p; /* current top of mem */
- unsigned int sh_bang:1,
- misc_bang:1,
+ unsigned int
cred_prepared:1,/* true if creds already prepared (multiple
* preps happen for interpreters) */
cap_effective:1;/* true if has elevated effective capabilities,
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 3d7bcde2e33..7b73bb8f197 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -332,22 +332,10 @@ extern int __set_page_dirty_buffers(struct page *page);
static inline void buffer_init(void) {}
static inline int try_to_free_buffers(struct page *page) { return 1; }
-static inline int sync_blockdev(struct block_device *bdev) { return 0; }
static inline int inode_has_buffers(struct inode *inode) { return 0; }
static inline void invalidate_inode_buffers(struct inode *inode) {}
static inline int remove_inode_buffers(struct inode *inode) { return 1; }
static inline int sync_mapping_buffers(struct address_space *mapping) { return 0; }
-static inline void invalidate_bdev(struct block_device *bdev) {}
-
-static inline struct super_block *freeze_bdev(struct block_device *sb)
-{
- return NULL;
-}
-
-static inline int thaw_bdev(struct block_device *bdev, struct super_block *sb)
-{
- return 0;
-}
#endif /* CONFIG_BLOCK */
#endif /* _LINUX_BUFFER_HEAD_H */
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 499900d0cee..4316a546beb 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -15,6 +15,7 @@
#include <linux/cgroupstats.h>
#include <linux/prio_heap.h>
#include <linux/rwsem.h>
+#include <linux/idr.h>
#ifdef CONFIG_CGROUPS
@@ -22,6 +23,7 @@ struct cgroupfs_root;
struct cgroup_subsys;
struct inode;
struct cgroup;
+struct css_id;
extern int cgroup_init_early(void);
extern int cgroup_init(void);
@@ -47,18 +49,24 @@ enum cgroup_subsys_id {
/* Per-subsystem/per-cgroup state maintained by the system. */
struct cgroup_subsys_state {
- /* The cgroup that this subsystem is attached to. Useful
+ /*
+ * The cgroup that this subsystem is attached to. Useful
* for subsystems that want to know about the cgroup
- * hierarchy structure */
+ * hierarchy structure
+ */
struct cgroup *cgroup;
- /* State maintained by the cgroup system to allow subsystems
+ /*
+ * State maintained by the cgroup system to allow subsystems
* to be "busy". Should be accessed via css_get(),
- * css_tryget() and and css_put(). */
+ * css_tryget() and and css_put().
+ */
atomic_t refcnt;
unsigned long flags;
+ /* ID for this css, if possible */
+ struct css_id *id;
};
/* bits in struct cgroup_subsys_state flags field */
@@ -120,19 +128,26 @@ static inline void css_put(struct cgroup_subsys_state *css)
enum {
/* Control Group is dead */
CGRP_REMOVED,
- /* Control Group has previously had a child cgroup or a task,
- * but no longer (only if CGRP_NOTIFY_ON_RELEASE is set) */
+ /*
+ * Control Group has previously had a child cgroup or a task,
+ * but no longer (only if CGRP_NOTIFY_ON_RELEASE is set)
+ */
CGRP_RELEASABLE,
/* Control Group requires release notifications to userspace */
CGRP_NOTIFY_ON_RELEASE,
+ /*
+ * A thread in rmdir() is wating for this cgroup.
+ */
+ CGRP_WAIT_ON_RMDIR,
};
struct cgroup {
unsigned long flags; /* "unsigned long" so bitops work */
- /* count users of this cgroup. >0 means busy, but doesn't
- * necessarily indicate the number of tasks in the
- * cgroup */
+ /*
+ * count users of this cgroup. >0 means busy, but doesn't
+ * necessarily indicate the number of tasks in the cgroup
+ */
atomic_t count;
/*
@@ -142,7 +157,7 @@ struct cgroup {
struct list_head sibling; /* my parent's children */
struct list_head children; /* my children */
- struct cgroup *parent; /* my parent */
+ struct cgroup *parent; /* my parent */
struct dentry *dentry; /* cgroup fs entry, RCU protected */
/* Private pointers for each registered subsystem */
@@ -177,11 +192,12 @@ struct cgroup {
struct rcu_head rcu_head;
};
-/* A css_set is a structure holding pointers to a set of
+/*
+ * A css_set is a structure holding pointers to a set of
* cgroup_subsys_state objects. This saves space in the task struct
* object and speeds up fork()/exit(), since a single inc/dec and a
- * list_add()/del() can bump the reference count on the entire
- * cgroup set for a task.
+ * list_add()/del() can bump the reference count on the entire cgroup
+ * set for a task.
*/
struct css_set {
@@ -226,13 +242,8 @@ struct cgroup_map_cb {
void *state;
};
-/* struct cftype:
- *
- * The files in the cgroup filesystem mostly have a very simple read/write
- * handling, some common function will take care of it. Nevertheless some cases
- * (read tasks) are special and therefore I define this structure for every
- * kind of file.
- *
+/*
+ * struct cftype: handler definitions for cgroup control files
*
* When reading/writing to a file:
* - the cgroup to use is file->f_dentry->d_parent->d_fsdata
@@ -241,10 +252,17 @@ struct cgroup_map_cb {
#define MAX_CFTYPE_NAME 64
struct cftype {
- /* By convention, the name should begin with the name of the
- * subsystem, followed by a period */
+ /*
+ * By convention, the name should begin with the name of the
+ * subsystem, followed by a period
+ */
char name[MAX_CFTYPE_NAME];
int private;
+ /*
+ * If not 0, file mode is set to this value, otherwise it will
+ * be figured out automatically
+ */
+ mode_t mode;
/*
* If non-zero, defines the maximum length of string that can
@@ -319,15 +337,20 @@ struct cgroup_scanner {
void (*process_task)(struct task_struct *p,
struct cgroup_scanner *scan);
struct ptr_heap *heap;
+ void *data;
};
-/* Add a new file to the given cgroup directory. Should only be
- * called by subsystems from within a populate() method */
+/*
+ * Add a new file to the given cgroup directory. Should only be
+ * called by subsystems from within a populate() method
+ */
int cgroup_add_file(struct cgroup *cgrp, struct cgroup_subsys *subsys,
const struct cftype *cft);
-/* Add a set of new files to the given cgroup directory. Should
- * only be called by subsystems from within a populate() method */
+/*
+ * Add a set of new files to the given cgroup directory. Should
+ * only be called by subsystems from within a populate() method
+ */
int cgroup_add_files(struct cgroup *cgrp,
struct cgroup_subsys *subsys,
const struct cftype cft[],
@@ -339,15 +362,15 @@ int cgroup_path(const struct cgroup *cgrp, char *buf, int buflen);
int cgroup_task_count(const struct cgroup *cgrp);
-/* Return true if the cgroup is a descendant of the current cgroup */
-int cgroup_is_descendant(const struct cgroup *cgrp);
+/* Return true if cgrp is a descendant of the task's cgroup */
+int cgroup_is_descendant(const struct cgroup *cgrp, struct task_struct *task);
/* Control Group subsystem type. See Documentation/cgroups.txt for details */
struct cgroup_subsys {
struct cgroup_subsys_state *(*create)(struct cgroup_subsys *ss,
struct cgroup *cgrp);
- void (*pre_destroy)(struct cgroup_subsys *ss, struct cgroup *cgrp);
+ int (*pre_destroy)(struct cgroup_subsys *ss, struct cgroup *cgrp);
void (*destroy)(struct cgroup_subsys *ss, struct cgroup *cgrp);
int (*can_attach)(struct cgroup_subsys *ss,
struct cgroup *cgrp, struct task_struct *tsk);
@@ -364,6 +387,11 @@ struct cgroup_subsys {
int active;
int disabled;
int early_init;
+ /*
+ * True if this subsys uses ID. ID is not available before cgroup_init()
+ * (not available in early_init time.)
+ */
+ bool use_id;
#define MAX_CGROUP_TYPE_NAMELEN 32
const char *name;
@@ -386,6 +414,9 @@ struct cgroup_subsys {
*/
struct cgroupfs_root *root;
struct list_head sibling;
+ /* used when use_id == true */
+ struct idr idr;
+ spinlock_t id_lock;
};
#define SUBSYS(_x) extern struct cgroup_subsys _x ## _subsys;
@@ -419,7 +450,8 @@ struct cgroup_iter {
struct list_head *task;
};
-/* To iterate across the tasks in a cgroup:
+/*
+ * To iterate across the tasks in a cgroup:
*
* 1) call cgroup_iter_start to intialize an iterator
*
@@ -428,9 +460,10 @@ struct cgroup_iter {
*
* 3) call cgroup_iter_end() to destroy the iterator.
*
- * Or, call cgroup_scan_tasks() to iterate through every task in a cpuset.
- * - cgroup_scan_tasks() holds the css_set_lock when calling the test_task()
- * callback, but not while calling the process_task() callback.
+ * Or, call cgroup_scan_tasks() to iterate through every task in a
+ * cgroup - cgroup_scan_tasks() holds the css_set_lock when calling
+ * the test_task() callback, but not while calling the process_task()
+ * callback.
*/
void cgroup_iter_start(struct cgroup *cgrp, struct cgroup_iter *it);
struct task_struct *cgroup_iter_next(struct cgroup *cgrp,
@@ -439,6 +472,44 @@ void cgroup_iter_end(struct cgroup *cgrp, struct cgroup_iter *it);
int cgroup_scan_tasks(struct cgroup_scanner *scan);
int cgroup_attach_task(struct cgroup *, struct task_struct *);
+/*
+ * CSS ID is ID for cgroup_subsys_state structs under subsys. This only works
+ * if cgroup_subsys.use_id == true. It can be used for looking up and scanning.
+ * CSS ID is assigned at cgroup allocation (create) automatically
+ * and removed when subsys calls free_css_id() function. This is because
+ * the lifetime of cgroup_subsys_state is subsys's matter.
+ *
+ * Looking up and scanning function should be called under rcu_read_lock().
+ * Taking cgroup_mutex()/hierarchy_mutex() is not necessary for following calls.
+ * But the css returned by this routine can be "not populated yet" or "being
+ * destroyed". The caller should check css and cgroup's status.
+ */
+
+/*
+ * Typically Called at ->destroy(), or somewhere the subsys frees
+ * cgroup_subsys_state.
+ */
+void free_css_id(struct cgroup_subsys *ss, struct cgroup_subsys_state *css);
+
+/* Find a cgroup_subsys_state which has given ID */
+
+struct cgroup_subsys_state *css_lookup(struct cgroup_subsys *ss, int id);
+
+/*
+ * Get a cgroup whose id is greater than or equal to id under tree of root.
+ * Returning a cgroup_subsys_state or NULL.
