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2006-10-17[PATCH] Fix IO error reporting on fsync()Jan Kara
When IO error happens on metadata buffer, buffer is freed from memory and later fsync() is called, filesystems like ext2 fail to report EIO. We solve the problem by introducing a pointer to associated address space into the buffer_head. When a buffer is removed from a list of metadata buffers associated with an address space, IO error is transferred from the buffer to the address space, so that fsync can later report it. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-17[PATCH] knfsd: Allow lockd to drop replies as appropriateNeilBrown
It is possible for the ->fopen callback from lockd into nfsd to find that an answer cannot be given straight away (an upcall is needed) and so the request has to be 'dropped', to be retried later. That error status is not currently propagated back. So: Change nlm_fopen to return nlm error codes (rather than a private protocol) and define a new nlm_drop_reply code. Cause nlm_drop_reply to cause the rpc request to get rpc_drop_reply when this error comes back. Cause svc_process to drop a request which returns a status of rpc_drop_reply. [akpm@osdl.org: fix warning storm] Cc: Marc Eshel <eshel@almaden.ibm.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-17[PATCH] document i_size_write locking rulesMiklos Szeredi
Unless someone reads the documentation for write_seqcount_{begin,end} it is not obvious, that i_size_write() needs locking. Especially, that lack of such locking can result in a system hang. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-17[PATCH] genirq: clean up irq-flow-type namingIngo Molnar
Introduce desc->name and eliminate the handle_irq_name() hack. Add set_irq_chip_and_handler_name() to set the flow type and name at once. Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Matthew Wilcox <willy@debian.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-17[PATCH] rename net_random to random32Stephen Hemminger
Make net_random() more widely available by calling it random32 akpm: hopefully this will permit the removal of carta_random32. That needs confirmation from Stephane - this code looks somewhat more computationally expensive, and has a different (ie: callee-stateful) interface. [akpm@osdl.org: lots of build fixes, cleanups] Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net> Cc: Stephane Eranian <eranian@hpl.hp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-16Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (25 commits) [Bluetooth] Use work queue to trigger URB submission [Bluetooth] Add locking for bt_proto array manipulation [Bluetooth] Check if DLC is still attached to the TTY [Bluetooth] Fix reference count when connection lookup fails [Bluetooth] Disconnect HID interrupt channel first [Bluetooth] Support concurrent connect requests [Bluetooth] Make use of virtual devices tree [Bluetooth] Handle return values from driver core functions [Bluetooth] Fix compat ioctl for BNEP, CMTP and HIDP [IPV6] sit: Add missing MODULE_LICENSE [IPV6]: Remove bogus WARN_ON in Proxy-NA handling. [IPv6] rules: Use RT6_LOOKUP_F_HAS_SADDR and fix source based selectors [XFRM]: Fix xfrm_state_num going negative. [NET]: reduce sizeof(struct inet_peer), cleanup, change in peer_check_expire() NetLabel: the CIPSOv4 passthrough mapping does not pass categories correctly NetLabel: better error handling involving mls_export_cat() NetLabel: only deref the CIPSOv4 standard map fields when using standard mapping [BRIDGE]: flush forwarding table when device carrier off [NETFILTER]: ctnetlink: Remove debugging messages [NETFILTER]: Update MAINTAINERS entry ...
2006-10-16[PATCH] FRV: Use the correct preemption primitives in kmap_atomic() and coDavid Howells
Use inc/dec_preempt_count() rather than preempt_enable/disable() and manually add in the compiler barriers that were provided by the latter. This makes FRV consistent with other archs. Furthermore, the compiler barrier effects are now there unconditionally - at least as far as preemption is concerned - because we don't want the compiler moving memory accesses out of the section of code in which the mapping is in force - in effect the kmap_atomic() must imply a LOCK-class barrier and the kunmap_atomic() must imply an UNLOCK-class barrier to the compiler. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-15[Bluetooth] Support concurrent connect requestsMarcel Holtmann
Most Bluetooth chips don't support concurrent connect requests, because this would involve a multiple baseband page with only one radio. In the case an upper layer like L2CAP requests a concurrent connect these chips return the error "Command Disallowed" for the second request. If this happens it the responsibility of the Bluetooth core to queue the request and try again after the previous connect attempt has been completed. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2006-10-15[NET]: reduce sizeof(struct inet_peer), cleanup, change in peer_check_expire()Eric Dumazet
1) shrink struct inet_peer on 64 bits platforms.
