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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6:
security: unexport mmap_min_addr
SELinux: use SECINITSID_NETMSG instead of SECINITSID_UNLABELED for NetLabel
security: Protection for exploiting null dereference using mmap
SELinux: Use %lu for inode->i_no when printing avc
SELinux: allow preemption between transition permission checks
selinux: introduce schedule points in policydb_destroy()
selinux: add selinuxfs structure for object class discovery
selinux: change sel_make_dir() to specify inode counter.
selinux: rename sel_remove_bools() for more general usage.
selinux: add support for querying object classes and permissions from the running policy
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git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
[IA64] Support multiple CPUs going through OS_MCA
[IA64] silence GCC ia64 unused variable warnings
[IA64] prevent MCA when performing MMIO mmap to PCI config space
[IA64] add sn_register_pmi_handler oemcall
[IA64] Stop bit for brl instruction
[IA64] SN: Correct ROM resource length for BIOS copy
[IA64] Don't set psr.ic and psr.i simultaneously
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* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (34 commits)
PCI: Only build PCI syscalls on architectures that want them
PCI: limit pci_get_bus_and_slot to domain 0
PCI: hotplug: acpiphp: avoid acpiphp "cannot get bridge info" PCI hotplug failure
PCI: hotplug: acpiphp: remove hot plug parameter write to PCI host bridge
PCI: hotplug: acpiphp: fix slot poweroff problem on systems without _PS3
PCI: hotplug: pciehp: wait for 1 second after power off slot
PCI: pci_set_power_state(): check for PM capabilities earlier
PCI: cpci_hotplug: Convert to use the kthread API
PCI: add pci_try_set_mwi
PCI: pcie: remove SPIN_LOCK_UNLOCKED
PCI: ROUND_UP macro cleanup in drivers/pci
PCI: remove pci_dac_dma_... APIs
PCI: pci-x-pci-express-read-control-interfaces cleanups
PCI: Fix typo in include/linux/pci.h
PCI: pci_ids, remove double or more empty lines
PCI: pci_ids, add atheros and 3com_2 vendors
PCI: pci_ids, reorder some entries
PCI: i386: traps, change VENDOR to DEVICE
PCI: ATM: lanai, change VENDOR to DEVICE
PCI: Change all drivers to use pci_device->revision
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* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: (61 commits)
sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes
sysfs: make directory dentries and inodes reclaimable
sysfs: implement sysfs_get_dentry()
sysfs: move sysfs_drop_dentry() to dir.c and make it static
sysfs: restructure add/remove paths and fix inode update
sysfs: use sysfs_mutex to protect the sysfs_dirent tree
sysfs: consolidate sysfs spinlocks
sysfs: make kobj point to sysfs_dirent instead of dentry
sysfs: implement sysfs_find_dirent() and sysfs_get_dirent()
sysfs: implement SYSFS_FLAG_REMOVED flag
sysfs: rename sysfs_dirent->s_type to s_flags and make room for flags
sysfs: make sysfs_drop_dentry() access inodes using ilookup()
sysfs: Fix oops in sysfs_drop_dentry on x86_64
sysfs: use singly-linked list for sysfs_dirent tree
sysfs: slim down sysfs_dirent->s_active
sysfs: move s_active functions to fs/sysfs/dir.c
sysfs: fix root sysfs_dirent -> root dentry association
sysfs: use iget_locked() instead of new_inode()
sysfs: reorganize sysfs_new_indoe() and sysfs_create()
sysfs: fix parent refcounting during rename and move
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master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: (21 commits)
libata: remove irq_on from ata_bus_reset() and ata_std_postreset()
ata_piix: kill incorrect invalid map value warning
libata: add another Maxtor drive with broken NCQ to the list
[libata] sata_mv: Fix and clean up per-chip-generation tests
[libata] sata_mv: Convert to new exception handling (EH) infrastructure
[libata] sata_mv: minor bug fixes, enhancements, and cleanups (prep for new EH)
[libata] sata_mv: Minor cleanups and renaming, preparing for new EH & NCQ
libata-link: add PMP related ATA constants
libata-link: separate out ata_eh_handle_dev_fail()
pata_hpt3x3: fix DMA Kconfig option to actually have a hope of working
Add Hitachi HDS7250SASUN500G 0621KTAWSD to NCQ blacklist
pata_scc.c: Workaround for errata A308
libata: add FUJITSU MHV2080BH to NCQ blacklist
pata_hpt3x3: major reworking and testing
libata: clean up horkage handling
libata: quirk IOMEGA ZIP 250 ATAPI FLOPPY
libata: simplify PCI legacy SFF host handling
pata_mpc52xx: suspend/resume support
sata_promise: SATA hotplug support, take 2
pata_sis: FIFO whack
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master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (183 commits)
[TG3]: Update version to 3.78.