+ */
+struct cgroup_subsys_state *css_get_next(struct cgroup_subsys *ss, int id,
+ struct cgroup_subsys_state *root, int *foundid);
+
+/* Returns true if root is ancestor of cg */
+bool css_is_ancestor(struct cgroup_subsys_state *cg,
+ const struct cgroup_subsys_state *root);
+
+/* Get id and depth of css */
+unsigned short css_id(struct cgroup_subsys_state *css);
+unsigned short css_depth(struct cgroup_subsys_state *css);
+
#else /* !CONFIG_CGROUPS */
static inline int cgroup_init_early(void) { return 0; }
diff --git a/include/linux/compat.h b/include/linux/compat.h
index b880864672d..9723edd6455 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -191,6 +191,12 @@ asmlinkage ssize_t compat_sys_readv(unsigned long fd,
const struct compat_iovec __user *vec, unsigned long vlen);
asmlinkage ssize_t compat_sys_writev(unsigned long fd,
const struct compat_iovec __user *vec, unsigned long vlen);
+asmlinkage ssize_t compat_sys_preadv(unsigned long fd,
+ const struct compat_iovec __user *vec,
+ unsigned long vlen, u32 pos_high, u32 pos_low);
+asmlinkage ssize_t compat_sys_pwritev(unsigned long fd,
+ const struct compat_iovec __user *vec,
+ unsigned long vlen, u32 pos_high, u32 pos_low);
int compat_do_execve(char * filename, compat_uptr_t __user *argv,
compat_uptr_t __user *envp, struct pt_regs * regs);
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index c2747ac2ae4..2643d848df9 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -23,7 +23,6 @@
#include <linux/node.h>
#include <linux/compiler.h>
#include <linux/cpumask.h>
-#include <linux/mutex.h>
struct cpu {
int node_id; /* The node which contains the CPU */
@@ -103,16 +102,6 @@ extern struct sysdev_class cpu_sysdev_class;
#ifdef CONFIG_HOTPLUG_CPU
/* Stop CPUs going up and down. */
-static inline void cpuhotplug_mutex_lock(struct mutex *cpu_hp_mutex)
-{
- mutex_lock(cpu_hp_mutex);
-}
-
-static inline void cpuhotplug_mutex_unlock(struct mutex *cpu_hp_mutex)
-{
- mutex_unlock(cpu_hp_mutex);
-}
-
extern void get_online_cpus(void);
extern void put_online_cpus(void);
#define hotcpu_notifier(fn, pri) { \
@@ -126,11 +115,6 @@ int cpu_down(unsigned int cpu);
#else /* CONFIG_HOTPLUG_CPU */
-static inline void cpuhotplug_mutex_lock(struct mutex *cpu_hp_mutex)
-{ }
-static inline void cpuhotplug_mutex_unlock(struct mutex *cpu_hp_mutex)
-{ }
-
#define get_online_cpus() do { } while (0)
#define put_online_cpus() do { } while (0)
#define hotcpu_notifier(fn, pri) do { (void)(fn); } while (0)
diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h
index 2e0d79678de..05ea1dd7d68 100644
--- a/include/linux/cpuset.h
+++ b/include/linux/cpuset.h
@@ -12,6 +12,7 @@
#include <linux/cpumask.h>
#include <linux/nodemask.h>
#include <linux/cgroup.h>
+#include <linux/mm.h>
#ifdef CONFIG_CPUSETS
@@ -29,19 +30,29 @@ void cpuset_init_current_mems_allowed(void);
void cpuset_update_task_memory_state(void);
int cpuset_nodemask_valid_mems_allowed(nodemask_t *nodemask);
-extern int __cpuset_zone_allowed_softwall(struct zone *z, gfp_t gfp_mask);
-extern int __cpuset_zone_allowed_hardwall(struct zone *z, gfp_t gfp_mask);
+extern int __cpuset_node_allowed_softwall(int node, gfp_t gfp_mask);
+extern int __cpuset_node_allowed_hardwall(int node, gfp_t gfp_mask);
-static int inline cpuset_zone_allowed_softwall(struct zone *z, gfp_t gfp_mask)
+static inline int cpuset_node_allowed_softwall(int node, gfp_t gfp_mask)
{
return number_of_cpusets <= 1 ||
- __cpuset_zone_allowed_softwall(z, gfp_mask);
+ __cpuset_node_allowed_softwall(node, gfp_mask);
}
-static int inline cpuset_zone_allowed_hardwall(struct zone *z, gfp_t gfp_mask)
+static inline int cpuset_node_allowed_hardwall(int node, gfp_t gfp_mask)
{
return number_of_cpusets <= 1 ||
- __cpuset_zone_allowed_hardwall(z, gfp_mask);
+ __cpuset_node_allowed_hardwall(node, gfp_mask);
+}
+
+static inline int cpuset_zone_allowed_softwall(struct zone *z, gfp_t gfp_mask)
+{
+ return cpuset_node_allowed_softwall(zone_to_nid(z), gfp_mask);
+}
+
+static inline int cpuset_zone_allowed_hardwall(struct zone *z, gfp_t gfp_mask)
+{
+ return cpuset_node_allowed_hardwall(zone_to_nid(z), gfp_mask);
}
extern int cpuset_mems_allowed_intersects(const struct task_struct *tsk1,
@@ -112,6 +123,16 @@ static inline int cpuset_nodemask_valid_mems_allowed(nodemask_t *nodemask)
return 1;
}
+static inline int cpuset_node_allowed_softwall(int node, gfp_t gfp_mask)
+{
+ return 1;
+}
+
+static inline int cpuset_node_allowed_hardwall(int node, gfp_t gfp_mask)
+{
+ return 1;
+}
+
static inline int cpuset_zone_allowed_softwall(struct zone *z, gfp_t gfp_mask)
{
return 1;
diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h
index dd495b8c309..e263acaa405 100644
--- a/include/linux/ext3_fs.h
+++ b/include/linux/ext3_fs.h
@@ -893,9 +893,8 @@ extern int ext3_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
u64 start, u64 len);
/* ioctl.c */
-extern int ext3_ioctl (struct inode *, struct file *, unsigned int,
- unsigned long);
-extern long ext3_compat_ioctl (struct file *, unsigned int, unsigned long);
+extern long ext3_ioctl(struct file *, unsigned int, unsigned long);
+extern long ext3_compat_ioctl(struct file *, unsigned int, unsigned long);
/* namei.c */
extern int ext3_orphan_add(handle_t *, struct inode *);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 61211ad823f..a09e17c8f5f 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1741,6 +1741,8 @@ extern void drop_collected_mounts(struct vfsmount *);
extern int vfs_statfs(struct dentry *, struct kstatfs *);
+extern int current_umask(void);
+
/* /sys/fs */
extern struct kobject *fs_kobj;
@@ -1885,6 +1887,18 @@ extern int fsync_super(struct super_block *);
extern int fsync_no_super(struct block_device *);
#else
static inline void bd_forget(struct inode *inode) {}
+static inline int sync_blockdev(struct block_device *bdev) { return 0; }
+static inline void invalidate_bdev(struct block_device *bdev) {}
+
+static inline struct super_block *freeze_bdev(struct block_device *sb)
+{
+ return NULL;
+}
+
+static inline int thaw_bdev(struct block_device *bdev, struct super_block *sb)
+{
+ return 0;
+}
#endif
extern const struct file_operations def_blk_fops;
extern const struct file_operations def_chr_fops;
diff --git a/include/linux/fs_struct.h b/include/linux/fs_struct.h
index 18b467dbe27..78a05bfcd8e 100644
--- a/include/linux/fs_struct.h
+++ b/include/linux/fs_struct.h
@@ -4,12 +4,10 @@
#include <linux/path.h>
struct fs_struct {
- atomic_t count; /* This usage count is used by check_unsafe_exec() for
- * security checking purposes - therefore it may not be
- * incremented, except by clone(CLONE_FS).
- */
+ int users;
rwlock_t lock;
int umask;
+ int in_exec;
struct path root, pwd;
};
@@ -19,6 +17,8 @@ extern void exit_fs(struct task_struct *);
extern void set_fs_root(struct fs_struct *, struct path *);
extern void set_fs_pwd(struct fs_struct *, struct path *);
extern struct fs_struct *copy_fs_struct(struct fs_struct *);
-extern void put_fs_struct(struct fs_struct *);
+extern void free_fs_struct(struct fs_struct *);
+extern void daemonize_fs_struct(void);
+extern int unshare_fs_struct(void);
#endif /* _LINUX_FS_STRUCT_H */
diff --git a/include/linux/hdreg.h b/include/linux/hdreg.h
index ed21bd3dbd2..29ee2873f4a 100644
--- a/include/linux/hdreg.h
+++ b/include/linux/hdreg.h
@@ -1,68 +1,6 @@
#ifndef _LINUX_HDREG_H
#define _LINUX_HDREG_H
-#ifdef __KERNEL__
-#include <linux/ata.h>
-
-/*
- * This file contains some defines for the AT-hd-controller.
- * Various sources.
- */
-
-/* ide.c has its own port definitions in "ide.h" */
-
-#define HD_IRQ 14
-
-/* Hd controller regs. Ref: IBM AT Bios-listing */
-#define HD_DATA 0x1f0 /* _CTL when writing */
-#define HD_ERROR 0x1f1 /* see err-bits */
-#define HD_NSECTOR 0x1f2 /* nr of sectors to read/write */
-#define HD_SECTOR 0x1f3 /* starting sector */
-#define HD_LCYL 0x1f4 /* starting cylinder */
-#define HD_HCYL 0x1f5 /* high byte of starting cyl */
-#define HD_CURRENT 0x1f6 /* 101dhhhh , d=drive, hhhh=head */
-#define HD_STATUS 0x1f7 /* see status-bits */
-#define HD_FEATURE HD_ERROR /* same io address, read=error, write=feature */
-#define HD_PRECOMP HD_FEATURE /* obsolete use of this port - predates IDE */
-#define HD_COMMAND HD_STATUS /* same io address, read=status, write=cmd */
-
-#define HD_CMD 0x3f6 /* used for resets */
-#define HD_ALTSTATUS 0x3f6 /* same as HD_STATUS but doesn't clear irq */
-
-/* remainder is shared between hd.c, ide.c, ide-cd.c, and the hdparm utility */
-
-/* Bits of HD_STATUS */
-#define ERR_STAT 0x01
-#define INDEX_STAT 0x02
-#define ECC_STAT 0x04 /* Corrected error */
-#define DRQ_STAT 0x08
-#define SEEK_STAT 0x10
-#define SRV_STAT 0x10
-#define WRERR_STAT 0x20
-#define READY_STAT 0x40
-#define BUSY_STAT 0x80
-
-/* Bits for HD_ERROR */
-#define MARK_ERR 0x01 /* Bad address mark */
-#define ILI_ERR 0x01 /* Illegal Length Indication (ATAPI) */
-#define TRK0_ERR 0x02 /* couldn't find track 0 */
-#define EOM_ERR 0x02 /* End Of Media (ATAPI) */
-#define ABRT_ERR 0x04 /* Command aborted */
-#define MCR_ERR 0x08 /* media change request */
-#define ID_ERR 0x10 /* ID field not found */
-#define MC_ERR 0x20 /* media changed */
-#define ECC_ERR 0x40 /* Uncorrectable ECC error */
-#define BBD_ERR 0x80 /* pre-EIDE meaning: block marked bad */
-#define ICRC_ERR 0x80 /* new meaning: CRC error during transfer */
-#define LFS_ERR 0xf0 /* Last Failed Sense (ATAPI) */
-
-/* Bits of HD_NSECTOR */
-#define CD 0x01
-#define IO 0x02
-#define REL 0x04
-#define TAG_MASK 0xf8
-#endif /* __KERNEL__ */
-
#include <linux/types.h>
/*
@@ -191,6 +129,7 @@ typedef struct hd_drive_hob_hdr {
#define TASKFILE_INVALID 0x7fff
#endif
+#ifndef __KERNEL__
/* ATA/ATAPI Commands pre T13 Spec */
#define WIN_NOP 0x00
/*
@@ -379,6 +318,7 @@ typedef struct hd_drive_hob_hdr {
#define SECURITY_ERASE_UNIT 0xBD
#define SECURITY_FREEZE_LOCK 0xBE
#define SECURITY_DISABLE_PASSWORD 0xBF
+#endif /* __KERNEL__ */
struct hd_geometry {
unsigned char heads;
@@ -448,6 +388,7 @@ enum {
#define __NEW_HD_DRIVE_ID
+#ifndef __KERNEL__
/*
* Structure returned by HDIO_GET_IDENTITY, as per ANSI NCITS ATA6 rev.1b spec.
*
@@ -699,6 +640,7 @@ struct hd_driveid {
* 7:0 Signature
*/
};
+#endif /* __KERNEL__ */
/*
* IDE "nice" flags. These are used on a per drive basis to determine
diff --git a/include/linux/highmem.h b/include/linux/highmem.h
index 7ff5c55f9b5..1fcb7126a01 100644
--- a/include/linux/highmem.h
+++ b/include/linux/highmem.h
@@ -19,8 +19,21 @@ static inline void flush_kernel_dcache_page(struct page *page)
}
#endif
-#ifdef CONFIG_HIGHMEM
+#include <asm/kmap_types.h>
+
+#if defined(CONFIG_DEBUG_HIGHMEM) && defined(CONFIG_TRACE_IRQFLAGS_SUPPORT)
+
+void debug_kmap_atomic(enum km_type type);
+
+#else
+static inline void debug_kmap_atomic(enum km_type type)
+{
+}
+
+#endif
+
+#ifdef CONFIG_HIGHMEM
#include <asm/highmem.h>
/* declarations for linux/mm/highmem.c */
@@ -44,8 +57,6 @@ static inline void *kmap(struct page *page)
#define kunmap(page) do { (void) (page); } while (0)
-#include <asm/kmap_types.h>
-
static inline void *kmap_atomic(struct page *page, enum km_type idx)
{
pagefault_disable();
@@ -187,16 +198,4 @@ static inline void copy_highpage(struct page *to, struct page *from)
kunmap_atomic(vto, KM_USER1);
}
-#if defined(CONFIG_DEBUG_HIGHMEM) && defined(CONFIG_TRACE_IRQFLAGS_SUPPORT)
-
-void debug_kmap_atomic(enum km_type type);
-
-#else
-
-static inline void debug_kmap_atomic(enum km_type type)
-{
-}
-
-#endif
-
#endif /* _LINUX_HIGHMEM_H */
diff --git a/include/linux/i2c/at24.h b/include/linux/i2c/at24.h
index f6edd522a92..8ace93024d6 100644
--- a/include/linux/i2c/at24.h
+++ b/include/linux/i2c/at24.h
@@ -2,6 +2,7 @@
#define _LINUX_AT24_H
#include <linux/types.h>
+#include <linux/memory.h>
/*
* As seen through Linux I2C, differences between the most common types of I2C
@@ -23,6 +24,9 @@ struct at24_platform_data {
#define AT24_FLAG_READONLY 0x40 /* sysfs-entry will be read-only */
#define AT24_FLAG_IRUGO 0x20 /* sysfs-entry will be world-readable */
#define AT24_FLAG_TAKE8ADDR 0x10 /* take always 8 addresses (24c00) */
+
+ void (*setup)(struct memory_accessor *, void *context);
+ void *context;
};
#endif /* _LINUX_AT24_H */
diff --git a/include/linux/idr.h b/include/linux/idr.h
index dd846df8cd3..e968db71e33 100644
--- a/include/linux/idr.h
+++ b/include/linux/idr.h
@@ -106,6 +106,7 @@ int idr_get_new(struct idr *idp, void *ptr, int *id);
int idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id);
int idr_for_each(struct idr *idp,
int (*fn)(int id, void *p, void *data), void *data);
+void *idr_get_next(struct idr *idp, int *nextid);
void *idr_replace(struct idr *idp, void *ptr, int id);
void idr_remove(struct idr *idp, int id);
void idr_remove_all(struct idr *idp);
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index e720b0da775..556d781e69f 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -242,6 +242,7 @@ extern struct ratelimit_state printk_ratelimit_state;
extern int printk_ratelimit(void);
extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
unsigned int interval_msec);
+void log_buf_kexec_setup(void);
#else
static inline int vprintk(const char *s, va_list args)
__attribute__ ((format (printf, 1, 0)));
@@ -253,6 +254,9 @@ static inline int printk_ratelimit(void) { return 0; }
static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies, \
unsigned int interval_msec) \
{ return false; }
+static inline void log_buf_kexec_setup(void)
+{
+}
#endif
extern int printk_needs_cpu(int cpu);
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index 5a58ea3e91e..da5a5a1f4cd 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -364,6 +364,23 @@ do { \
#endif /* CONFIG_LOCK_STAT */
+#ifdef CONFIG_LOCKDEP
+
+/*
+ * On lockdep we dont want the hand-coded irq-enable of
+ * _raw_*_lock_flags() code, because lockdep assumes
+ * that interrupts are not re-enabled during lock-acquire:
+ */
+#define LOCK_CONTENDED_FLAGS(_lock, try, lock, lockfl, flags) \
+ LOCK_CONTENDED((_lock), (try), (lock))
+
+#else /* CONFIG_LOCKDEP */
+
+#define LOCK_CONTENDED_FLAGS(_lock, try, lock, lockfl, flags) \
+ lockfl((_lock), (flags))
+
+#endif /* CONFIG_LOCKDEP */
+
#ifdef CONFIG_GENERIC_HARDIRQS
extern void early_init_irq_lock_class(void);
#else
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 326f45c8653..18146c980b6 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -88,9 +88,6 @@ extern void mem_cgroup_end_migration(struct mem_cgroup *mem,
/*
* For memory reclaim.