2006-10-15Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (28 commits) ACPI: check battery status on resume for un/plug events during sleep ACPICA: Fix incorrect handling of PCI Express Root Bridge _HID ACPI: asus_acpi: don't printk on writing garbage to proc files ACPI: asus_acpi: fix proc files parsing ACPI: SCI interrupt source override ACPI: fix printk format warnings ACPI: fix section for CPU init functions ACPI: update comments in motherboard.c ACPI: acpi_pci_link_set() can allocate with either GFP_ATOMIC or GFP_KERNEL ACPI: fix potential OOPS in power driver with CONFIG_ACPI_DEBUG ACPI: ibm_acpi: delete obsolete documentation ACPI: created a dedicated workqueue for notify() execution ACPI: Remove deferred execution from global lock acquire wakeup path MSI S270 Laptop support: backlight, wlan, bluetooth states ACPI: EC: export ec_transaction() for msi-laptop driver ACPI: EC: Simplify acpi_hw_low_level*() with inb()/outb(). ACPI: EC: Unify poll and interrupt gpe handlers ACPI: EC: Unify poll and interrupt mode transaction functions ACPI: EC: Remove unused variables and duplicated code ACPI: EC: Remove unnecessary delay added by previous transation patch. ...
2006-10-15Merge branch 'master' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb: V4L/DVB (4750): AGC command1/2 is board specific V4L/DVB (4748): Fixed oops for Nova-T USB2 V4L/DVB (4746): HM12 is YUV 4:2:0, not YUV 4:1:1 V4L/DVB (4744): The Samsung TCPN2121P30A does not have a tda9887 V4L/DVB (4743): Fix oops in VIDIOC_G_PARM V4L/DVB (4742): Drivers/media/video: handle sysfs errors V4L/DVB (4741): {ov511,stv680}: handle sysfs errors V4L/DVB (4740): Fixed an if-block to avoid floating with debug-messages V4L/DVB (4739): SECAM support for saa7113 into saa7115 V4L/DVB (4738): Bt8xx/dvb-bt8xx.c: check kmalloc() return value. V4L/DVB (4734): Tda826x: fix frontend selection for dvb_attach V4L/DVB (4733): Tda10086: fix frontend selection for dvb_attach V4L/DVB (4732): Fix spelling error in Kconfig help text for DVB_CORE_ATTACH V4L/DVB (4731a): Kconfig: restore pvrusb2 menu items V4L/DVB (4729): Fix VIDIOC_G_FMT for NTSC in cx25840. V4L/DVB (4727): Support status readout for saa713x based FM radio V4L/DVB (4725): Fix vivi compile on parisc V4L/DVB (4692): Add WinTV-HVR3000 DVB-T support
2006-10-15[PATCH] sun3_ioremap() prototypeAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-15[PATCH] gfp_t in netlabelAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-14Pull ec into test branchLen Brown
2006-10-14ACPI: consolidate functions in acpi ec driverLennart Poettering
Unify the following functions: acpi_ec_poll_read() acpi_ec_poll_write() acpi_ec_poll_query() acpi_ec_intr_read() acpi_ec_intr_write() acpi_ec_intr_query() into: acpi_ec_poll_transaction() acpi_ec_intr_transaction() These new functions take as arguments an ACPI EC command, a few bytes to write to the EC data register and a buffer for a few bytes to read from the EC data register. The old _read(), _write(), _query() are just special cases of these functions. Then unified the code in acpi_ec_poll_transaction() and acpi_ec_intr_transaction() a little more. Both functions are now just wrappers around the new acpi_ec_transaction_unlocked() function. The latter contains the EC access logic, the two original function now just do their special way of locking and call the the new function for the actual work. This saves a lot of very similar code. The primary reason for doing this, however, is that my driver for MSI 270 laptops needs to issue some non-standard EC commands in a safe way. Due to this I added a new exported function similar to ec_write()/ec_write() which is called ec_transaction() and is essentially just a wrapper around acpi_ec_{poll,intr}_transaction(). Signed-off-by: Lennart Poettering <mzxreary@0pointer.de> Acked-by: Luming Yu <luming.yu@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Len Brown <len.brown@intel.com>
2006-10-14ACPI: Processor native C-states using MWAITVenkatesh Pallipadi
Intel processors starting with the Core Duo support support processor native C-state using the MWAIT instruction. Refer: Intel Architecture Software Developer's Manual http://www.intel.com/design/Pentium4/manuals/253668.htm Platform firmware exports the support for Native C-state to OS using ACPI _PDC and _CST methods. Refer: Intel Processor Vendor-Specific ACPI: Interface Specification http://www.intel.com/technology/iapc/acpi/downloads/302223.htm With Processor Native C-state, we use 'MWAIT' instruction on the processor to enter different C-states (C1, C2, C3). We won't use the special IO ports to enter C-state and no SMM mode etc required to enter C-state. Overall this will mean better C-state support. One major advantage of using MWAIT for all C-states is, with this and "treat interrupt as break event" feature of MWAIT, we can now get accurate timing for the time spent in C1, C2, .. states. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Len Brown <len.brown@intel.com>