[TG3]: Add missing NVRAM strapping.
[TG3]: Enable auto MDI.
[TG3]: Fix the polarity bit.
[TG3]: Fix irq_sync race condition.
[NET_SCHED]: ematch: module autoloading
[TCP]: tcp probe wraparound handling and other changes
[RTNETLINK]: rtnl_link: allow specifying initial device address
[RTNETLINK]: rtnl_link API simplification
[VLAN]: Fix MAC address handling
[ETH]: Validate address in eth_mac_addr
[NET]: Fix races in net_rx_action vs netpoll.
[AF_UNIX]: Rewrite garbage collector, fixes race.
[NETFILTER]: {ip, nf}_conntrack_sctp: fix remotely triggerable NULL ptr dereference (CVE-2007-2876)
[NET]: Make all initialized struct seq_operations const.
[UDP]: Fix length check.
[IPV6]: Remove unneeded pointer idev from addrconf_cleanup().
[DECNET]: Another unnecessary net/tcp.h inclusion in net/dn.h
[IPV6]: Make IPV6_{RECV,2292}RTHDR boolean options.
[IPV6]: Do not send RH0 anymore.
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Fixed up trivial conflict in Documentation/feature-removal-schedule.txt
manually.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[MIPS] Rename PC speaker code
[MIPS] Don't use genrtc.
[MIPS] Remove unused time.c for swarm
[MIPS] Sparse: Use NULL for pointer
[MIPS] Fix a sparse warning in arch/mips/pci/pci.c
[MIPS] SMTC: Interrupt mask backstop hack
[MIPS] separate platform_device registration for VR41xx RTC
[MIPS] Separate platform_device registration for VR41xx GPIO
[MIPS] MIPSsim: Fix build.
[MIPS] separate platform_device registration for VR41xx serial interface
[MIPS] Include cacheflush.h in uncache.c
[MIPS] Cleanup tlbdebug.h
[MIPS] Change names of local variables to silence sparse (part 2)
[MIPS] Workaround for a sparse warning in include/asm-mips/io.h
[MIPS] RM: Use only phyiscal address for 82596 and 53c710
[MIPS] Hydrogen3: Remove remaining bits of code.
[MIPS] DEC: Fix modpost warning.
Revert "[MIPS] DEC: Fix modpost warning."
[MIPS] Fix resume for 64K page size on R4000 class processors.