*/
-extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem);
-extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem);
-
extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem);
extern void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem,
int priority);
@@ -104,6 +101,8 @@ struct zone_reclaim_stat *mem_cgroup_get_reclaim_stat(struct mem_cgroup *memcg,
struct zone *zone);
struct zone_reclaim_stat*
mem_cgroup_get_reclaim_stat_from_page(struct page *page);
+extern void mem_cgroup_print_oom_info(struct mem_cgroup *memcg,
+ struct task_struct *p);
#ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
extern int do_swap_account;
@@ -209,16 +208,6 @@ static inline void mem_cgroup_end_migration(struct mem_cgroup *mem,
{
}
-static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem)
-{
- return 0;
-}
-
-static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem)
-{
- return 0;
-}
-
static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem)
{
return 0;
@@ -270,6 +259,11 @@ mem_cgroup_get_reclaim_stat_from_page(struct page *page)
return NULL;
}
+static inline void
+mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p)
+{
+}
+
#endif /* CONFIG_CGROUP_MEM_CONT */
#endif /* _LINUX_MEMCONTROL_H */
diff --git a/include/linux/memory.h b/include/linux/memory.h
index 3fdc10806d3..42767d1a62e 100644
--- a/include/linux/memory.h
+++ b/include/linux/memory.h
@@ -99,4 +99,15 @@ enum mem_add_context { BOOT, HOTPLUG };
#define hotplug_memory_notifier(fn, pri) do { } while (0)
#endif
+/*
+ * 'struct memory_accessor' is a generic interface to provide
+ * in-kernel access to persistent memory such as i2c or SPI EEPROMs
+ */
+struct memory_accessor {
+ ssize_t (*read)(struct memory_accessor *, char *buf, off_t offset,
+ size_t count);
+ ssize_t (*write)(struct memory_accessor *, const char *buf,
+ off_t offset, size_t count);
+};
+
#endif /* _LINUX_MEMORY_H_ */
diff --git a/include/linux/mm.h b/include/linux/mm.h
index aeabe953ba4..bff1f0d475c 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1079,7 +1079,7 @@ static inline void setup_per_cpu_pageset(void) {}
#endif
/* nommu.c */
-extern atomic_t mmap_pages_allocated;
+extern atomic_long_t mmap_pages_allocated;
/* prio_tree.c */
void vma_prio_tree_add(struct vm_area_struct *, struct vm_area_struct *old);
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index ddadb4defe0..0e80e26ecf2 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -95,6 +95,9 @@ struct page {
void *virtual; /* Kernel virtual address (NULL if
not kmapped, ie. highmem) */
#endif /* WANT_PAGE_VIRTUAL */
+#ifdef CONFIG_WANT_PAGE_DEBUG_FLAGS
+ unsigned long debug_flags; /* Use atomic bitops on this */
+#endif
};
/*
@@ -175,9 +178,6 @@ struct vm_area_struct {
#ifdef CONFIG_NUMA
struct mempolicy *vm_policy; /* NUMA policy for the VMA */
#endif
-#ifdef CONFIG_WANT_PAGE_DEBUG_FLAGS
- unsigned long debug_flags; /* Use atomic bitops on this */
-#endif
};
struct core_thread {
diff --git a/include/linux/mnt_namespace.h b/include/linux/mnt_namespace.h
index 830bbcd449d..3a059298cc1 100644
--- a/include/linux/mnt_namespace.h
+++ b/include/linux/mnt_namespace.h
@@ -22,6 +22,8 @@ struct proc_mounts {
int event;
};
+struct fs_struct;
+
extern struct mnt_namespace *copy_mnt_ns(unsigned long, struct mnt_namespace *,
struct fs_struct *);
extern void __put_mnt_ns(struct mnt_namespace *ns);
diff --git a/include/linux/mpage.h b/include/linux/mpage.h
index 5c42821da2d..068a0c9946a 100644
--- a/include/linux/mpage.h
+++ b/include/linux/mpage.h
@@ -11,21 +11,11 @@
*/
#ifdef CONFIG_BLOCK
-struct mpage_data {
- struct bio *bio;
- sector_t last_block_in_bio;
- get_block_t *get_block;
- unsigned use_writepage;
-};
-
struct writeback_control;
-struct bio *mpage_bio_submit(int rw, struct bio *bio);
int mpage_readpages(struct address_space *mapping, struct list_head *pages,
unsigned nr_pages, get_block_t get_block);
int mpage_readpage(struct page *page, get_block_t get_block);
-int __mpage_writepage(struct page *page, struct writeback_control *wbc,
- void *data);
int mpage_writepages(struct address_space *mapping,
struct writeback_control *wbc, get_block_t get_block);
int mpage_writepage(struct page *page, get_block_t *get_block,
diff --git a/include/linux/nsproxy.h b/include/linux/nsproxy.h
index afad7dec1b3..7b370c7cfef 100644
--- a/include/linux/nsproxy.h
+++ b/include/linux/nsproxy.h
@@ -8,6 +8,7 @@ struct mnt_namespace;
struct uts_namespace;
struct ipc_namespace;
struct pid_namespace;
+struct fs_struct;
/*
* A structure to contain pointers to all per-process
diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h
index 602cc1fdee9..7339c7bf733 100644
--- a/include/linux/page_cgroup.h
+++ b/include/linux/page_cgroup.h
@@ -91,24 +91,23 @@ static inline void page_cgroup_init(void)
#ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
#include <linux/swap.h>
-extern struct mem_cgroup *
-swap_cgroup_record(swp_entry_t ent, struct mem_cgroup *mem);
-extern struct mem_cgroup *lookup_swap_cgroup(swp_entry_t ent);
+extern unsigned short swap_cgroup_record(swp_entry_t ent, unsigned short id);
+extern unsigned short lookup_swap_cgroup(swp_entry_t ent);
extern int swap_cgroup_swapon(int type, unsigned long max_pages);
extern void swap_cgroup_swapoff(int type);
#else
#include <linux/swap.h>
static inline
-struct mem_cgroup *swap_cgroup_record(swp_entry_t ent, struct mem_cgroup *mem)
+unsigned short swap_cgroup_record(swp_entry_t ent, unsigned short id)
{
- return NULL;
+ return 0;
}
static inline
-struct mem_cgroup *lookup_swap_cgroup(swp_entry_t ent)
+unsigned short lookup_swap_cgroup(swp_entry_t ent)
{
- return NULL;
+ return 0;
}
static inline int
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 01ca0856caf..076a7dc67c2 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -18,9 +18,14 @@
* Bits in mapping->flags. The lower __GFP_BITS_SHIFT bits are the page
* allocation mode flags.
*/
-#define AS_EIO (__GFP_BITS_SHIFT + 0) /* IO error on async write */
-#define AS_ENOSPC (__GFP_BITS_SHIFT + 1) /* ENOSPC on async write */
-#define AS_MM_ALL_LOCKS (__GFP_BITS_SHIFT + 2) /* under mm_take_all_locks() */
+enum mapping_flags {
+ AS_EIO = __GFP_BITS_SHIFT + 0, /* IO error on async write */
+ AS_ENOSPC = __GFP_BITS_SHIFT + 1, /* ENOSPC on async write */
+ AS_MM_ALL_LOCKS = __GFP_BITS_SHIFT + 2, /* under mm_take_all_locks() */
+#ifdef CONFIG_UNEVICTABLE_LRU
+ AS_UNEVICTABLE = __GFP_BITS_SHIFT + 3, /* e.g., ramdisk, SHM_LOCK */
+#endif
+};
static inline void mapping_set_error(struct address_space *mapping, int error)
{
@@ -33,7 +38,6 @@ static inline void mapping_set_error(struct address_space *mapping, int error)
}
#ifdef CONFIG_UNEVICTABLE_LRU
-#define AS_UNEVICTABLE (__GFP_BITS_SHIFT + 2) /* e.g., ramdisk, SHM_LOCK */
static inline void mapping_set_unevictable(struct address_space *mapping)
{
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index cb14fd26083..170f8b1f22d 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -526,6 +526,7 @@
#define PCI_DEVICE_ID_AMD_OPUS_7443 0x7443
#define PCI_DEVICE_ID_AMD_VIPER_7443 0x7443
#define PCI_DEVICE_ID_AMD_OPUS_7445 0x7445
+#define PCI_DEVICE_ID_AMD_8111_PCI 0x7460
#define PCI_DEVICE_ID_AMD_8111_LPC 0x7468
#define PCI_DEVICE_ID_AMD_8111_IDE 0x7469
#define PCI_DEVICE_ID_AMD_8111_SMBUS2 0x746a
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index 98b93ca4db0..67c15653fc2 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -94,6 +94,7 @@ extern void ptrace_notify(int exit_code);
extern void __ptrace_link(struct task_struct *child,
struct task_struct *new_parent);
extern void __ptrace_unlink(struct task_struct *child);
+extern void exit_ptrace(struct task_struct *tracer);
extern void ptrace_fork(struct task_struct *task, unsigned long clone_flags);
#define PTRACE_MODE_READ 1
#define PTRACE_MODE_ATTACH 2
diff --git a/include/linux/raid/bitmap.h b/include/linux/raid/bitmap.h
deleted file mode 100644
index e98900671ca..00000000000
--- a/include/linux/raid/bitmap.h
+++ /dev/null
@@ -1,288 +0,0 @@
-/*
- * bitmap.h: Copyright (C) Peter T. Breuer (ptb@ot.uc3m.es) 2003
- *
- * additions: Copyright (C) 2003-2004, Paul Clements, SteelEye Technology, Inc.
- */
-#ifndef BITMAP_H
-#define BITMAP_H 1
-
-#define BITMAP_MAJOR_LO 3
-/* version 4 insists the bitmap is in little-endian order
- * with version 3, it is host-endian which is non-portable
- */
-#define BITMAP_MAJOR_HI 4
-#define BITMAP_MAJOR_HOSTENDIAN 3
-
-#define BITMAP_MINOR 39
-
-/*
- * in-memory bitmap:
- *
- * Use 16 bit block counters to track pending writes to each "chunk".
- * The 2 high order bits are special-purpose, the first is a flag indicating
- * whether a resync is needed. The second is a flag indicating whether a
- * resync is active.
- * This means that the counter is actually 14 bits:
- *
- * +--------+--------+------------------------------------------------+
- * | resync | resync | counter |
- * | needed | active | |
- * | (0-1) | (0-1) | (0-16383) |
- * +--------+--------+------------------------------------------------+
- *
- * The "resync needed" bit is set when:
- * a '1' bit is read from storage at startup.
- * a write request fails on some drives
- * a resync is aborted on a chunk with 'resync active' set
- * It is cleared (and resync-active set) when a resync starts across all drives
- * of the chunk.
- *
- *
- * The "resync active" bit is set when:
- * a resync is started on all drives, and resync_needed is set.
- * resync_needed will be cleared (as long as resync_active wasn't already set).
- * It is cleared when a resync completes.
- *
- * The counter counts pending write requests, plus the on-disk bit.
- * When the counter is '1' and the resync bits are clear, the on-disk
- * bit can be cleared aswell, thus setting the counter to 0.
- * When we set a bit, or in the counter (to start a write), if the fields is
- * 0, we first set the disk bit and set the counter to 1.
- *
- * If the counter is 0, the on-disk bit is clear and the stipe is clean
- * Anything that dirties the stipe pushes the counter to 2 (at least)
- * and sets the on-disk bit (lazily).
- * If a periodic sweep find the counter at 2, it is decremented to 1.
- * If the sweep find the counter at 1, the on-disk bit is cleared and the
- * counter goes to zero.
- *
- * Also, we'll hijack the "map" pointer itself and use it as two 16 bit block
- * counters as a fallback when "page" memory cannot be allocated:
- *
- * Normal case (page memory allocated):
- *
- * page pointer (32-bit)
- *
- * [ ] ------+
- * |
- * +-------> [ ][ ]..[ ] (4096 byte page == 2048 counters)
- * c1 c2 c2048
- *
- * Hijacked case (page memory allocation failed):
- *
- * hijacked page pointer (32-bit)
- *
- * [ ][ ] (no page memory allocated)
- * counter #1 (16-bit) counter #2 (16-bit)
- *
- */
-
-#ifdef __KERNEL__
-
-#define PAGE_BITS (PAGE_SIZE << 3)
-#define PAGE_BIT_SHIFT (PAGE_SHIFT + 3)
-
-typedef __u16 bitmap_counter_t;
-#define COUNTER_BITS 16
-#define COUNTER_BIT_SHIFT 4
-#define COUNTER_BYTE_RATIO (COUNTER_BITS / 8)
-#define COUNTER_BYTE_SHIFT (COUNTER_BIT_SHIFT - 3)
-
-#define NEEDED_MASK ((bitmap_counter_t) (1 << (COUNTER_BITS - 1)))
-#define RESYNC_MASK ((bitmap_counter_t) (1 << (COUNTER_BITS - 2)))
-#define COUNTER_MAX ((bitmap_counter_t) RESYNC_MASK - 1)
-#define NEEDED(x) (((bitmap_counter_t) x) & NEEDED_MASK)
-#define RESYNC(x) (((bitmap_counter_t) x) & RESYNC_MASK)
-#define COUNTER(x) (((bitmap_counter_t) x) & COUNTER_MAX)
-
-/* how many counters per page? */
-#define PAGE_COUNTER_RATIO (PAGE_BITS / COUNTER_BITS)
-/* same, except a shift value for more efficient bitops */
-#define PAGE_COUNTER_SHIFT (PAGE_BIT_SHIFT - COUNTER_BIT_SHIFT)
-/* same, except a mask value for more efficient bitops */
-#define PAGE_COUNTER_MASK (PAGE_COUNTER_RATIO - 1)
-
-#define BITMAP_BLOCK_SIZE 512
-#define BITMAP_BLOCK_SHIFT 9
-
-/* how many blocks per chunk? (this is variable) */
-#define CHUNK_BLOCK_RATIO(bitmap) ((bitmap)->chunksize >> BITMAP_BLOCK_SHIFT)
-#define CHUNK_BLOCK_SHIFT(bitmap) ((bitmap)->chunkshift - BITMAP_BLOCK_SHIFT)
-#define CHUNK_BLOCK_MASK(bitmap) (CHUNK_BLOCK_RATIO(bitmap) - 1)
-
-/* when hijacked, the counters and bits represent even larger "chunks" */
-/* there will be 1024 chunks represented by each counter in the page pointers */
-#define PAGEPTR_BLOCK_RATIO(bitmap) \
- (CHUNK_BLOCK_RATIO(bitmap) << PAGE_COUNTER_SHIFT >> 1)
-#define PAGEPTR_BLOCK_SHIFT(bitmap) \
- (CHUNK_BLOCK_SHIFT(bitmap) + PAGE_COUNTER_SHIFT - 1)
-#define PAGEPTR_BLOCK_MASK(bitmap) (PAGEPTR_BLOCK_RATIO(bitmap) - 1)
-
-/*
- * on-disk bitmap:
- *
- * Use one bit per "chunk" (block set). We do the disk I/O on the bitmap
- * file a page at a time. There's a superblock at the start of the file.