2006-10-14V4L/DVB (4746): HM12 is YUV 4:2:0, not YUV 4:1:1Hans Verkuil
Fix comment in videodev2.h Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-10-13[PATCH] m68knommu: sync syscalls with m68kGeert Uytterhoeven
m68knommu: sync syscalls with m68k Signed-Off-By: Geert Uytterhoeven <geert@linux-m68k.org> Signed-Off-By: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-12[VOYAGER] fix up ptregs removal messJames Bottomley
Apparently whoever converted voyager never actually checked that the patch would compile ... Remove as much of the pt_regs references as possible and move the remaining ones into line with what's in x86 generic. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-12[VOYAGER] fix up attribute packed specifiers in voyager.hJames Bottomley
The old style (attribute on each structure entry) never really worked. Move it to an attribute per structure Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-12Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: sh: SH-4A UBC support sh: interrupt exception handling rework sh: Default enable R7780RP IRQs. sh: Zero-out coherent buffer in consistent_alloc(). sh: Convert IPR-IRQ to IRQ chip. sh: Convert INTC2 IRQ handler to irq_chip. sh: Fix pr_debug statements for sh4 sh: Convert r7780rp IRQ handler to IRQ chip. sh: Updates for IRQ handler changes. sh: Kill off timer_ops get_frequency(). sh: First step at generic timeofday support.
2006-10-12Merge branch 'for-linus' of git://brick.kernel.dk/data/git/linux-2.6-blockLinus Torvalds
* 'for-linus' of git://brick.kernel.dk/data/git/linux-2.6-block: [PATCH] block layer: ioprio_best function fix [PATCH] ide-cd: fix breakage with internally queued commands [PATCH] block layer: elv_iosched_show should get elv_list_lock [PATCH] splice: fix pipe_to_file() ->prepare_write() error path [PATCH] block layer: elevator_find function cleanup [PATCH] elevator: elevator_type member not used
2006-10-12[PATCH] ide-cd: fix breakage with internally queued commandsJens Axboe
We still need to maintain a private PC style command, since it isn't completely unified with REQ_TYPE_BLOCK_PC yet. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2006-10-12[PATCH] elevator: elevator_type member not usedJens Axboe
elevator_type field in elevator_type structure is useless: it isn't used anywhere in kernel sources. Signed-off-by: Vasily Tarasov <vtaras@openvz.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2006-10-12[NET]: Introduce protocol-specific destructor for time-wait sockets.YOSHIFUJI Hideaki
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-11[SCTP]: Fix receive buffer accounting.Vlad Yasevich
When doing receiver buffer accounting, we always used skb->truesize. This is problematic when processing bundled DATA chunks because for every DATA chunk that could be small part of one large skb, we would charge the size of the entire skb. The new approach is to store the size of the DATA chunk we are accounting for in the sctp_ulpevent structure and use that stored value for accounting. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-11IPsec: correct semantics for SELinux policy matchingVenkat Yekkirala
Currently when an IPSec policy rule doesn't specify a security context, it is assumed to be "unlabeled" by SELinux, and so the IPSec policy rule fails to match to a flow that it would otherwise match to, unless one has explicitly added an SELinux policy rule allowing the flow to "polmatch" to the "unlabeled" IPSec policy rules. In the absence of such an explicitly added SELinux policy rule, the IPSec policy rule fails to match and so the packet(s) flow in clear text without the otherwise applicable xfrm(s) applied. The above SELinux behavior violates the SELinux security notion of "deny by default" which should actually translate to "encrypt by default" in the above case. This was first reported by Evgeniy Polyakov and the way James Morris was seeing the problem was when connecting via IPsec to a confined service on an SELinux box (vsftpd), which did not have the appropriate SELinux policy permissions to send packets via IPsec. With this patch applied, SELinux "polmatching" of flows Vs. IPSec policy rules will only come into play when there's a explicit context specified for the IPSec policy rule (which also means there's corresponding SELinux policy allowing appropriate domains/flows to polmatch to this context). Secondly, when a security module is loaded (in this case, SELinux), the security_xfrm_policy_lookup() hook can return errors other than access denied, such as -EINVAL. We were not handling that correctly, and in fact inverting the return logic and propagating a false "ok" back up to xfrm_lookup(), which then allowed packets to pass as if they were not associated with an xfrm policy. The solution for this is to first ensure that errno values are correctly propagated all the way back up through the various call chains from security_xfrm_policy_lookup(), and