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* master.kernel.org:/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: (30 commits)
Blackfin serial driver: supporting BF548-EZKIT serial port
Video Console: Blackfin doesnt support VGA console
Blackfin arch: Add peripheral io API to gpio header file
Blackfin arch: set up gpio interrupt IRQ_PJ9 for BF54x ATAPI PATA driver
Blackfin arch: add missing CONFIG_LARGE_ALLOCS when upstream merging
Blackfin arch: as pointed out by Robert P. J. Day, update the CPU_FREQ name to match current Kconfig
Blackfin arch: extract the entry point from the linked kernel
Blackfin arch: clean up some coding style issues
Blackfin arch: combine the common code of free_initrd_mem and free_initmem
Blackfin arch: Add Support for Peripheral PortMux and resouce allocation
Blackfin arch: use PAGE_SIZE when doing aligns rather than hardcoded values
Blackfin arch: fix bug set dma_address properly in dma_map_sg
Blackfin arch: Disable CACHELINE_ALIGNED_L1 for BF54x by default
Blackfin arch: Port the dm9000 driver to Blackfin by using the correct low-level io routines
Blackfin arch: There is no CDPRIO Bit in the EBIU_AMGCTL Register of BF54x arch
Blackfin arch: scrub dead code
Blackfin arch: Fix Warning add some defines in BF54x header file
Blackfin arch: add BF54x missing GPIO access functions
Blackfin arch: Some memory and code optimizations - Fix SYS_IRQS
Blackfin arch: Enable BF54x PIN/GPIO interrupts
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* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: (26 commits)
i2c-rpx: Remove
i2c-mpc: work around missing-9th-clock-pulse bug
i2c: New PMC MSP71xx TWI bus driver
i2c-savage4: Delete many unused defines
i2c/tsl2550: Speed up initialization
i2c: New bus driver for the TAOS evaluation modules
i2c-i801: Use the internal 32-byte buffer on ICH4+
i2c-i801: Various cleanups
i2c: Add support for the TSL2550
i2c-pxa: Support new-style I2C drivers
i2c-gpio: Make some internal functions static
i2c-gpio: Add support for new-style clients
i2c-iop3xx: Switch to static adapter numbering
i2c-sis5595: Resolve resource conflict with sis5595
matroxfb: Clean-up i2c header inclusions
i2c-nforce2: Add support for SMBus block transactions
i2c-mpc: Use i2c_add_numbered_adapter
i2c-mv64xxx: Use i2c_add_numbered_adapter
i2c-piix4: Add support for the ATI SB700
i2c: New DS1682 chip driver
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This removes the old i386 setup code. This is done as a separate patch
to avoid breaking git bisect as some of the i386 code was also used by
the old x86-64 code.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Add symbolic constants for the segment selectors/GDT slots used by
the setup code, for consistency with i386.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Make struct boot_params a real structure, and remove the handling of
some obsolete fields, in particular hd*_info, which was only used by
the ST-506 driver, and likely to be wrong for that driver on any
modern BIOS.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Make definitions for struct e820entry and struct e820map
consistent between i386 and x86-64.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Some Intel features are spread around in different CPUID leafs like 0x5,
0x6 and 0xA. Make this feature detection code common across i386 and
x86_64.
Display Intel Dynamic Acceleration feature in /proc/cpuinfo. This feature
will be enabled automatically by current acpi-cpufreq driver.
Refer to Intel Software Developer's Manual for more details about the feature.
Thanks to hpa (H Peter Anvin) for the making the actual code detecting the
scattered features data-driven.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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struct screen_info has unaligned members, it needs to be packed.
In the process, fix the naming of some of the members, which don't
belong in this structure but are part of it anyway.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Unify the handling of the CPU features vectors between i386 and x86-64.
This also adopts the collapsing of features which are required at
compile-time into constant tests from x86-64 to i386.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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include/asm-i386/boot.h incorrectly has the multiple include guards
as _LINUX_BOOT_H instead of _ASM_BOOT_H. Fix.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The only pseudo-legitimate MIPS user of genrtc was a systems that doesn't
have an RTC in hardware at all. At this point faking one is a little
pointless ...
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To support multiple TC microthreads acting as "CPUs" within a VPE,
VPE-wide interrupt mask bits must be specially manipulated during
interrupt handling. To support legacy drivers and interrupt controller
management code, SMTC has a "backstop" to track and if necessary restore
the interrupt mask. This has some performance impact on interrupt service
overhead. Disable it only if you know what you are doing.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Also include tlbdebug.h in dump_tlb.c and r3k_dump_tlb.c.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This patch is an workaround for these sparse warnings:
include2/asm/mmu_context.h:172:2: warning: symbol 'flags' shadows an earlier one
include2/asm/mmu_context.h:133:16: originally declared here
include2/asm/mmu_context.h:232:2: warning: symbol 'flags' shadows an earlier one
include2/asm/mmu_context.h:203:16: originally declared here
include2/asm/mmu_context.h:277:3: warning: symbol 'flags' shadows an earlier one
include2/asm/mmu_context.h:250:16: originally declared here
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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CKSEG1ADDR() returns unsigned int value on 32bit kernel. Cast it to
unsigned long to get rid of this warning:
include2/asm/io.h:215:12: warning: cast adds address space to expression (<asn:2>)
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This is a new I2C bus driver for the TAOS evaluation modules. Developped
and tested on the TAOS TSL2550 EVM.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Add the SMBus device ID for ATI SB700.