- */
-
-/* map chunks (bits) to file pages - offset by the size of the superblock */
-#define CHUNK_BIT_OFFSET(chunk) ((chunk) + (sizeof(bitmap_super_t) << 3))
-
-#endif
-
-/*
- * bitmap structures:
- */
-
-#define BITMAP_MAGIC 0x6d746962
-
-/* use these for bitmap->flags and bitmap->sb->state bit-fields */
-enum bitmap_state {
- BITMAP_STALE = 0x002, /* the bitmap file is out of date or had -EIO */
- BITMAP_WRITE_ERROR = 0x004, /* A write error has occurred */
- BITMAP_HOSTENDIAN = 0x8000,
-};
-
-/* the superblock at the front of the bitmap file -- little endian */
-typedef struct bitmap_super_s {
- __le32 magic; /* 0 BITMAP_MAGIC */
- __le32 version; /* 4 the bitmap major for now, could change... */
- __u8 uuid[16]; /* 8 128 bit uuid - must match md device uuid */
- __le64 events; /* 24 event counter for the bitmap (1)*/
- __le64 events_cleared;/*32 event counter when last bit cleared (2) */
- __le64 sync_size; /* 40 the size of the md device's sync range(3) */
- __le32 state; /* 48 bitmap state information */
- __le32 chunksize; /* 52 the bitmap chunk size in bytes */
- __le32 daemon_sleep; /* 56 seconds between disk flushes */
- __le32 write_behind; /* 60 number of outstanding write-behind writes */
-
- __u8 pad[256 - 64]; /* set to zero */
-} bitmap_super_t;
-
-/* notes:
- * (1) This event counter is updated before the eventcounter in the md superblock
- * When a bitmap is loaded, it is only accepted if this event counter is equal
- * to, or one greater than, the event counter in the superblock.
- * (2) This event counter is updated when the other one is *if*and*only*if* the
- * array is not degraded. As bits are not cleared when the array is degraded,
- * this represents the last time that any bits were cleared.
- * If a device is being added that has an event count with this value or
- * higher, it is accepted as conforming to the bitmap.
- * (3)This is the number of sectors represented by the bitmap, and is the range that
- * resync happens across. For raid1 and raid5/6 it is the size of individual
- * devices. For raid10 it is the size of the array.
- */
-
-#ifdef __KERNEL__
-
-/* the in-memory bitmap is represented by bitmap_pages */
-struct bitmap_page {
- /*
- * map points to the actual memory page
- */
- char *map;
- /*
- * in emergencies (when map cannot be alloced), hijack the map
- * pointer and use it as two counters itself
- */
- unsigned int hijacked:1;
- /*
- * count of dirty bits on the page
- */
- unsigned int count:31;
-};
-
-/* keep track of bitmap file pages that have pending writes on them */
-struct page_list {
- struct list_head list;
- struct page *page;
-};
-
-/* the main bitmap structure - one per mddev */
-struct bitmap {
- struct bitmap_page *bp;
- unsigned long pages; /* total number of pages in the bitmap */
- unsigned long missing_pages; /* number of pages not yet allocated */
-
- mddev_t *mddev; /* the md device that the bitmap is for */
-
- int counter_bits; /* how many bits per block counter */
-
- /* bitmap chunksize -- how much data does each bit represent? */
- unsigned long chunksize;
- unsigned long chunkshift; /* chunksize = 2^chunkshift (for bitops) */
- unsigned long chunks; /* total number of data chunks for the array */
-
- /* We hold a count on the chunk currently being synced, and drop
- * it when the last block is started. If the resync is aborted
- * midway, we need to be able to drop that count, so we remember
- * the counted chunk..
- */
- unsigned long syncchunk;
-
- __u64 events_cleared;
- int need_sync;
-
- /* bitmap spinlock */
- spinlock_t lock;
-
- long offset; /* offset from superblock if file is NULL */
- struct file *file; /* backing disk file */
- struct page *sb_page; /* cached copy of the bitmap file superblock */
- struct page **filemap; /* list of cache pages for the file */
- unsigned long *filemap_attr; /* attributes associated w/ filemap pages */
- unsigned long file_pages; /* number of pages in the file */
- int last_page_size; /* bytes in the last page */
-
- unsigned long flags;
-
- int allclean;
-
- unsigned long max_write_behind; /* write-behind mode */
- atomic_t behind_writes;
-
- /*
- * the bitmap daemon - periodically wakes up and sweeps the bitmap
- * file, cleaning up bits and flushing out pages to disk as necessary
- */
- unsigned long daemon_lastrun; /* jiffies of last run */
- unsigned long daemon_sleep; /* how many seconds between updates? */
- unsigned long last_end_sync; /* when we lasted called end_sync to
- * update bitmap with resync progress */
-
- atomic_t pending_writes; /* pending writes to the bitmap file */
- wait_queue_head_t write_wait;
- wait_queue_head_t overflow_wait;
-
-};
-
-/* the bitmap API */
-
-/* these are used only by md/bitmap */
-int bitmap_create(mddev_t *mddev);
-void bitmap_flush(mddev_t *mddev);
-void bitmap_destroy(mddev_t *mddev);
-
-void bitmap_print_sb(struct bitmap *bitmap);
-void bitmap_update_sb(struct bitmap *bitmap);
-
-int bitmap_setallbits(struct bitmap *bitmap);
-void bitmap_write_all(struct bitmap *bitmap);
-
-void bitmap_dirty_bits(struct bitmap *bitmap, unsigned long s, unsigned long e);
-
-/* these are exported */
-int bitmap_startwrite(struct bitmap *bitmap, sector_t offset,
- unsigned long sectors, int behind);
-void bitmap_endwrite(struct bitmap *bitmap, sector_t offset,
- unsigned long sectors, int success, int behind);
-int bitmap_start_sync(struct bitmap *bitmap, sector_t offset, int *blocks, int degraded);
-void bitmap_end_sync(struct bitmap *bitmap, sector_t offset, int *blocks, int aborted);
-void bitmap_close_sync(struct bitmap *bitmap);
-void bitmap_cond_end_sync(struct bitmap *bitmap, sector_t sector);
-
-void bitmap_unplug(struct bitmap *bitmap);
-void bitmap_daemon_work(struct bitmap *bitmap);
-#endif
-
-#endif
diff --git a/include/linux/raid/linear.h b/include/linux/raid/linear.h
deleted file mode 100644
index f38b9c586af..00000000000
--- a/include/linux/raid/linear.h
+++ /dev/null
@@ -1,31 +0,0 @@
-#ifndef _LINEAR_H
-#define _LINEAR_H
-
-#include <linux/raid/md.h>
-
-struct dev_info {
- mdk_rdev_t *rdev;
- sector_t num_sectors;
- sector_t start_sector;
-};
-
-typedef struct dev_info dev_info_t;
-
-struct linear_private_data
-{
- struct linear_private_data *prev; /* earlier version */
- dev_info_t **hash_table;
- sector_t spacing;
- sector_t array_sectors;
- int sector_shift; /* shift before dividing
- * by spacing
- */
- dev_info_t disks[0];
-};
-
-
-typedef struct linear_private_data linear_conf_t;
-
-#define mddev_to_conf(mddev) ((linear_conf_t *) mddev->private)
-
-#endif
diff --git a/include/linux/raid/md.h b/include/linux/raid/md.h
deleted file mode 100644
index 82bea14cae1..00000000000
--- a/include/linux/raid/md.h
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- md.h : Multiple Devices driver for Linux
- Copyright (C) 1996-98 Ingo Molnar, Gadi Oxman
- Copyright (C) 1994-96 Marc ZYNGIER
- <zyngier@ufr-info-p7.ibp.fr> or
- <maz@gloups.fdn.fr>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- You should have received a copy of the GNU General Public License
- (for example /usr/src/linux/COPYING); if not, write to the Free
- Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#ifndef _MD_H
-#define _MD_H
-
-#include <linux/blkdev.h>
-#include <linux/seq_file.h>
-
-/*
- * 'md_p.h' holds the 'physical' layout of RAID devices
- * 'md_u.h' holds the user <=> kernel API
- *
- * 'md_k.h' holds kernel internal definitions
- */
-
-#include <linux/raid/md_p.h>
-#include <linux/raid/md_u.h>
-#include <linux/raid/md_k.h>
-
-#ifdef CONFIG_MD
-
-/*
- * Different major versions are not compatible.
- * Different minor versions are only downward compatible.
- * Different patchlevel versions are downward and upward compatible.
- */
-#define MD_MAJOR_VERSION 0
-#define MD_MINOR_VERSION 90
-/*
- * MD_PATCHLEVEL_VERSION indicates kernel functionality.
- * >=1 means different superblock formats are selectable using SET_ARRAY_INFO
- * and major_version/minor_version accordingly
- * >=2 means that Internal bitmaps are supported by setting MD_SB_BITMAP_PRESENT
- * in the super status byte
- * >=3 means that bitmap superblock version 4 is supported, which uses
- * little-ending representation rather than host-endian
- */
-#define MD_PATCHLEVEL_VERSION 3
-
-extern int mdp_major;
-
-extern int register_md_personality(struct mdk_personality *p);
-extern int unregister_md_personality(struct mdk_personality *p);
-extern mdk_thread_t * md_register_thread(void (*run) (mddev_t *mddev),
- mddev_t *mddev, const char *name);
-extern void md_unregister_thread(mdk_thread_t *thread);
-extern void md_wakeup_thread(mdk_thread_t *thread);
-extern void md_check_recovery(mddev_t *mddev);
-extern void md_write_start(mddev_t *mddev, struct bio *bi);
-extern void md_write_end(mddev_t *mddev);
-extern void md_done_sync(mddev_t *mddev, int blocks, int ok);
-extern void md_error(mddev_t *mddev, mdk_rdev_t *rdev);
-
-extern void md_super_write(mddev_t *mddev, mdk_rdev_t *rdev,
- sector_t sector, int size, struct page *page);
-extern void md_super_wait(mddev_t *mddev);
-extern int sync_page_io(struct block_device *bdev, sector_t sector, int size,
- struct page *page, int rw);
-extern void md_do_sync(mddev_t *mddev);
-extern void md_new_event(mddev_t *mddev);
-extern int md_allow_write(mddev_t *mddev);
-extern void md_wait_for_blocked_rdev(mdk_rdev_t *rdev, mddev_t *mddev);
-
-#endif /* CONFIG_MD */
-#endif
-
diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h
deleted file mode 100644
index 9743e4dbc91..00000000000
--- a/include/linux/raid/md_k.h
+++ /dev/null
@@ -1,402 +0,0 @@
-/*
- md_k.h : kernel internal structure of the Linux MD driver
- Copyright (C) 1996-98 Ingo Molnar, Gadi Oxman
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- You should have received a copy of the GNU General Public License
- (for example /usr/src/linux/COPYING); if not, write to the Free
- Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#ifndef _MD_K_H
-#define _MD_K_H
-
-/* and dm-bio-list.h is not under include/linux because.... ??? */
-#include "../../../drivers/md/dm-bio-list.h"
-
-#ifdef CONFIG_BLOCK
-
-#define LEVEL_MULTIPATH (-4)
-#define LEVEL_LINEAR (-1)
-#define LEVEL_FAULTY (-5)
-
-/* we need a value for 'no level specified' and 0
- * means 'raid0', so we need something else. This is
- * for internal use only
- */
-#define LEVEL_NONE (-1000000)
-
-#define MaxSector (~(sector_t)0)
-
-typedef struct mddev_s mddev_t;
-typedef struct mdk_rdev_s mdk_rdev_t;
-
-/*
- * options passed in raidrun:
- */
-
-/* Currently this must fit in an 'int' */
-#define MAX_CHUNK_SIZE (1<<30)
-
-/*
- * MD's 'extended' device
- */
-struct mdk_rdev_s
-{
- struct list_head same_set; /* RAID devices within the same set */
-
- sector_t size; /* Device size (in blocks) */
- mddev_t *mddev; /* RAID array if running */
- long last_events; /* IO event timestamp */
-
- struct block_device *bdev; /* block device handle */
-
- struct page *sb_page;
- int sb_loaded;
- __u64 sb_events;
- sector_t data_offset; /* start of data in array */
- sector_t sb_start; /* offset of the super block (in 512byte sectors) */
- int sb_size; /* bytes in the superblock */
- int preferred_minor; /* autorun support */
-
- struct kobject kobj;
-
- /* A device can be in one of three states based on two flags:
- * Not working: faulty==1 in_sync==0
- * Fully working: faulty==0 in_sync==1
- * Working, but not
- * in sync with array
- * faulty==0 in_sync==0
- *
- * It can never have faulty==1, in_sync==1
- * This reduces the burden of testing multiple flags in many cases
- */
-
- unsigned long flags;
-#define Faulty 1 /* device is known to have a fault */
-#define In_sync 2 /* device is in_sync with rest of array */
-#define WriteMostly 4 /* Avoid reading if at all possible */
-#define BarriersNotsupp 5 /* BIO_RW_BARRIER is not supported */
-#define AllReserved 6 /* If whole device is reserved for
- * one array */
-#define AutoDetected 7 /* added by auto-detect */
-#define Blocked 8 /* An error occured on an externally
- * managed array, don't allow writes
- * until it is cleared */
-#define StateChanged 9 /* Faulty or Blocked has changed during
- * interrupt, so it needs to be
- * notified by the thread */
- wait_queue_head_t blocked_wait;
-
- int desc_nr; /* descriptor index in the superblock */
- int raid_disk; /* role of device in array */
- int saved_raid_disk; /* role that device used to have in the
- * array and could again if we did a partial
- * resync from the bitmap
- */
- sector_t recovery_offset;/* If this device has been partially
- * recovered, this is where we were
- * up to.
- */
-
- atomic_t nr_pending; /* number of pending requests.
- * only maintained for arrays that
- * support hot removal
- */
- atomic_t read_errors; /* number of consecutive read errors that
- * we have tried to ignore.
- */
- atomic_t corrected_errors; /* number of corrected read errors,
- * for reporting to userspace and storing
- * in superblock.