handled correctly. Then, flow_cache_lookup() is modified, so that if the policy resolver fails (typically a permission denied via the security module), the flow cache entry is killed rather than having a null policy assigned (which indicates that the packet can pass freely). This also forces any future lookups for the same flow to consult the security module (e.g. SELinux) for current security policy (rather than, say, caching the error on the flow cache entry). This patch: Fix the selinux side of things. This makes sure SELinux polmatching of flow contexts to IPSec policy rules comes into play only when an explicit context is associated with the IPSec policy rule. Also, this no longer defaults the context of a socket policy to the context of the socket since the "no explicit context" case is now handled properly. Signed-off-by: Venkat Yekkirala <vyekkirala@TrustedCS.com> Signed-off-by: James Morris <jmorris@namei.org>
2006-10-11IPsec: propagate security module errors up from flow_cache_lookupJames Morris
When a security module is loaded (in this case, SELinux), the security_xfrm_policy_lookup() hook can return an access denied permission (or other error). We were not handling that correctly, and in fact inverting the return logic and propagating a false "ok" back up to xfrm_lookup(), which then allowed packets to pass as if they were not associated with an xfrm policy. The way I was seeing the problem was when connecting via IPsec to a confined service on an SELinux box (vsftpd), which did not have the appropriate SELinux policy permissions to send packets via IPsec. The first SYNACK would be blocked, because of an uncached lookup via flow_cache_lookup(), which would fail to resolve an xfrm policy because the SELinux policy is checked at that point via the resolver. However, retransmitted SYNACKs would then find a cached flow entry when calling into flow_cache_lookup() with a null xfrm policy, which is interpreted by xfrm_lookup() as the packet not having any associated policy and similarly to the first case, allowing it to pass without transformation. The solution presented here is to first ensure that errno values are correctly propagated all the way back up through the various call chains from security_xfrm_policy_lookup(), and handled correctly. Then, flow_cache_lookup() is modified, so that if the policy resolver fails (typically a permission denied via the security module), the flow cache entry is killed rather than having a null policy assigned (which indicates that the packet can pass freely). This also forces any future lookups for the same flow to consult the security module (e.g. SELinux) for current security policy (rather than, say, caching the error on the flow cache entry). Signed-off-by: James Morris <jmorris@namei.org>
2006-10-11NetLabel: fix a cache race conditionpaul.moore@hp.com
Testing revealed a problem with the NetLabel cache where a cached entry could be freed while in use by the LSM layer causing an oops and other problems. This patch fixes that problem by introducing a reference counter to the cache entry so that it is only freed when it is no longer in use. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
2006-10-12sh: SH-4A UBC supportRyusuke Sakato
A simple patch to enable the UBC on SH-4A. Signed-off-by: Ryusuke Sakato <sakato@hsdv.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-10-11Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] Pass NULL not 0 for pointer value. [MIPS] IP27: Make declaration of setup_replication_mask a proper prototype. [MIPS] BigSur: More useful defconfig. [MIPS] Cleanup definitions of speed_t and tcflag_t. [MIPS] Fix compilation warnings in arch/mips/sibyte/bcm1480/smp.c [MIPS] Optimize and cleanup get_saved_sp, set_saved_sp [MIPS] <asm/irq.h> does not need pt_regs anymore. [MIPS] Workaround for bug in gcc -EB / -EL options. [MIPS] Fix timer setup for Jazz
2006-10-11[MIPS] Cleanup definitions of speed_t and tcflag_t.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-11[MIPS] Optimize and cleanup get_saved_sp, set_saved_spAtsushi Nemoto
If CONFIG_BUILD_ELF64 was not selected and gcc had -msym32 option (i.e. 4.0 or newer), there is no point to use %highest, %higher for kernel symbols. This patch also fixes 64-bit SMTC version of get_saved_sp() which is broken but harmless since there is no such CPUs for now. A bonus is set_saved_sp() and SMP version of get_saved_sp() are more readable now. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-11[MIPS] <asm/irq.h> does not need pt_regs anymore.Atsushi Nemoto
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-11Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [S390] stacktrace bug. [S390] cio: remove casts from/to (void *). [S390] cio: Remove grace period for vary off chpid. [S390] cio: Use ccw_dev_id and subchannel_id in ccw_device_private [S390] monwriter kzalloc size. [S390] cio: add missing KERN_INFO printk header. [S390] irq change improvements.