Signed-off-by: Henry Su <Henry.su@amd.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Let the drivers specify how many bytes they want to read with
i2c_smbus_read_i2c_block_data(). So far, the block count was
hard-coded to I2C_SMBUS_BLOCK_MAX (32), which did not make much sense.
Many driver authors complained about this before, and I believe it's
about time to fix it. Right now, authors have to do technically stupid
things, such as individual byte reads or full-fledged I2C messaging,
to work around the problem. We do not want to encourage that.
I even found that some bus drivers (e.g. i2c-amd8111) already
implemented I2C block read the "right" way, that is, they didn't
follow the old, broken standard. The fact that it was never noticed
before just shows how little i2c_smbus_read_i2c_block_data() was used,
which isn't that surprising given how broken its prototype was so far.
There are some obvious compatiblity considerations:
* This changes the i2c_smbus_read_i2c_block_data() prototype. Users
outside the kernel tree will notice at compilation time, and will
have to update their code.
* User-space has access to i2c_smbus_xfer() directly using i2c-dev, so
the changed expectations would affect tools such as i2cdump. In order
to preserve binary compatibility, we give I2C_SMBUS_I2C_BLOCK_DATA
a new numeric value, and define I2C_SMBUS_I2C_BLOCK_BROKEN with the
old numeric value. When i2c-dev receives a transaction with the
old value, it can convert it to the new format on the fly.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Kill a sparse warning by un-nesting two container_of() calls.
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Generate I2C kerneldoc; fix various glitches and add "context" sections to
that documentation. Most I2C and SMBus functions still have no kerneldoc.
Let me suggest providing kerneldoc for all the i2c_smbus_*() functions as
a small and mostly self-contained project for anyone so inclined. :)
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
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Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
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Signed-off-by: Bryan Wu <bryan.wu@analog.com>
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Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
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Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
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However there are similar things in the EBIU_DDRQUE Register
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
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Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
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Add a new security check on mmap operations to see if the user is attempting
to mmap to low area of the address space. The amount of space protected is
indicated by the new proc tunable /proc/sys/vm/mmap_min_addr and defaults to
0, preserving existing behavior.
This patch uses a new SELinux security class "memprotect." Policy already
contains a number of allow rules like a_t self:process * (unconfined_t being
one of them) which mean that putting this check in the process class (its
best current fit) would make it useless as all user processes, which we also
want to protect against, would be allowed. By taking the memprotect name of
the new class it will also make it possible for us to move some of the other
memory protect permissions out of 'process' and into the new class next time
we bump the policy version number (which I also think is a good future idea)
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
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Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The VLAN MAC address handling is broken in multiple ways. When the address
differs when setting it, the real device is put in promiscous mode twice,
but never taken out again. Additionally it doesn't resync when the real
device's address is changed and needlessly puts it in promiscous mode when
the vlan device is still down.
Fix by moving address handling to vlan_dev_open/vlan_dev_stop and properly
deal with address changes in the device notifier. Also switch to
dev_unicast_add (which needs the exact same handling).
Since the set_mac_address handler is identical to the generic ethernet one
with these changes, kill it and use ether_setup().
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Keep netpoll/poll_napi from messing with the poll_list.
Only net_rx_action is allowed to manipulate the list.
Signed-off-by: Olaf Kirch <olaf.kirch@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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sysfs binary attributes
Well, first of all, I don't want to change so many files either.
What I do:
Adding a new parameter "struct bin_attribute *" in the
.read/.write methods for the sysfs binary attributes.