- */
- struct work_struct del_work; /* used for delayed sysfs removal */
-
- struct sysfs_dirent *sysfs_state; /* handle for 'state'
- * sysfs entry */
-};
-
-struct mddev_s
-{
- void *private;
- struct mdk_personality *pers;
- dev_t unit;
- int md_minor;
- struct list_head disks;
- unsigned long flags;
-#define MD_CHANGE_DEVS 0 /* Some device status has changed */
-#define MD_CHANGE_CLEAN 1 /* transition to or from 'clean' */
-#define MD_CHANGE_PENDING 2 /* superblock update in progress */
-
- int ro;
-
- struct gendisk *gendisk;
-
- struct kobject kobj;
- int hold_active;
-#define UNTIL_IOCTL 1
-#define UNTIL_STOP 2
-
- /* Superblock information */
- int major_version,
- minor_version,
- patch_version;
- int persistent;
- int external; /* metadata is
- * managed externally */
- char metadata_type[17]; /* externally set*/
- int chunk_size;
- time_t ctime, utime;
- int level, layout;
- char clevel[16];
- int raid_disks;
- int max_disks;
- sector_t size; /* used size of component devices */
- sector_t array_sectors; /* exported array size */
- __u64 events;
-
- char uuid[16];
-
- /* If the array is being reshaped, we need to record the
- * new shape and an indication of where we are up to.
- * This is written to the superblock.
- * If reshape_position is MaxSector, then no reshape is happening (yet).
- */
- sector_t reshape_position;
- int delta_disks, new_level, new_layout, new_chunk;
-
- struct mdk_thread_s *thread; /* management thread */
- struct mdk_thread_s *sync_thread; /* doing resync or reconstruct */
- sector_t curr_resync; /* last block scheduled */
- unsigned long resync_mark; /* a recent timestamp */
- sector_t resync_mark_cnt;/* blocks written at resync_mark */
- sector_t curr_mark_cnt; /* blocks scheduled now */
-
- sector_t resync_max_sectors; /* may be set by personality */
-
- sector_t resync_mismatches; /* count of sectors where
- * parity/replica mismatch found
- */
-
- /* allow user-space to request suspension of IO to regions of the array */
- sector_t suspend_lo;
- sector_t suspend_hi;
- /* if zero, use the system-wide default */
- int sync_speed_min;
- int sync_speed_max;
-
- /* resync even though the same disks are shared among md-devices */
- int parallel_resync;
-
- int ok_start_degraded;
- /* recovery/resync flags
- * NEEDED: we might need to start a resync/recover
- * RUNNING: a thread is running, or about to be started
- * SYNC: actually doing a resync, not a recovery
- * RECOVER: doing recovery, or need to try it.
- * INTR: resync needs to be aborted for some reason
- * DONE: thread is done and is waiting to be reaped
- * REQUEST: user-space has requested a sync (used with SYNC)
- * CHECK: user-space request for for check-only, no repair
- * RESHAPE: A reshape is happening
- *
- * If neither SYNC or RESHAPE are set, then it is a recovery.
- */
-#define MD_RECOVERY_RUNNING 0
-#define MD_RECOVERY_SYNC 1
-#define MD_RECOVERY_RECOVER 2
-#define MD_RECOVERY_INTR 3
-#define MD_RECOVERY_DONE 4
-#define MD_RECOVERY_NEEDED 5
-#define MD_RECOVERY_REQUESTED 6
-#define MD_RECOVERY_CHECK 7
-#define MD_RECOVERY_RESHAPE 8
-#define MD_RECOVERY_FROZEN 9
-
- unsigned long recovery;
- int recovery_disabled; /* if we detect that recovery
- * will always fail, set this
- * so we don't loop trying */
-
- int in_sync; /* know to not need resync */
- struct mutex reconfig_mutex;
- atomic_t active; /* general refcount */
- atomic_t openers; /* number of active opens */
-
- int changed; /* true if we might need to reread partition info */
- int degraded; /* whether md should consider
- * adding a spare
- */
- int barriers_work; /* initialised to true, cleared as soon
- * as a barrier request to slave
- * fails. Only supported
- */
- struct bio *biolist; /* bios that need to be retried
- * because BIO_RW_BARRIER is not supported
- */
-
- atomic_t recovery_active; /* blocks scheduled, but not written */
- wait_queue_head_t recovery_wait;
- sector_t recovery_cp;
- sector_t resync_min; /* user requested sync
- * starts here */
- sector_t resync_max; /* resync should pause
- * when it gets here */
-
- struct sysfs_dirent *sysfs_state; /* handle for 'array_state'
- * file in sysfs.
- */
- struct sysfs_dirent *sysfs_action; /* handle for 'sync_action' */
-
- struct work_struct del_work; /* used for delayed sysfs removal */
-
- spinlock_t write_lock;
- wait_queue_head_t sb_wait; /* for waiting on superblock updates */
- atomic_t pending_writes; /* number of active superblock writes */
-
- unsigned int safemode; /* if set, update "clean" superblock
- * when no writes pending.
- */
- unsigned int safemode_delay;
- struct timer_list safemode_timer;
- atomic_t writes_pending;
- struct request_queue *queue; /* for plugging ... */
-
- atomic_t write_behind; /* outstanding async IO */
- unsigned int max_write_behind; /* 0 = sync */
-
- struct bitmap *bitmap; /* the bitmap for the device */
- struct file *bitmap_file; /* the bitmap file */
- long bitmap_offset; /* offset from superblock of
- * start of bitmap. May be
- * negative, but not '0'
- */
- long default_bitmap_offset; /* this is the offset to use when
- * hot-adding a bitmap. It should
- * eventually be settable by sysfs.
- */
-
- struct list_head all_mddevs;
-};
-
-
-static inline void rdev_dec_pending(mdk_rdev_t *rdev, mddev_t *mddev)
-{
- int faulty = test_bit(Faulty, &rdev->flags);
- if (atomic_dec_and_test(&rdev->nr_pending) && faulty)
- set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
-}
-
-static inline void md_sync_acct(struct block_device *bdev, unsigned long nr_sectors)
-{
- atomic_add(nr_sectors, &bdev->bd_contains->bd_disk->sync_io);
-}
-
-struct mdk_personality
-{
- char *name;
- int level;
- struct list_head list;
- struct module *owner;
- int (*make_request)(struct request_queue *q, struct bio *bio);
- int (*run)(mddev_t *mddev);
- int (*stop)(mddev_t *mddev);
- void (*status)(struct seq_file *seq, mddev_t *mddev);
- /* error_handler must set ->faulty and clear ->in_sync
- * if appropriate, and should abort recovery if needed
- */
- void (*error_handler)(mddev_t *mddev, mdk_rdev_t *rdev);
- int (*hot_add_disk) (mddev_t *mddev, mdk_rdev_t *rdev);
- int (*hot_remove_disk) (mddev_t *mddev, int number);
- int (*spare_active) (mddev_t *mddev);
- sector_t (*sync_request)(mddev_t *mddev, sector_t sector_nr, int *skipped, int go_faster);
- int (*resize) (mddev_t *mddev, sector_t sectors);
- int (*check_reshape) (mddev_t *mddev);
- int (*start_reshape) (mddev_t *mddev);
- int (*reconfig) (mddev_t *mddev, int layout, int chunk_size);
- /* quiesce moves between quiescence states
- * 0 - fully active
- * 1 - no new requests allowed
- * others - reserved
- */
- void (*quiesce) (mddev_t *mddev, int state);
-};
-
-
-struct md_sysfs_entry {
- struct attribute attr;
- ssize_t (*show)(mddev_t *, char *);
- ssize_t (*store)(mddev_t *, const char *, size_t);
-};
-
-
-static inline char * mdname (mddev_t * mddev)
-{
- return mddev->gendisk ? mddev->gendisk->disk_name : "mdX";
-}
-
-/*
- * iterates through some rdev ringlist. It's safe to remove the
- * current 'rdev'. Dont touch 'tmp' though.
- */
-#define rdev_for_each_list(rdev, tmp, head) \
- list_for_each_entry_safe(rdev, tmp, head, same_set)
-
-/*
- * iterates through the 'same array disks' ringlist
- */
-#define rdev_for_each(rdev, tmp, mddev) \
- list_for_each_entry_safe(rdev, tmp, &((mddev)->disks), same_set)
-
-#define rdev_for_each_rcu(rdev, mddev) \
- list_for_each_entry_rcu(rdev, &((mddev)->disks), same_set)
-
-typedef struct mdk_thread_s {
- void (*run) (mddev_t *mddev);
- mddev_t *mddev;
- wait_queue_head_t wqueue;
- unsigned long flags;
- struct task_struct *tsk;
- unsigned long timeout;
-} mdk_thread_t;
-
-#define THREAD_WAKEUP 0
-
-#define __wait_event_lock_irq(wq, condition, lock, cmd) \
-do { \
- wait_queue_t __wait; \
- init_waitqueue_entry(&__wait, current); \
- \
- add_wait_queue(&wq, &__wait); \
- for (;;) { \
- set_current_state(TASK_UNINTERRUPTIBLE); \
- if (condition) \
- break; \
- spin_unlock_irq(&lock); \
- cmd; \
- schedule(); \
- spin_lock_irq(&lock); \
- } \
- current->state = TASK_RUNNING; \
- remove_wait_queue(&wq, &__wait); \
-} while (0)
-
-#define wait_event_lock_irq(wq, condition, lock, cmd) \
-do { \
- if (condition) \
- break; \
- __wait_event_lock_irq(wq, condition, lock, cmd); \
-} while (0)
-
-static inline void safe_put_page(struct page *p)
-{
- if (p) put_page(p);
-}
-
-#endif /* CONFIG_BLOCK */
-#endif
-
diff --git a/include/linux/raid/md_u.h b/include/linux/raid/md_u.h
index 7192035fc4b..fb1abb3367e 100644
--- a/include/linux/raid/md_u.h
+++ b/include/linux/raid/md_u.h
@@ -15,6 +15,24 @@
#ifndef _MD_U_H
#define _MD_U_H
+/*
+ * Different major versions are not compatible.
+ * Different minor versions are only downward compatible.
+ * Different patchlevel versions are downward and upward compatible.
+ */
+#define MD_MAJOR_VERSION 0
+#define MD_MINOR_VERSION 90
+/*
+ * MD_PATCHLEVEL_VERSION indicates kernel functionality.
+ * >=1 means different superblock formats are selectable using SET_ARRAY_INFO
+ * and major_version/minor_version accordingly
+ * >=2 means that Internal bitmaps are supported by setting MD_SB_BITMAP_PRESENT
+ * in the super status byte
+ * >=3 means that bitmap superblock version 4 is supported, which uses
+ * little-ending representation rather than host-endian
+ */
+#define MD_PATCHLEVEL_VERSION 3
+
/* ioctls */
/* status */
@@ -46,6 +64,12 @@
#define STOP_ARRAY_RO _IO (MD_MAJOR, 0x33)
#define RESTART_ARRAY_RW _IO (MD_MAJOR, 0x34)
+/* 63 partitions with the alternate major number (mdp) */
+#define MdpMinorShift 6
+#ifdef __KERNEL__
+extern int mdp_major;
+#endif
+
typedef struct mdu_version_s {
int major;
int minor;
@@ -85,6 +109,17 @@ typedef struct mdu_array_info_s {
} mdu_array_info_t;
+/* non-obvious values for 'level' */
+#define LEVEL_MULTIPATH (-4)
+#define LEVEL_LINEAR (-1)
+#define LEVEL_FAULTY (-5)
+
+/* we need a value for 'no level specified' and 0
+ * means 'raid0', so we need something else. This is
+ * for internal use only
+ */
+#define LEVEL_NONE (-1000000)
+
typedef struct mdu_disk_info_s {
/*
* configuration/status of one particular disk
diff --git a/include/linux/raid/multipath.h b/include/linux/raid/multipath.h
deleted file mode 100644
index 6f53fc177a4..00000000000
--- a/include/linux/raid/multipath.h
+++ /dev/null
@@ -1,42 +0,0 @@
-#ifndef _MULTIPATH_H
-#define _MULTIPATH_H
-
-#include <linux/raid/md.h>
-
-struct multipath_info {
- mdk_rdev_t *rdev;
-};
-
-struct multipath_private_data {
- mddev_t *mddev;
- struct multipath_info *multipaths;
- int raid_disks;
- int working_disks;
- spinlock_t device_lock;
- struct list_head retry_list;
-
- mempool_t *pool;
-};
-
-typedef struct multipath_private_data multipath_conf_t;
-
-/*
- * this is the only point in the RAID code where we violate
- * C type safety. mddev->private is an 'opaque' pointer.
- */
-#define mddev_to_conf(mddev) ((multipath_conf_t *) mddev->private)
-
-/*
- * this is our 'private' 'collective' MULTIPATH buffer head.