2006-10-11[PATCH] m68k uaccess __user annotationsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-11[PATCH] arm-versatile iomem annotationsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-11[PATCH] arm: use unsigned long instead of unsigned int in get_user()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-11[PATCH] VFS: Destroy the dentries contributed by a superblock on unmountingDavid Howells
The attached patch destroys all the dentries attached to a superblock in one go by: (1) Destroying the tree rooted at s_root. (2) Destroying every entry in the anon list, one at a time. (3) Each entry in the anon list has its subtree consumed from the leaves inwards. This reduces the amount of work generic_shutdown_super() does, and avoids iterating through the dentry_unused list. Note that locking is almost entirely absent in the shrink_dcache_for_umount*() functions added by this patch. This is because: (1) at the point the filesystem calls generic_shutdown_super(), it is not permitted to further touch the superblock's set of dentries, and nor may it remove aliases from inodes; (2) the dcache memory shrinker now skips dentries that are being unmounted; and (3) the superblock no longer has any external references through which the VFS can reach it. Given these points, the only locking we need to do is when we remove dentries from the unused list and the name hashes, which we do a directory's worth at a time. We also don't need to guard against reference counts going to zero unexpectedly and removing bits of the tree we're working on as nothing else can call dput(). A cut down version of dentry_iput() has been folded into shrink_dcache_for_umount_subtree() function. Apart from not needing to unlock things, it also doesn't need to check for inotify watches. In this version of the patch, the complaint about a dentry still being in use has been expanded from a single BUG_ON() and now gives much more information. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: NeilBrown <neilb@suse.de> Acked-by: Ian Kent <raven@themaw.net> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-11[PATCH] include linux/types.h in linux/nbd.hMike Frysinger
The nbd header uses __be32 and such types but doesn't actually include the header that defines these things (linux/types.h); so let's include it. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-11[PATCH] uaccess.h: match kernel-doc and function namesRandy Dunlap
Place kernel-doc function comment header immediately before the function that is being documented. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-11[PATCH] Consolidate check_signatureMatthew Wilcox
There's nothing arch-specific about check_signature(), so move it to <linux/io.h>. Use a cross between the Alpha and i386 implementations as the generic one. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-11[PATCH] bitmap: parse input from kernel and user buffersReinette Chatre
lib/bitmap.c:bitmap_parse() is a library function that received as input a user buffer. This seemed to have originated from the way the write_proc function of the /proc filesystem operates. This has been reworked to not use kmalloc and eliminates a lot of get_user() overhead by performing one access_ok before using __get_user(). We need to test if we are in kernel or user space (is_user) and access the buffer differently. We cannot use __get_user() to access kernel addresses in all cases, for example in architectures with separate address space for kernel and user. This function will be useful for other uses as well; for example, taking input for /sysfs instead of /proc, so it was changed to accept kernel buffers. We have this use for the Linux UWB project, as part as the upcoming bandwidth allocator code. Only a few routines used this function and they were changed too. Signed-off-by: Reinette Chatre <reinette.chatre@linux.intel.com> Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Cc: Paul Jackson <pj@sgi.com> Cc: Joe Korty <joe.korty@ccur.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-11[PATCH] 32-bit compatibility HDIO IOCTLsMaciej W. Rozycki
