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2011-09-14mm: account skipped entries to avoid looping in find_get_pagesShaohua Li1-2/+4
The found entries by find_get_pages() could be all swap entries. In this case we skip the entries, but make sure the skipped entries are accounted, so we don't keep looping. Using nr_found > nr_skip to simplify code as suggested by Eric. Reported-and-tested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14drivers/gpio/gpio-generic.c: fix build errorsRussell King2-20/+10
Building a kernel with hotplug disabled results in a link failure: `bgpio_remove' referenced in section `___ksymtab_gpl+bgpio_remove' of drivers/built-in.o: defined in discarded section `.devexit.text' of drivers/built-in.o This is because of bgpio_remove() is exported. It is illegal to export symbols which are discarded either at link time or as part of an init/exit section. Fix this by dropping the __devexit attributation from bgpio_remove(). Also drop the __devinit attributation from bgpio_init(). Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14workqueue: lock cwq access in drain_workqueueThomas Tuttle1-1/+6
Take cwq->gcwq->lock to avoid racing between drain_workqueue checking to make sure the workqueues are empty and cwq_dec_nr_in_flight decrementing and then incrementing nr_active when it activates a delayed work. We discovered this when a corner case in one of our drivers resulted in us trying to destroy a workqueue in which the remaining work would always requeue itself again in the same workqueue. We would hit this race condition and trip the BUG_ON on workqueue.c:3080. Signed-off-by: Thomas Tuttle <ttuttle@chromium.org> Acked-by: Tejun Heo <tj@kernel.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14MAINTAINERS: update e-mail address of Benny HalevyBenny Halevy1-1/+1
Acked-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14drivers/cpufreq/pcc-cpufreq.c: avoid NULL pointer dereferenceNaga Chumbalkar1-0/+3
per_cpu(processors, n) can be NULL, resulting in: Loading CPUFreq modules[ 437.661360] BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<ffffffffa0434314>] pcc_cpufreq_cpu_init+0x74/0x220 [pcc_cpufreq] It's better to avoid the oops by failing the driver, and allowing the system to boot. Signed-off-by: Naga Chumbalkar <nagananda.chumbalkar@hp.com> Cc: Dave Jones <davej@codemonkey.org.uk> Cc: Len Brown <lenb@kernel.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14drivers/rtc/rtc-s3c.c: fix no occurrence of alarm interruptDonggeun Kim1-0/+26
The driver does not generate an alarm interrupt even though a time for an alarm is set. This results from disabling rtc_clk after setting the alarm time. To generate an alarm interrupt the driver should maintain its enabled state for rtc_clk the until alarm interrupt occurs. This patch permits generation of an alarm interrupt. [akpm@linux-foundation.org: make s3c_rtc_alarm_clk_lock local to s3c_rtc_alarm_clk_enable()] Signed-off-by: Donggeun Kim <dg77.kim@samsung.com> Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14drivers/leds/ledtrig-timer.c: fix broken sysfs delay handlingJohan Hovold1-0/+2
Fix regression introduced by commit 5ada28bf7675 ("led-class: always implement blinking") which broke sysfs delay handling by not storing the updated value. Consequently it was only possible to set one of the delays through the sysfs interface as the other delay was automatically restored to it's default value. Reading the parameters always gave the defaults. Signed-off-by: Johan Hovold <jhovold@gmail.com> Acked-by: Florian Fainelli <florian@openwrt.org> Acked-by: Richard Purdie <richard.purdie@linuxfoundation.org> Cc: <stable@kernel.org> [2.6.37+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14drivers/misc/pti.c: give 'comm' function scope in ↵Jesper Juhl1-7/+5
pti_control_frame_built_and_sent() In drivers/misc/pti.c::pti_control_frame_built_and_sent() we assign 'comm' to 'thread_name_p' if (!thread_name). The problem is that 'comm' then goes out of scope and later we use 'thread_name_p' which now refers to an out-of-scope variable. To fix that, simply move 'comm' up to have function scope. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: J Freyensee <james_p_freyensee@linux.intel.com> Cc: Jeremy Rocher <rocher.jeremy@gmail.com> Cc: Sergei Trofimovich <slyfox@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14cris: fix a build error in drivers/tty/serial/crisv10.cWANG Cong1-2/+2