- * it contains information about what kind of IO operations were started
- * for this MULTIPATH operation, and about their status:
- */
-
-struct multipath_bh {
- mddev_t *mddev;
- struct bio *master_bio;
- struct bio bio;
- int path;
- struct list_head retry_list;
-};
-#endif
diff --git a/include/linux/raid/pq.h b/include/linux/raid/pq.h
new file mode 100644
index 00000000000..d92480f8285
--- /dev/null
+++ b/include/linux/raid/pq.h
@@ -0,0 +1,132 @@
+/* -*- linux-c -*- ------------------------------------------------------- *
+ *
+ * Copyright 2003 H. Peter Anvin - All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, Inc., 53 Temple Place Ste 330,
+ * Boston MA 02111-1307, USA; either version 2 of the License, or
+ * (at your option) any later version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+
+#ifndef LINUX_RAID_RAID6_H
+#define LINUX_RAID_RAID6_H
+
+#ifdef __KERNEL__
+
+/* Set to 1 to use kernel-wide empty_zero_page */
+#define RAID6_USE_EMPTY_ZERO_PAGE 0
+#include <linux/blkdev.h>
+
+/* We need a pre-zeroed page... if we don't want to use the kernel-provided
+ one define it here */
+#if RAID6_USE_EMPTY_ZERO_PAGE
+# define raid6_empty_zero_page empty_zero_page
+#else
+extern const char raid6_empty_zero_page[PAGE_SIZE];
+#endif
+
+#else /* ! __KERNEL__ */
+/* Used for testing in user space */
+
+#include <errno.h>
+#include <inttypes.h>
+#include <limits.h>
+#include <stddef.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+
+/* Not standard, but glibc defines it */
+#define BITS_PER_LONG __WORDSIZE
+
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+typedef uint64_t u64;
+
+#ifndef PAGE_SIZE
+# define PAGE_SIZE 4096
+#endif
+extern const char raid6_empty_zero_page[PAGE_SIZE];
+
+#define __init
+#define __exit
+#define __attribute_const__ __attribute__((const))
+#define noinline __attribute__((noinline))
+
+#define preempt_enable()
+#define preempt_disable()
+#define cpu_has_feature(x) 1
+#define enable_kernel_altivec()
+#define disable_kernel_altivec()
+
+#define EXPORT_SYMBOL(sym)
+#define MODULE_LICENSE(licence)
+#define subsys_initcall(x)
+#define module_exit(x)
+#endif /* __KERNEL__ */
+
+/* Routine choices */
+struct raid6_calls {
+ void (*gen_syndrome)(int, size_t, void **);
+ int (*valid)(void); /* Returns 1 if this routine set is usable */
+ const char *name; /* Name of this routine set */
+ int prefer; /* Has special performance attribute */
+};
+
+/* Selected algorithm */
+extern struct raid6_calls raid6_call;
+
+/* Algorithm list */
+extern const struct raid6_calls * const raid6_algos[];
+int raid6_select_algo(void);
+
+/* Return values from chk_syndrome */
+#define RAID6_OK 0
+#define RAID6_P_BAD 1
+#define RAID6_Q_BAD 2
+#define RAID6_PQ_BAD 3
+
+/* Galois field tables */
+extern const u8 raid6_gfmul[256][256] __attribute__((aligned(256)));
+extern const u8 raid6_gfexp[256] __attribute__((aligned(256)));
+extern const u8 raid6_gfinv[256] __attribute__((aligned(256)));
+extern const u8 raid6_gfexi[256] __attribute__((aligned(256)));
+
+/* Recovery routines */
+void raid6_2data_recov(int disks, size_t bytes, int faila, int failb,
+ void **ptrs);
+void raid6_datap_recov(int disks, size_t bytes, int faila, void **ptrs);
+void raid6_dual_recov(int disks, size_t bytes, int faila, int failb,
+ void **ptrs);
+
+/* Some definitions to allow code to be compiled for testing in userspace */
+#ifndef __KERNEL__
+
+# define jiffies raid6_jiffies()
+# define printk printf
+# define GFP_KERNEL 0
+# define __get_free_pages(x, y) ((unsigned long)mmap(NULL, PAGE_SIZE << (y), \
+ PROT_READ|PROT_WRITE, \
+ MAP_PRIVATE|MAP_ANONYMOUS,\
+ 0, 0))
+# define free_pages(x, y) munmap((void *)(x), (y)*PAGE_SIZE)
+
+static inline void cpu_relax(void)
+{
+ /* Nothing */
+}
+
+#undef HZ
+#define HZ 1000
+static inline uint32_t raid6_jiffies(void)
+{
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+ return tv.tv_sec*1000 + tv.tv_usec/1000;
+}
+
+#endif /* ! __KERNEL__ */
+
+#endif /* LINUX_RAID_RAID6_H */
diff --git a/include/linux/raid/raid0.h b/include/linux/raid/raid0.h
deleted file mode 100644
index fd42aa87c39..00000000000
--- a/include/linux/raid/raid0.h
+++ /dev/null
@@ -1,30 +0,0 @@
-#ifndef _RAID0_H
-#define _RAID0_H
-
-#include <linux/raid/md.h>
-
-struct strip_zone
-{
- sector_t zone_start; /* Zone offset in md_dev (in sectors) */
- sector_t dev_start; /* Zone offset in real dev (in sectors) */
- sector_t sectors; /* Zone size in sectors */
- int nb_dev; /* # of devices attached to the zone */
- mdk_rdev_t **dev; /* Devices attached to the zone */
-};
-
-struct raid0_private_data
-{
- struct strip_zone **hash_table; /* Table of indexes into strip_zone */
- struct strip_zone *strip_zone;
- mdk_rdev_t **devlist; /* lists of rdevs, pointed to by strip_zone->dev */
- int nr_strip_zones;
-
- sector_t spacing;
- int sector_shift; /* shift this before divide by spacing */
-};
-
-typedef struct raid0_private_data raid0_conf_t;
-
-#define mddev_to_conf(mddev) ((raid0_conf_t *) mddev->private)
-
-#endif
diff --git a/include/linux/raid/raid1.h b/include/linux/raid/raid1.h
deleted file mode 100644
index 0a9ba7c3302..00000000000
--- a/include/linux/raid/raid1.h
+++ /dev/null
@@ -1,134 +0,0 @@
-#ifndef _RAID1_H
-#define _RAID1_H
-
-#include <linux/raid/md.h>
-
-typedef struct mirror_info mirror_info_t;
-
-struct mirror_info {
- mdk_rdev_t *rdev;
- sector_t head_position;
-};
-
-/*
- * memory pools need a pointer to the mddev, so they can force an unplug
- * when memory is tight, and a count of the number of drives that the
- * pool was allocated for, so they know how much to allocate and free.
- * mddev->raid_disks cannot be used, as it can change while a pool is active
- * These two datums are stored in a kmalloced struct.
- */
-
-struct pool_info {
- mddev_t *mddev;
- int raid_disks;
-};
-
-
-typedef struct r1bio_s r1bio_t;
-
-struct r1_private_data_s {
- mddev_t *mddev;
- mirror_info_t *mirrors;
- int raid_disks;
- int last_used;
- sector_t next_seq_sect;
- spinlock_t device_lock;
-
- struct list_head retry_list;
- /* queue pending writes and submit them on unplug */
- struct bio_list pending_bio_list;
- /* queue of writes that have been unplugged */
- struct bio_list flushing_bio_list;
-
- /* for use when syncing mirrors: */
-
- spinlock_t resync_lock;
- int nr_pending;
- int nr_waiting;
- int nr_queued;
- int barrier;
- sector_t next_resync;
- int fullsync; /* set to 1 if a full sync is needed,
- * (fresh device added).
- * Cleared when a sync completes.
- */
-
- wait_queue_head_t wait_barrier;
-
- struct pool_info *poolinfo;
-
- struct page *tmppage;
-
- mempool_t *r1bio_pool;
- mempool_t *r1buf_pool;
-};
-
-typedef struct r1_private_data_s conf_t;
-
-/*
- * this is the only point in the RAID code where we violate
- * C type safety. mddev->private is an 'opaque' pointer.
- */
-#define mddev_to_conf(mddev) ((conf_t *) mddev->private)
-
-/*
- * this is our 'private' RAID1 bio.
- *
- * it contains information about what kind of IO operations were started
- * for this RAID1 operation, and about their status:
- */
-
-struct r1bio_s {
- atomic_t remaining; /* 'have we finished' count,
- * used from IRQ handlers
- */
- atomic_t behind_remaining; /* number of write-behind ios remaining
- * in this BehindIO request
- */
- sector_t sector;
- int sectors;
- unsigned long state;
- mddev_t *mddev;
- /*
- * original bio going to /dev/mdx
- */
- struct bio *master_bio;
- /*
- * if the IO is in READ direction, then this is where we read
- */
- int read_disk;
-
- struct list_head retry_list;
- struct bitmap_update *bitmap_update;
- /*
- * if the IO is in WRITE direction, then multiple bios are used.
- * We choose the number when they are allocated.
- */
- struct bio *bios[0];
- /* DO NOT PUT ANY NEW FIELDS HERE - bios array is contiguously alloced*/
-};
-
-/* when we get a read error on a read-only array, we redirect to another
- * device without failing the first device, or trying to over-write to
- * correct the read error. To keep track of bad blocks on a per-bio
- * level, we store IO_BLOCKED in the appropriate 'bios' pointer
- */
-#define IO_BLOCKED ((struct bio*)1)
-
-/* bits for r1bio.state */
-#define R1BIO_Uptodate 0
-#define R1BIO_IsSync 1
-#define R1BIO_Degraded 2
-#define R1BIO_BehindIO 3
-#define R1BIO_Barrier 4
-#define R1BIO_BarrierRetry 5
-/* For write-behind requests, we call bi_end_io when
- * the last non-write-behind device completes, providing
- * any write was successful. Otherwise we call when
- * any write-behind write succeeds, otherwise we call
- * with failure when last write completes (and all failed).
- * Record that bi_end_io was called with this flag...
- */
-#define R1BIO_Returned 6
-
-#endif
diff --git a/include/linux/raid/raid10.h b/include/linux/raid/raid10.h
deleted file mode 100644
index e9091cfeb28..00000000000
--- a/include/linux/raid/raid10.h
+++ /dev/null
@@ -1,123 +0,0 @@
-#ifndef _RAID10_H
-#define _RAID10_H
-
-#include <linux/raid/md.h>
-
-typedef struct mirror_info mirror_info_t;
-
-struct mirror_info {
- mdk_rdev_t *rdev;
- sector_t head_position;
-};
-
-typedef struct r10bio_s r10bio_t;
-
-struct r10_private_data_s {
- mddev_t *mddev;
- mirror_info_t *mirrors;
- int raid_disks;
- spinlock_t device_lock;
-
- /* geometry */
- int near_copies; /* number of copies layed out raid0 style */
- int far_copies; /* number of copies layed out
- * at large strides across drives
- */
- int far_offset; /* far_copies are offset by 1 stripe
- * instead of many
- */
- int copies; /* near_copies * far_copies.
- * must be <= raid_disks
- */
- sector_t stride; /* distance between far copies.
- * This is size / far_copies unless
- * far_offset, in which case it is
- * 1 stripe.
- */
-
- int chunk_shift; /* shift from chunks to sectors */
- sector_t chunk_mask;
-
- struct list_head retry_list;
- /* queue pending writes and submit them on unplug */
- struct bio_list pending_bio_list;
-
-
- spinlock_t resync_lock;
- int nr_pending;
- int nr_waiting;
- int nr_queued;
- int barrier;
- sector_t next_resync;
- int fullsync; /* set to 1 if a full sync is needed,
- * (fresh device added).
- * Cleared when a sync completes.
- */
-
- wait_queue_head_t wait_barrier;
-
- mempool_t *r10bio_pool;
- mempool_t *r10buf_pool;
- struct page *tmppage;
-};
-
-typedef struct r10_private_data_s conf_t;
-
-/*
- * this is the only point in the RAID code where we violate
- * C type safety. mddev->private is an 'opaque' pointer.
- */
-#define mddev_to_conf(mddev) ((conf_t *) mddev->private)
-
-/*
- * this is our 'private' RAID10 bio.
- *
- * it contains information about what kind of IO operations were started
- * for this RAID10 operation, and about their status:
- */
-
-struct r10bio_s {
- atomic_t remaining; /* 'have we finished' count,
- * used from IRQ handlers
- */
- sector_t sector; /* virtual sector number */
- int sectors;
- unsigned long state;
- mddev_t *mddev;
- /*
- * original bio going to /dev/mdx
- */
- struct bio *master_bio;
- /*
- * if the IO is in READ direction, then this is where we read
- */
- int read_slot;
-
- struct list_head retry_list;
- /*
- * if the IO is in WRITE direction, then multiple bios are used,
- * one for each copy.
- * When resyncing we also use one for each copy.
- * When reconstructing, we use 2 bios, one for read, one for write.
- * We choose the number when they are allocated.
- */
- struct {
- struct bio *bio;
- sector_t addr;
- int devnum;
- } devs[0];
-};
-
-/* when we get a read error on a read-only array, we redirect to another
- * device without failing the first device, or trying to over-write to
- * correct the read error. To keep track of bad blocks on a per-bio
- * level, we store IO_BLOCKED in the appropriate 'bios' pointer
- */
-#define IO_BLOCKED ((struct bio*)1)
-
-/* bits for r10bio.state */
-#define R10BIO_Uptodate 0
-#define R10BIO_IsSync 1
-#define R10BIO_IsRecover 2
-#define R10BIO_Degraded 3
-#endif
diff --git a/include/linux/raid/raid5.h b/include/linux/raid/raid5.h
deleted file mode 100644
index 3b267279245..00000000000
--- a/include/linux/raid/raid5.h
+++ /dev/null
@@ -1,402 +0,0 @@
-#ifndef _RAID5_H
-#define _RAID5_H
-
-#include <linux/raid/md.h>
-#include <linux/raid/xor.h>
-
-/*
- *
- * Each stripe contains one buffer per disc. Each buffer can be in
- * one of a number of states stored in "flags". Changes between
- * these states happen *almost* exclusively under a per-stripe
- * spinlock. Some very specific changes can happen in bi_end_io, and
- * these are not protected by the spin lock.
- *
- * The flag bits that are used to represent these states are:
- * R5_UPTODATE and R5_LOCKED
- *
- * State Empty == !UPTODATE, !LOCK
- * We have no data, and there is no active request
- * State Want == !UPTODATE, LOCK
- * A read request is being submitted for this block
- * State Dirty == UPTODATE, LOCK
- * Some new data is in this buffer, and it is being written out
- * State Clean == UPTODATE, !LOCK
- * We have valid data which is the same as on disc
- *
- * The possible state transitions are:
- *
- * Empty -> Want - on read or write to get old data for parity calc
- * Empty -> Dirty - on compute_parity to satisfy write/sync request.(RECONSTRUCT_WRITE)
- * Empty -> Clean - on compute_block when computing a block for failed drive
- * Want -> Empty - on failed read
- * Want -> Clean - on successful completion of read request
- * Dirty -> Clean - on successful completion of write request
- * Dirty -> Clean - on failed write
- * Clean -> Dirty - on compute_parity to satisfy write/sync (RECONSTRUCT or RMW)
- *
- * The Want->Empty, Want->Clean, Dirty->Clean, transitions
- * all happen in b_end_io at interrupt time.
- * Each sets the Uptodate bit before releasing the Lock bit.
- * This leaves one multi-stage transition:
- * Want->Dirty->Clean
- * This is safe because thinking that a Clean buffer is actually dirty
- * will at worst delay some action, and the stripe will be scheduled
- * for attention after the transition is complete.
- *
- * There is one possibility that is not covered by these states. That
- * is if one drive has failed and there is a spare being rebuilt. We
- * can't distinguish between a clean block that has been generated
- * from parity calculations, and a clean block that has been
- * successfully written to the spare ( or to parity when resyncing).
- * To distingush these states we have a stripe bit STRIPE_INSYNC that
- * is set whenever a write is scheduled to the spare, or to the parity
- * disc if there is no spare. A sync request clears this bit, and
- * when we find it set with no buffers locked, we know the sync is
- * complete.
- *
- * Buffers for the md device that arrive via make_request are attached
- * to the appropriate stripe in one of two lists linked on b_reqnext.
- * One list (bh_read) for read requests, one (bh_write) for write.
- * There should never be more than one buffer on the two lists
- * together, but we are not guaranteed of that so we allow for more.
- *
- * If a buffer is on the read list when the associated cache buffer is
- * Uptodate, the data is copied into the read buffer and it's b_end_io
- * routine is called. This may happen in the end_request routine only
- * if the buffer has just successfully been read. end_request should
- * remove the buffers from the list and then set the Uptodate bit on
- * the buffer. Other threads may do this only if they first check
- * that the Uptodate bit is set. Once they have checked that they may
- * take buffers off the read queue.