A couple of HDIO IOCTLs are not yet handled and a few others are marked as using a pointer rather than an unsigned long. The formers include: HDIO_GET_WCACHE, HDIO_GET_ACOUSTIC, HDIO_GET_ADDRESS and HDIO_GET_BUSSTATE. The latters are: HDIO_SET_MULTCOUNT, HDIO_SET_UNMASKINTR, HDIO_SET_KEEPSETTINGS, HDIO_SET_32BIT, HDIO_SET_NOWERR, HDIO_SET_DMA, HDIO_SET_PIO_MODE and HDIO_SET_NICE. Additionally 0x330 used to be HDIO_GETGEO_BIG and may be issued by 32-bit `hdparm' run on a 64-bit kernel making Linux complain loudly. This is a fix for these issues. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-11[PATCH] sched: likely profilingNick Piggin
This likely profiling is pretty fun. I found a few possible problems in sched.c. This patch may be not measurable, but when I did measure long ago, nooping (un)likely cost a couple of % on scheduler heavy benchmarks, so it all adds up. Tweak some branch hints: - the 2nd 64 bits in the bitmask is likely to be populated, because it contains the first 28 bits (nearly 3/4) of the normal priorities. (ratio of 669669:691 ~= 1000:1). - it isn't unlikely that context switching switches to another process. it might be very rapidly switching to and from the idle process (ratio of 475815:419004 and 471330:423544). Let the branch predictor decide. - preempt_enable seems to be very often called in a nested preempt_disable or with interrupts disabled (ratio of 3567760:87965 ~= 40:1) Signed-off-by: Nick Piggin <npiggin@suse.de> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Daniel Walker <dwalker@mvista.com> Cc: Hua Zhong <hzhong@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-11[PATCH] fix Module taint flags listing in Oops/panicFlorin Malita
Module taint flags listing in Oops/panic has a couple of issues: * taint_flags() doesn't null-terminate the buffer after printing the flags * per-module taints are only set if the kernel is not already tainted (with that particular flag) => only the first offending module gets its taint info correctly updated Some additional changes: * 'license_gplok' is no longer needed - equivalent to !(taints & TAINT_PROPRIETARY_MODULE) - so we can drop it from struct module * exporting module taint info via /proc/module: pwc 88576 0 - Live 0xf8c32000 evilmod 6784 1 pwc, Live 0xf8bbf000 (PF) Signed-off-by: Florin Malita <fmalita@gmail.com> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-11[PATCH] Add carta_random32() library routineStephane Eranian
This is a follow-up patch based on the review for perfmon2. This patch adds the carta_random32() library routine + carta_random32.h header file. This is fast, simple, and efficient pseudo number generator algorithm. We use it in perfmon2 to randomize the sampling periods. In this context, we do not need any fancy randomizer. Signed-off-by: stephane eranian <eranian@hpl.hp.com> Cc: David Mosberger <david.mosberger@acm.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-11[PATCH] epoll_pwait()Davide Libenzi
Implement the epoll_pwait system call, that extend the event wait mechanism with the same logic ppoll and pselect do. The definition of epoll_pwait is: int epoll_pwait(int epfd, struct epoll_event *events, int maxevents, int timeout, const sigset_t *sigmask, size_t sigsetsize); The difference between the vanilla epoll_wait and epoll_pwait is that the latter allows the caller to specify a signal mask to be set while waiting for events. Hence epoll_pwait will wait until either one monitored event, or an unmasked signal happen. If sigmask is NULL, the epoll_pwait system call will act exactly like epoll_wait. For the POSIX definition of pselect, information is available here: http://www.opengroup.org/onlinepubs/009695399/functions/select.html Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Andi Kleen <ak@muc.de> Cc: Michael Kerrisk <mtk-manpages@gmx.net> Cc: Ulrich Drepper <drepper@redhat.com> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-11[PATCH] mm: locks_freed fixNick Piggin
Move the lock debug checks below the page reserved checks. Also, having debug_check_no_locks_freed in kernel_map_pages is wrong. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-11[PATCH] ext4 uninline ext4_get_group_no_and_offset()Andrew Morton
Way too big to inline. Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>