In fact, only the four lines change in fs/sysfs/bin.c and
include/linux/sysfs.h do the real work.
But I have to update all the files that use binary attributes
to make them compatible with the new .read and .write methods.
I'm not sure if I missed any. :(
Why I do this:
For a sysfs attribute, we can get a pointer pointing to the
struct attribute in the .show/.store method,
while we can't do this for the binary attributes.
I don't know why this is different, but this does make it not
so handy to use the binary attributes as the regular ones.
So I think this patch is reasonable. :)
Who benefits from it:
The patch that exposes ACPI tables in sysfs
requires such an improvement.
All the table binary attributes share the same .read method.
Parameter "struct bin_attribute *" is used to get
the table signature and instance number which are used to
distinguish different ACPI table binary attributes.
Without this parameter, we need to offer different .read methods
for different ACPI table binary attributes.
This is impossible as there are various ACPI tables on different
platforms, and we don't know what they are until they are loaded.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch makes dentries and inodes for sysfs directories
reclaimable.
* sysfs_notify() is modified to walk sysfs_dirent tree instead of
dentry tree.
* sysfs_update_file() and sysfs_chmod_file() use sysfs_get_dentry() to
grab the victim dentry.
* sysfs_rename_dir() and sysfs_move_dir() grab all dentries using
sysfs_get_dentry() on startup.
* Dentries for all shadowed directories are pinned in memory to serve
as lookup start point.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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As kobj sysfs dentries and inodes are gonna be made reclaimable,
dentry can't be used as naming token for sysfs file/directory, replace
kobj->dentry with kobj->sd. The only external interface change is
shadow directory handling. All other changes are contained in kobj
and sysfs.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Implement SYSFS_FLAG_REMOVED flag which currently is used only to
improve sanity check in sysfs_deactivate(). The flag will be used to
make directory entries reclamiable.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Rename sysfs_dirent->s_type to s_flags, pack type into lower eight
bits and reserve the rest for flags. sysfs_type() can used to access
the type. All existing sd->s_type accesses are converted to use
sysfs_type(). While at it, type test is changed to equality test
instead of bit-and test where appropriate.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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devt_attr and uevent_attr are either allocated dynamically with or
embedded in device and class_device as they needed their owner field
set to the module implementing the driver. Now that sysfs implements
immediate disconnect and owner field removed from struct attribute,
there is no reason to do this. Remove these attributes from
[class_]device and use static attribute structures instead.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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sysfs is now completely out of driver/module lifetime game. After
deletion, a sysfs node doesn't access anything outside sysfs proper,
so there's no reason to hold onto the attribute owners. Note that
often the wrong modules were accounted for as owners leading to
accessing removed modules.
This patch kills now unnecessary attribute->owner. Note that with
this change, userland holding a sysfs node does not prevent the
backing module from being unloaded.
For more info regarding lifetime rule cleanup, please read the
following message.
http://article.gmane.org/gmane.linux.kernel/510293
(tweaked by Greg to not delete the field just yet, to make it easier to
merge things properly.)
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Add s_name to sysfs_dirent. This is to further reduce dependency to
the associated dentry. Name is copied for directories and symlinks
but not for attributes.
Where possible, name dereferences are converted to use sd->s_name.
sysfs_symlink->link_name and sysfs_get_name() are unused now and
removed.
This change allows symlink to be implemented using sysfs_dirent tree
proper, which is the last remaining dentry-dependent sysfs walk.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Implement idr based id allocator. ida is used the same way idr is
used but lacks id -> ptr translation and thus consumes much less
memory. struct ida_bitmap is attached as leaf nodes to idr tree which
is managed by the idr code. Each ida_bitmap is 128bytes long and
contains slightly less than a thousand slots.
ida is more aggressive with releasing extra resources acquired using
ida_pre_get(). After every successful id allocation, ida frees one
reserved idr_layer if possible. Reserved ida_bitmap is not freed
automatically but only one ida_bitmap is reserved and it's almost
always used right away. Under most circumstances, ida won't hold on
to memory for too long which isn't actively used.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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