- *
- * When a buffer on the write list is committed for write it is copied
- * into the cache buffer, which is then marked dirty, and moved onto a
- * third list, the written list (bh_written). Once both the parity
- * block and the cached buffer are successfully written, any buffer on
- * a written list can be returned with b_end_io.
- *
- * The write list and read list both act as fifos. The read list is
- * protected by the device_lock. The write and written lists are
- * protected by the stripe lock. The device_lock, which can be
- * claimed while the stipe lock is held, is only for list
- * manipulations and will only be held for a very short time. It can
- * be claimed from interrupts.
- *
- *
- * Stripes in the stripe cache can be on one of two lists (or on
- * neither). The "inactive_list" contains stripes which are not
- * currently being used for any request. They can freely be reused
- * for another stripe. The "handle_list" contains stripes that need
- * to be handled in some way. Both of these are fifo queues. Each
- * stripe is also (potentially) linked to a hash bucket in the hash
- * table so that it can be found by sector number. Stripes that are
- * not hashed must be on the inactive_list, and will normally be at
- * the front. All stripes start life this way.
- *
- * The inactive_list, handle_list and hash bucket lists are all protected by the
- * device_lock.
- * - stripes on the inactive_list never have their stripe_lock held.
- * - stripes have a reference counter. If count==0, they are on a list.
- * - If a stripe might need handling, STRIPE_HANDLE is set.
- * - When refcount reaches zero, then if STRIPE_HANDLE it is put on
- * handle_list else inactive_list
- *
- * This, combined with the fact that STRIPE_HANDLE is only ever
- * cleared while a stripe has a non-zero count means that if the
- * refcount is 0 and STRIPE_HANDLE is set, then it is on the
- * handle_list and if recount is 0 and STRIPE_HANDLE is not set, then
- * the stripe is on inactive_list.
- *
- * The possible transitions are:
- * activate an unhashed/inactive stripe (get_active_stripe())
- * lockdev check-hash unlink-stripe cnt++ clean-stripe hash-stripe unlockdev
- * activate a hashed, possibly active stripe (get_active_stripe())
- * lockdev check-hash if(!cnt++)unlink-stripe unlockdev
- * attach a request to an active stripe (add_stripe_bh())
- * lockdev attach-buffer unlockdev
- * handle a stripe (handle_stripe())
- * lockstripe clrSTRIPE_HANDLE ...
- * (lockdev check-buffers unlockdev) ..
- * change-state ..
- * record io/ops needed unlockstripe schedule io/ops
- * release an active stripe (release_stripe())
- * lockdev if (!--cnt) { if STRIPE_HANDLE, add to handle_list else add to inactive-list } unlockdev
- *
- * The refcount counts each thread that have activated the stripe,
- * plus raid5d if it is handling it, plus one for each active request
- * on a cached buffer, and plus one if the stripe is undergoing stripe
- * operations.
- *
- * Stripe operations are performed outside the stripe lock,
- * the stripe operations are:
- * -copying data between the stripe cache and user application buffers
- * -computing blocks to save a disk access, or to recover a missing block
- * -updating the parity on a write operation (reconstruct write and
- * read-modify-write)
- * -checking parity correctness
- * -running i/o to disk
- * These operations are carried out by raid5_run_ops which uses the async_tx
- * api to (optionally) offload operations to dedicated hardware engines.
- * When requesting an operation handle_stripe sets the pending bit for the
- * operation and increments the count. raid5_run_ops is then run whenever
- * the count is non-zero.
- * There are some critical dependencies between the operations that prevent some
- * from being requested while another is in flight.
- * 1/ Parity check operations destroy the in cache version of the parity block,
- * so we prevent parity dependent operations like writes and compute_blocks
- * from starting while a check is in progress. Some dma engines can perform
- * the check without damaging the parity block, in these cases the parity
- * block is re-marked up to date (assuming the check was successful) and is
- * not re-read from disk.
- * 2/ When a write operation is requested we immediately lock the affected
- * blocks, and mark them as not up to date. This causes new read requests
- * to be held off, as well as parity checks and compute block operations.
- * 3/ Once a compute block operation has been requested handle_stripe treats
- * that block as if it is up to date. raid5_run_ops guaruntees that any
- * operation that is dependent on the compute block result is initiated after
- * the compute block completes.
- */
-
-/*
- * Operations state - intermediate states that are visible outside of sh->lock
- * In general _idle indicates nothing is running, _run indicates a data
- * processing operation is active, and _result means the data processing result
- * is stable and can be acted upon. For simple operations like biofill and
- * compute that only have an _idle and _run state they are indicated with
- * sh->state flags (STRIPE_BIOFILL_RUN and STRIPE_COMPUTE_RUN)
- */
-/**
- * enum check_states - handles syncing / repairing a stripe
- * @check_state_idle - check operations are quiesced
- * @check_state_run - check operation is running
- * @check_state_result - set outside lock when check result is valid
- * @check_state_compute_run - check failed and we are repairing
- * @check_state_compute_result - set outside lock when compute result is valid
- */
-enum check_states {
- check_state_idle = 0,
- check_state_run, /* parity check */
- check_state_check_result,
- check_state_compute_run, /* parity repair */
- check_state_compute_result,
-};
-
-/**
- * enum reconstruct_states - handles writing or expanding a stripe
- */
-enum reconstruct_states {
- reconstruct_state_idle = 0,
- reconstruct_state_prexor_drain_run, /* prexor-write */
- reconstruct_state_drain_run, /* write */
- reconstruct_state_run, /* expand */
- reconstruct_state_prexor_drain_result,
- reconstruct_state_drain_result,
- reconstruct_state_result,
-};
-
-struct stripe_head {
- struct hlist_node hash;
- struct list_head lru; /* inactive_list or handle_list */
- struct raid5_private_data *raid_conf;
- sector_t sector; /* sector of this row */
- int pd_idx; /* parity disk index */
- unsigned long state; /* state flags */
- atomic_t count; /* nr of active thread/requests */
- spinlock_t lock;
- int bm_seq; /* sequence number for bitmap flushes */
- int disks; /* disks in stripe */
- enum check_states check_state;
- enum reconstruct_states reconstruct_state;
- /* stripe_operations
- * @target - STRIPE_OP_COMPUTE_BLK target
- */
- struct stripe_operations {
- int target;
- u32 zero_sum_result;
- } ops;
- struct r5dev {
- struct bio req;
- struct bio_vec vec;
- struct page *page;
- struct bio *toread, *read, *towrite, *written;
- sector_t sector; /* sector of this page */
- unsigned long flags;
- } dev[1]; /* allocated with extra space depending of RAID geometry */
-};
-
-/* stripe_head_state - collects and tracks the dynamic state of a stripe_head
- * for handle_stripe. It is only valid under spin_lock(sh->lock);
- */
-struct stripe_head_state {
- int syncing, expanding, expanded;
- int locked, uptodate, to_read, to_write, failed, written;
- int to_fill, compute, req_compute, non_overwrite;
- int failed_num;
- unsigned long ops_request;
-};
-
-/* r6_state - extra state data only relevant to r6 */
-struct r6_state {
- int p_failed, q_failed, qd_idx, failed_num[2];
-};
-
-/* Flags */
-#define R5_UPTODATE 0 /* page contains current data */
-#define R5_LOCKED 1 /* IO has been submitted on "req" */
-#define R5_OVERWRITE 2 /* towrite covers whole page */
-/* and some that are internal to handle_stripe */
-#define R5_Insync 3 /* rdev && rdev->in_sync at start */
-#define R5_Wantread 4 /* want to schedule a read */
-#define R5_Wantwrite 5
-#define R5_Overlap 7 /* There is a pending overlapping request on this block */
-#define R5_ReadError 8 /* seen a read error here recently */
-#define R5_ReWrite 9 /* have tried to over-write the readerror */
-
-#define R5_Expanded 10 /* This block now has post-expand data */
-#define R5_Wantcompute 11 /* compute_block in progress treat as
- * uptodate
- */
-#define R5_Wantfill 12 /* dev->toread contains a bio that needs
- * filling
- */
-#define R5_Wantdrain 13 /* dev->towrite needs to be drained */
-/*
- * Write method
- */
-#define RECONSTRUCT_WRITE 1
-#define READ_MODIFY_WRITE 2
-/* not a write method, but a compute_parity mode */
-#define CHECK_PARITY 3
-
-/*
- * Stripe state
- */
-#define STRIPE_HANDLE 2
-#define STRIPE_SYNCING 3
-#define STRIPE_INSYNC 4
-#define STRIPE_PREREAD_ACTIVE 5
-#define STRIPE_DELAYED 6
-#define STRIPE_DEGRADED 7
-#define STRIPE_BIT_DELAY 8
-#define STRIPE_EXPANDING 9
-#define STRIPE_EXPAND_SOURCE 10
-#define STRIPE_EXPAND_READY 11
-#define STRIPE_IO_STARTED 12 /* do not count towards 'bypass_count' */
-#define STRIPE_FULL_WRITE 13 /* all blocks are set to be overwritten */
-#define STRIPE_BIOFILL_RUN 14
-#define STRIPE_COMPUTE_RUN 15
-/*
- * Operation request flags
- */
-#define STRIPE_OP_BIOFILL 0
-#define STRIPE_OP_COMPUTE_BLK 1
-#define STRIPE_OP_PREXOR 2
-#define STRIPE_OP_BIODRAIN 3
-#define STRIPE_OP_POSTXOR 4
-#define STRIPE_OP_CHECK 5
-
-/*
- * Plugging:
- *
- * To improve write throughput, we need to delay the handling of some
- * stripes until there has been a chance that several write requests
- * for the one stripe have all been collected.
- * In particular, any write request that would require pre-reading
- * is put on a "delayed" queue until there are no stripes currently
- * in a pre-read phase. Further, if the "delayed" queue is empty when
- * a stripe is put on it then we "plug" the queue and do not process it
- * until an unplug call is made. (the unplug_io_fn() is called).
- *
- * When preread is initiated on a stripe, we set PREREAD_ACTIVE and add
- * it to the count of prereading stripes.
- * When write is initiated, or the stripe refcnt == 0 (just in case) we
- * clear the PREREAD_ACTIVE flag and decrement the count
- * Whenever the 'handle' queue is empty and the device is not plugged, we
- * move any strips from delayed to handle and clear the DELAYED flag and set
- * PREREAD_ACTIVE.
- * In stripe_handle, if we find pre-reading is necessary, we do it if
- * PREREAD_ACTIVE is set, else we set DELAYED which will send it to the delayed queue.
- * HANDLE gets cleared if stripe_handle leave nothing locked.
- */
-
-
-struct disk_info {
- mdk_rdev_t *rdev;
-};
-
-struct raid5_private_data {
- struct hlist_head *stripe_hashtbl;
- mddev_t *mddev;
- struct disk_info *spare;
- int chunk_size, level, algorithm;
- int max_degraded;
- int raid_disks;
- int max_nr_stripes;
-
- /* used during an expand */
- sector_t expand_progress; /* MaxSector when no expand happening */
- sector_t expand_lo; /* from here up to expand_progress it out-of-bounds
- * as we haven't flushed the metadata yet
- */
- int previous_raid_disks;
-
- struct list_head handle_list; /* stripes needing handling */
- struct list_head hold_list; /* preread ready stripes */
- struct list_head delayed_list; /* stripes that have plugged requests */
- struct list_head bitmap_list; /* stripes delaying awaiting bitmap update */
- struct bio *retry_read_aligned; /* currently retrying aligned bios */
- struct bio *retry_read_aligned_list; /* aligned bios retry list */
- atomic_t preread_active_stripes; /* stripes with scheduled io */
- atomic_t active_aligned_reads;
- atomic_t pending_full_writes; /* full write backlog */
- int bypass_count; /* bypassed prereads */
- int bypass_threshold; /* preread nice */
- struct list_head *last_hold; /* detect hold_list promotions */
-
- atomic_t reshape_stripes; /* stripes with pending writes for reshape */
- /* unfortunately we need two cache names as we temporarily have
- * two caches.
- */
- int active_name;
- char cache_name[2][20];
- struct kmem_cache *slab_cache; /* for allocating stripes */
-
- int seq_flush, seq_write;
- int quiesce;
-
- int fullsync; /* set to 1 if a full sync is needed,
- * (fresh device added).
- * Cleared when a sync completes.
- */
-
- struct page *spare_page; /* Used when checking P/Q in raid6 */
-
- /*
- * Free stripes pool
- */
- atomic_t active_stripes;
- struct list_head inactive_list;
- wait_queue_head_t wait_for_stripe;
- wait_queue_head_t wait_for_overlap;
- int inactive_blocked; /* release of inactive stripes blocked,
- * waiting for 25% to be free
- */
- int pool_size; /* number of disks in stripeheads in pool */
- spinlock_t device_lock;
- struct disk_info *disks;
-};
-
-typedef struct raid5_private_data raid5_conf_t;
-
-#define mddev_to_conf(mddev) ((raid5_conf_t *) mddev->private)
-
-/*
- * Our supported algorithms
- */
-#define ALGORITHM_LEFT_ASYMMETRIC 0
-#define ALGORITHM_RIGHT_ASYMMETRIC 1
-#define ALGORITHM_LEFT_SYMMETRIC 2
-#define ALGORITHM_RIGHT_SYMMETRIC 3
-
-#endif
diff --git a/include/linux/raid/xor.h b/include/linux/raid/xor.h
index 3e120587ead..5a210959e3f 100644
--- a/include/linux/raid/xor.h
+++ b/include/linux/raid/xor.h
@@ -1,8 +1,6 @@
#ifndef _XOR_H
#define _XOR_H
-#include <linux/raid/md.h>
-
#define MAX_XOR_BLOCKS 4
extern void xor_blocks(unsigned int count, unsigned int bytes,
diff --git a/include/linux/rtc-v3020.h b/include/linux/rtc-v3020.h
index bf74e63c98f..8ba646e610d 100644
--- a/include/linux/rtc-v3020.h
+++ b/include/linux/rtc-v3020.h
@@ -14,6 +14,12 @@
* is used depends on the board. */
struct v3020_platform_data {
int leftshift; /* (1<<(leftshift)) & readl() */
+
+ int use_gpio:1;
+ unsigned int gpio_cs;
+ unsigned int gpio_wr;
+ unsigned int gpio_rd;
+ unsigned int gpio_io;
};
#define V3020_STATUS_0 0x00
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 481fad3a9b4..9da5aa0771e 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -68,7 +68,7 @@ struct sched_param {
#include <linux/smp.h>
#include <linux/sem.h>
#include <linux/signal.h>
-#include <linux/fs_struct.h>
+#include <linux/path.h>
#include <linux/compiler.h>
#include <linux/completion.h>
#include <linux/pid.h>
@@ -97,6 +97,7 @@ struct futex_pi_state;
struct robust_list_head;
struct bio;
struct bts_tracer;
+struct fs_struct;
/*
* List of flags we want to share for kernel threads,
@@ -547,25 +548,8 @@ struct signal_struct {
struct list_head cpu_timers[3];
- /* job control IDs */
-
- /*
- * pgrp and session fields are deprecated.