Fix these errors: drivers/tty/serial/crisv10.c:4453: error: 'if_ser0' undeclared (first use in this function): 2 errors in 2 logs drivers/tty/serial/crisv10.c:4453: error: (Each undeclared identifier is reported only once: 2 errors in 2 logs drivers/tty/serial/crisv10.c:4453: error: for each function it appears in.): 2 errors in 2 logs "if_ser0" is a typo, it should be "if_serial_0". Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14mm: sync vmalloc address space page tables in alloc_vm_area()David Vrabel1-0/+8
Xen backend drivers (e.g., blkback and netback) would sometimes fail to map grant pages into the vmalloc address space allocated with alloc_vm_area(). The GNTTABOP_map_grant_ref would fail because Xen could not find the page (in the L2 table) containing the PTEs it needed to update. (XEN) mm.c:3846:d0 Could not find L1 PTE for address fbb42000 netback and blkback were making the hypercall from a kernel thread where task->active_mm != &init_mm and alloc_vm_area() was only updating the page tables for init_mm. The usual method of deferring the update to the page tables of other processes (i.e., after taking a fault) doesn't work as a fault cannot occur during the hypercall. This would work on some systems depending on what else was using vmalloc. Fix this by reverting ef691947d8a3 ("vmalloc: remove vmalloc_sync_all() from alloc_vm_area()") and add a comment to explain why it's needed. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Ian Campbell <Ian.Campbell@citrix.com> Cc: Keir Fraser <keir.xen@gmail.com> Cc: <stable@kernel.org> [3.0.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14memcg: Revert "memcg: add memory.vmscan_stat"Johannes Weiner5-303/+18
Revert the post-3.0 commit 82f9d486e59f5 ("memcg: add memory.vmscan_stat"). The implementation of per-memcg reclaim statistics violates how memcg hierarchies usually behave: hierarchically. The reclaim statistics are accounted to child memcgs and the parent hitting the limit, but not to hierarchy levels in between. Usually, hierarchical statistics are perfectly recursive, with each level representing the sum of itself and all its children. Since this exports statistics to userspace, this may lead to confusion and problems with changing things after the release, so revert it now, we can try again later. Signed-off-by: Johannes Weiner <jweiner@redhat.com> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Michal Hocko <mhocko@suse.cz> Cc: Ying Han <yinghan@google.com> Cc: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14mm: vmscan: fix force-scanning small targets without swapJohannes Weiner1-15/+12
Without swap, anonymous pages are not scanned. As such, they should not count when considering force-scanning a small target if there is no swap. Otherwise, targets are not force-scanned even when their effective scan number is zero and the other conditions--kswapd/memcg--apply. This fixes 246e87a93934 ("memcg: fix get_scan_count() for small targets"). [akpm@linux-foundation.org: fix comment] Signed-off-by: Johannes Weiner <jweiner@redhat.com> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Reviewed-by: Michal Hocko <mhocko@suse.cz> Cc: Ying Han <yinghan@google.com> Cc: Balbir Singh <bsingharora@gmail.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Acked-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14drivers/rtc/rtc-imxdi.c needs linux/sched.hAxel Lin1-0/+1
Include linux/sched.h to fix below build error. CC drivers/rtc/rtc-imxdi.o drivers/rtc/rtc-imxdi.c: In function 'di_write_wait': drivers/rtc/rtc-imxdi.c:168: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function) drivers/rtc/rtc-imxdi.c:168: error: (Each undeclared identifier is reported only once drivers/rtc/rtc-imxdi.c:168: error: for each function it appears in.) drivers/rtc/rtc-imxdi.c:168: error: implicit declaration of function 'signal_pending' drivers/rtc/rtc-imxdi.c:168: error: implicit declaration of function 'schedule_timeout' drivers/rtc/rtc-imxdi.c: In function 'dryice_norm_irq': drivers/rtc/rtc-imxdi.c:329: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function) Signed-off-by: Axel Lin <axel.lin@gmail.com> Cc: Baruch Siach <baruch@tkos.co.il> Cc: Wan ZongShun <mcuos.com@gmail.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14alpha, gpio: GENERIC_GPIO default must be nBen Hutchings1-1/+1
Since GPIOLIB is optional on alpha, GENERIC_GPIO must not be selected by default. If GPIOLIB is enabled, it will select GENERIC_GPIO. See <http://bugs.debian.org/638696> for an example of what 'def_bool y' breaks. Reported-by: Michael Cree <mcree@orcon.net.nz> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Michael Cree <mcree@orcon.net.nz> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14um: fix strrchr() problemsAl Viro1-1/+1