- * use the task_session_Xnr and task_pgrp_Xnr routines below
- */
-
- union {
- pid_t pgrp __deprecated;
- pid_t __pgrp;
- };
-
struct pid *tty_old_pgrp;
- union {
- pid_t session __deprecated;
- pid_t __session;
- };
-
/* boolean value for session group leader */
int leader;
@@ -1469,16 +1453,6 @@ static inline int rt_task(struct task_struct *p)
return rt_prio(p->prio);
}
-static inline void set_task_session(struct task_struct *tsk, pid_t session)
-{
- tsk->signal->__session = session;
-}
-
-static inline void set_task_pgrp(struct task_struct *tsk, pid_t pgrp)
-{
- tsk->signal->__pgrp = pgrp;
-}
-
static inline struct pid *task_pid(struct task_struct *task)
{
return task->pids[PIDTYPE_PID].pid;
@@ -1489,6 +1463,11 @@ static inline struct pid *task_tgid(struct task_struct *task)
return task->group_leader->pids[PIDTYPE_PID].pid;
}
+/*
+ * Without tasklist or rcu lock it is not safe to dereference
+ * the result of task_pgrp/task_session even if task == current,
+ * we can race with another thread doing sys_setsid/sys_setpgid.
+ */
static inline struct pid *task_pgrp(struct task_struct *task)
{
return task->group_leader->pids[PIDTYPE_PGID].pid;
@@ -1514,17 +1493,23 @@ struct pid_namespace;
*
* see also pid_nr() etc in include/linux/pid.h
*/
+pid_t __task_pid_nr_ns(struct task_struct *task, enum pid_type type,
+ struct pid_namespace *ns);
static inline pid_t task_pid_nr(struct task_struct *tsk)
{
return tsk->pid;
}
-pid_t task_pid_nr_ns(struct task_struct *tsk, struct pid_namespace *ns);
+static inline pid_t task_pid_nr_ns(struct task_struct *tsk,
+ struct pid_namespace *ns)
+{
+ return __task_pid_nr_ns(tsk, PIDTYPE_PID, ns);
+}
static inline pid_t task_pid_vnr(struct task_struct *tsk)
{
- return pid_vnr(task_pid(tsk));
+ return __task_pid_nr_ns(tsk, PIDTYPE_PID, NULL);
}
@@ -1541,31 +1526,34 @@ static inline pid_t task_tgid_vnr(struct task_struct *tsk)
}
-static inline pid_t task_pgrp_nr(struct task_struct *tsk)
+static inline pid_t task_pgrp_nr_ns(struct task_struct *tsk,
+ struct pid_namespace *ns)
{
- return tsk->signal->__pgrp;
+ return __task_pid_nr_ns(tsk, PIDTYPE_PGID, ns);
}
-pid_t task_pgrp_nr_ns(struct task_struct *tsk, struct pid_namespace *ns);
-
static inline pid_t task_pgrp_vnr(struct task_struct *tsk)
{
- return pid_vnr(task_pgrp(tsk));
+ return __task_pid_nr_ns(tsk, PIDTYPE_PGID, NULL);
}
-static inline pid_t task_session_nr(struct task_struct *tsk)
+static inline pid_t task_session_nr_ns(struct task_struct *tsk,
+ struct pid_namespace *ns)
{
- return tsk->signal->__session;
+ return __task_pid_nr_ns(tsk, PIDTYPE_SID, ns);
}
-pid_t task_session_nr_ns(struct task_struct *tsk, struct pid_namespace *ns);
-
static inline pid_t task_session_vnr(struct task_struct *tsk)
{
- return pid_vnr(task_session(tsk));
+ return __task_pid_nr_ns(tsk, PIDTYPE_SID, NULL);
}
+/* obsolete, do not use */
+static inline pid_t task_pgrp_nr(struct task_struct *tsk)
+{
+ return task_pgrp_nr_ns(tsk, &init_pid_ns);
+}
/**
* pid_alive - check that a task structure is not stale
@@ -1975,7 +1963,8 @@ extern void mm_release(struct task_struct *, struct mm_struct *);
/* Allocate a new mm structure and copy contents from tsk->mm */
extern struct mm_struct *dup_mm(struct task_struct *tsk);
-extern int copy_thread(int, unsigned long, unsigned long, unsigned long, struct task_struct *, struct pt_regs *);
+extern int copy_thread(unsigned long, unsigned long, unsigned long,
+ struct task_struct *, struct pt_regs *);
extern void flush_thread(void);
extern void exit_thread(void);
@@ -2060,6 +2049,11 @@ static inline int thread_group_empty(struct task_struct *p)
#define delay_group_leader(p) \
(thread_group_leader(p) && !thread_group_empty(p))
+static inline int task_detached(struct task_struct *p)
+{
+ return p->exit_signal == -1;
+}
+
/*
* Protects ->fs, ->files, ->mm, ->group_info, ->comm, keyring
* subscriptions and synchronises with wait4(). Also used in procfs. Also
diff --git a/include/linux/spi/eeprom.h b/include/linux/spi/eeprom.h
index 1085212c446..306e7b1c69e 100644
--- a/include/linux/spi/eeprom.h
+++ b/include/linux/spi/eeprom.h
@@ -1,6 +1,8 @@
#ifndef __LINUX_SPI_EEPROM_H
#define __LINUX_SPI_EEPROM_H
+#include <linux/memory.h>
+
/*
* Put one of these structures in platform_data for SPI EEPROMS handled
* by the "at25" driver. On SPI, most EEPROMS understand the same core
@@ -17,6 +19,10 @@ struct spi_eeprom {
#define EE_ADDR2 0x0002 /* 16 bit addrs */
#define EE_ADDR3 0x0004 /* 24 bit addrs */
#define EE_READONLY 0x0008 /* disallow writes */
+
+ /* for exporting this chip's data to other kernel code */
+ void (*setup)(struct memory_accessor *mem, void *context);
+ void *context;
};
#endif /* __LINUX_SPI_EEPROM_H */
diff --git a/include/linux/spi/spi_gpio.h b/include/linux/spi/spi_gpio.h
index 0f01a0f1f40..ca6782ee4b9 100644
--- a/include/linux/spi/spi_gpio.h
+++ b/include/linux/spi/spi_gpio.h
@@ -25,10 +25,16 @@
* ...
* };
*
+ * If chipselect is not used (there's only one device on the bus), assign
+ * SPI_GPIO_NO_CHIPSELECT to the controller_data:
+ * .controller_data = (void *) SPI_GPIO_NO_CHIPSELECT;
+ *
* If the bitbanged bus is later switched to a "native" controller,
* that platform_device and controller_data should be removed.
*/
+#define SPI_GPIO_NO_CHIPSELECT ((unsigned long)-1l)
+
/**
* struct spi_gpio_platform_data - parameter for bitbanged SPI master
* @sck: number of the GPIO used for clock output
diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h
index a0c66a2e00a..252b245cfcf 100644
--- a/include/linux/spinlock.h
+++ b/include/linux/spinlock.h
@@ -153,9 +153,11 @@ do { \
extern int _raw_spin_trylock(spinlock_t *lock);
extern void _raw_spin_unlock(spinlock_t *lock);
extern void _raw_read_lock(rwlock_t *lock);
+#define _raw_read_lock_flags(lock, flags) _raw_read_lock(lock)
extern int _raw_read_trylock(rwlock_t *lock);
extern void _raw_read_unlock(rwlock_t *lock);
extern void _raw_write_lock(rwlock_t *lock);
+#define _raw_write_lock_flags(lock, flags) _raw_write_lock(lock)
extern int _raw_write_trylock(rwlock_t *lock);
extern void _raw_write_unlock(rwlock_t *lock);
#else
@@ -165,9 +167,13 @@ do { \
# define _raw_spin_trylock(lock) __raw_spin_trylock(&(lock)->raw_lock)
# define _raw_spin_unlock(lock) __raw_spin_unlock(&(lock)->raw_lock)
# define _raw_read_lock(rwlock) __raw_read_lock(&(rwlock)->raw_lock)
+# define _raw_read_lock_flags(lock, flags) \
+ __raw_read_lock_flags(&(lock)->raw_lock, *(flags))
# define _raw_read_trylock(rwlock) __raw_read_trylock(&(rwlock)->raw_lock)
# define _raw_read_unlock(rwlock) __raw_read_unlock(&(rwlock)->raw_lock)
# define _raw_write_lock(rwlock) __raw_write_lock(&(rwlock)->raw_lock)
+# define _raw_write_lock_flags(lock, flags) \
+ __raw_write_lock_flags(&(lock)->raw_lock, *(flags))
# define _raw_write_trylock(rwlock) __raw_write_trylock(&(rwlock)->raw_lock)
# define _raw_write_unlock(rwlock) __raw_write_unlock(&(rwlock)->raw_lock)
#endif
diff --git a/include/linux/synclink.h b/include/linux/synclink.h
index 99b8bdb17b2..0ff2779c44d 100644
--- a/include/linux/synclink.h
+++ b/include/linux/synclink.h
@@ -125,6 +125,7 @@
#define MGSL_MODE_MONOSYNC 3
#define MGSL_MODE_BISYNC 4
#define MGSL_MODE_RAW 6
+#define MGSL_MODE_BASE_CLOCK 7
#define MGSL_BUS_TYPE_ISA 1
#define MGSL_BUS_TYPE_EISA 2
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index f9f900cfd06..b299a82a05e 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -461,6 +461,10 @@ asmlinkage long sys_pread64(unsigned int fd, char __user *buf,
size_t count, loff_t pos);
asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf,
size_t count, loff_t pos);
+asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec,
+ unsigned long vlen, u32 pos_high, u32 pos_low);
+asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec,
+ unsigned long vlen, u32 pos_high, u32 pos_low);
asmlinkage long sys_getcwd(char __user *buf, unsigned long size);
asmlinkage long sys_mkdir(const char __user *pathname, int mode);
asmlinkage long sys_chdir(const char __user *filename);
diff --git a/include/linux/timeriomem-rng.h b/include/linux/timeriomem-rng.h
index dd253177f65..3e08a1c8683 100644
--- a/include/linux/timeriomem-rng.h
+++ b/include/linux/timeriomem-rng.h
@@ -14,7 +14,7 @@ struct timeriomem_rng_data {
struct completion completion;
unsigned int present:1;
- u32 __iomem *address;
+ void __iomem *address;
/* measures in usecs */
unsigned int period;
diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h
index 6186a789d6c..c7aa154f4bf 100644
--- a/include/linux/tracehook.h
+++ b/include/linux/tracehook.h
@@ -388,17 +388,14 @@ static inline void tracehook_signal_handler(int sig, siginfo_t *info,
* tracehook_consider_ignored_signal - suppress short-circuit of ignored signal
* @task: task receiving the signal
* @sig: signal number being sent
- * @handler: %SIG_IGN or %SIG_DFL
*
* Return zero iff tracing doesn't care to examine this ignored signal,
* so it can short-circuit normal delivery and never even get queued.
- * Either @handler is %SIG_DFL and @sig's default is ignore, or it's %SIG_IGN.
*
* Called with @task->sighand->siglock held.
*/
static inline int tracehook_consider_ignored_signal(struct task_struct *task,
- int sig,
- void __user *handler)
+ int sig)
{
return (task_ptrace(task) & PT_PTRACED) != 0;
}
@@ -407,19 +404,17 @@ static inline int tracehook_consider_ignored_signal(struct task_struct *task,
* tracehook_consider_fatal_signal - suppress special handling of fatal signal
* @task: task receiving the signal
* @sig: signal number being sent
- * @handler: %SIG_DFL or %SIG_IGN
*
* Return nonzero to prevent special handling of this termination signal.
- * Normally @handler is %SIG_DFL. It can be %SIG_IGN if @sig is ignored,
- * in which case force_sig() is about to reset it to %SIG_DFL.
+ * Normally handler for signal is %SIG_DFL. It can be %SIG_IGN if @sig is
+ * ignored, in which case force_sig() is about to reset it to %SIG_DFL.
* When this returns zero, this signal might cause a quick termination
* that does not give the debugger a chance to intercept the signal.
*
* Called with or without @task->sighand->siglock held.
*/
static inline int tracehook_consider_fatal_signal(struct task_struct *task,
- int sig,
- void __user *handler)
+ int sig)
{
return (task_ptrace(task) & PT_PTRACED) != 0;
}
@@ -507,7 +502,7 @@ static inline int tracehook_notify_jctl(int notify, int why)
static inline int tracehook_notify_death(struct task_struct *task,
void **death_cookie, int group_dead)
{
- if (task->exit_signal == -1)
+ if (task_detached(task))
return task->ptrace ? SIGCHLD : DEATH_REAP;
/*
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index 3cd51e579ab..13e1adf55c4 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -41,6 +41,11 @@ struct delayed_work {
struct timer_list timer;
};
+static inline struct delayed_work *to_delayed_work(struct work_struct *work)
+{
+ return container_of(work, struct delayed_work, work);
+}
+
struct execute_work {
struct work_struct work;
};
diff --git a/include/net/tcp.h b/include/net/tcp.h
index e54c76d7549..1b94b9bfe2d 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -616,21 +616,6 @@ static inline int tcp_skb_mss(const struct sk_buff *skb)
return skb_shinfo(skb)->gso_size;
}
-static inline void tcp_dec_pcount_approx_int(__u32 *count, const int decr)
-{
- if (*count) {
- *count -= decr;
- if ((int)*count < 0)
- *count = 0;
- }
-}
-
-static inline void tcp_dec_pcount_approx(__u32 *count,
- const struct sk_buff *skb)
-{
- tcp_dec_pcount_approx_int(count, tcp_skb_pcount(skb));
-}
-
/* Events passed to congestion control interface */
enum tcp_ca_event {
CA_EVENT_TX_START, /* first transmit when no packets in flight */