richard@nod.at: Fixes: /usr/lib/gcc/x86_64-linux-gnu/4.4.5/../../../../lib/libc.a(strrchr.o): In function `rindex': (.text+0x0): multiple definition of `strrchr' If both STATIC_LINK and UML_NET_VDE are set to "y" libc's strrchr may clash with the kernel implementation. This workaround comes originally from Jeff Dike: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494995#35 Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14um: clean arch_ptrace() up a bitAl Viro5-46/+31
1) take subarch-specific stuff to subarch_ptrace() 2) PTRACE_{PEEK,POKE}{TEXT,DATA} is handled by ptrace_request() just fine... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14um: PTRACE_[GS]ETFPXREGS had been wired on the wrong subarchAl Viro2-14/+14
It's 32bit-only, not 64bit-only... And while we are at it, it's set_fpxregs(), not set_fpregs()... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14um: fix free_winch() messAl Viro1-14/+24
while not doing free_irq() from irq handler is commendable, kfree() on the data passed to said handler before free_irq() is Not Good(tm). Freeing the stack it's being run on is also not nice... Solution: delay actually freeing stuff. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14um: winch_interrupt() can happen inside of free_winch()Al Viro1-2/+4
... so set winch->fd to -1 before doing free_irq(), to avoid having winch_interrupt() come from/during the latter and attempt to do reactivate_fd() on something that's already gone. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14um: fix oopsable race in line_close()Al Viro2-13/+13
tty->count is decremented only after ->close() had been called and several tasks can hit it in parallel. As the result, using tty->count to check if you are the last one is broken. We end up leaving line->tty not reset to NULL and the next IRQ on that sucker will blow up trying to dereference pointers from kfree'd struct tty. Fix is obvious: we need to use a counter of our own. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14um: Save FPU registers between task switchesIngo van Lil7-5/+31
Some time ago Jeff prepared 42daba316557 ("uml: stop saving process FP state") for UML to stop saving the process FP state between task switches. The assumption was that since with SKAS0 every guest process runs inside a host process context the host OS will take care of keeping the proper FP state. Unfortunately this is not true for multi-threaded applications, where all guest threads share a single host process context yet all may use the FPU on their own. Although I haven't verified it I suspect things to be even worse in SKAS3 mode where all guest processes run inside a single host process. The patch reintroduces the saving and restoring of the FP context between task switches. [richard@nod.at: Ingo posted this patch in 2009, sadly it was never applied and got lost. Now in 2011 the problem was reported by Gunnar.] Signed-off-by: Ingo van Lil <inguin@gmx.de> Signed-off-by: Richard Weinberger <richard@nod.at> Reported-by: <gunnarlindroth@hotmail.com> Tested-by: <gunnarlindroth@hotmail.com> Cc: Stanislav Meduna <stano@meduna.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14um: drivers/xterm.c: fix a file descriptor leakJonathan Neuschäfer1-0/+1
I could use out_close1, but that seems to be the code path to close the fd returned by os_create_unix_socket, and using it to close the fd returned by mkstemp might lead to some confusion, so I don't do it. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14um: disable CMPXCHG_DOUBLE as it breaks UML buildThadeu Lima de Souza Cascardo1-0/+4
Commit b789ef518b2 ("slub: Add cmpxchg_double_slab()") tests for cmpxchg_double support in the SLUB code and it breaks UML builds with SLUB. Since UML does not support checking for CPU features, disable CMPXCHG_DOUBLE just like CMPXCHG_LOCAL is disabled for UML. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Reviewed-by: Christoph Lameter <cl@linux.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14numa: fix NUMA compile error when sysfs and procfs are disabledDavid Rientjes1-2/+2
The vmstat_text array is only defined for CONFIG_SYSFS or CONFIG_PROC_FS, yet it is referenced for per-node vmstat with CONFIG_NUMA: drivers/built-in.o: In function `node_read_vmstat': node.c:(.text+0x1106df): undefined reference to `vmstat_text' Introduced in commit fa25c503dfa2 ("mm: per-node vmstat: show proper vmstats"). Define the array for CONFIG_NUMA as well. [akpm@linux-foundation.org: remove unneeded ifdefs] Signed-off-by: David Rientjes <rientjes@google.com> Reported-by: Cong Wang <amwang@redhat.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14mm/mempolicy.c: make copy_from_user() provably correctKAMEZAWA Hiroyuki1-1/+3
When compiling mm/mempolicy.c with struct user copy checks the following warning is shown: In file included from arch/x86/include/asm/uaccess.h:572, from include/linux/uaccess.h:5, from include/linux/highmem.h:7, from include/linux/pagemap.h:10, from include/linux/mempolicy.h:70, from mm/mempolicy.c:68: In function `copy_from_user', inlined from `compat_sys_get_mempolicy' at mm/mempolicy.c:1415: arch/x86/include/asm/uaccess_64.h:64: warning: call to `copy_from_user_overflow' declared with attribute warning: copy_from_user() buffer size is not provably correct LD mm/built-in.o Fix this by passing correct buffer size value. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14mm/mempolicy.c: fix pgoff in mbind vma mergeCaspar Zhang1-3/+2
commit 9d8cebd4bcd7 ("mm: fix mbind vma merge problem") didn't really fix the mbind vma merge problem due to wrong pgoff value passing to vma_merge(), which made vma_merge() always return NULL. Before the patch applied, we are getting a result like: addr = 0x7fa58f00c000 [snip] 7fa58f00c000-7fa58f00d000 rw-p 00000000 00:00 0 7fa58f00d000-7fa58f00e000 rw-p 00000000 00:00 0 7fa58f00e000-7fa58f00f000 rw-p 00000000 00:00 0 here 7fa58f00c000->7fa58f00f000 we get 3 VMAs which are expected to be merged described as described in commit 9d8cebd. Re-testing the patched kernel with the reproducer provided in commit 9d8cebd, we get the correct result: addr = 0x7ffa5aaa2000 [snip] 7ffa5aaa2000-7ffa5aaa6000 rw-p 00000000 00:00 0 7fffd556f000-7fffd5584000 rw-p 00000000 00:00 0 [stack] Signed-off-by: Caspar Zhang <caspar@casparzhang.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Minchan Kim <minchan.kim@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14Merge git://bedivere.hansenpartnership.com/git/scsi-rc-fixes-2.6Linus Torvalds28-200/+631
* git://bedivere.hansenpartnership.com/git/scsi-rc-fixes-2.6: (25 commits) [SCSI] bnx2i: Fixed the endian on TTT for NOP out transmission [SCSI] libfc: fix referencing to fc_fcp_pkt from the frame pointer via fr_fsp() [SCSI] libfc: block SCSI eh thread for blocked rports [SCSI] libfc: fix fc_eh_host_reset [SCSI] fcoe: Fix deadlock between fip's recv_work and rtnl [SCSI] qla2xxx: Update version number to 8.03.07.07-k. [SCSI] qla2xxx: Set the task attributes after memsetting fcp cmnd. [SCSI] qla2xxx: Correct inadvertent loop state transitions during port-update handling. [SCSI] qla2xxx: Save and restore irq in the response queue interrupt handler. [SCSI] qla2xxx: Double check for command completion if abort mailbox command fails. [SCSI] qla2xxx: Acquire hardware lock while manipulating dsd list. [SCSI] qla2xxx: Fix qla24xx revision check while enabling interrupts. [SCSI] qla2xxx: T10 DIF - Fix incorrect error reporting. [SCSI] qla2xxx: T10 DIF - Handle uninitalized sectors. [SCSI] hpsa: fix physical device lun and target numbering problem [SCSI] hpsa: fix problem that OBDR devices are not detected [SCSI] isci: add version number [SCSI] isci: fix event-get pointer increment [SCSI] isci: dynamic interrupt coalescing [SCSI] isci: Leave requests alone if already terminating. ...
2011-09-14Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfsLinus Torvalds1-1/+2
* 'for-linus' of git://oss.sgi.com/xfs/xfs: xfs: fix a use after free in xfs_end_io_direct_write
2011-09-14restore pinning the victim dentry in vfs_rmdir()/vfs_rename_dir()Al Viro1-0/+4
We used to get the victim pinned by dentry_unhash() prior to commit 64252c75a219 ("vfs: remove dget() from dentry_unhash()") and ->rmdir() and ->rename() instances relied on that; most of them don't care, but ones that used d_delete() themselves do. As the result, we are getting rmdir() oopses on NFS now. Just grab the reference before locking the victim and drop it explicitly after unlocking, same as vfs_rename_other() does. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Tested-by: Simon Kirby <sim@hostway.ca> Cc: stable@kernel.org (3.0.x) Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14xfs: fix a use after free in xfs_end_io_direct_writeChristoph Hellwig1-1/+2
There is a window in which the ioend that we call inode_dio_wake on in xfs_end_io_direct_write is already free. Fix this by storing the inode pointer in a local variable. This is a fix for the regression introduced in 3.1-rc by "fs: move inode_dio_done to the end_io handler". Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
2011-09-13lib/sha1.c: quiet sparse noise about symbol not declaredH Hartley Sweeten1-0/+1
Include <linux/cryptohash.h> to pickup the declarations for sha_transform and sha_init to quite the sparse noise: warning: symbol 'sha_transform' was not declared. Should it be static? warning: symbol 'sha_init' was not declared. Should it be static? Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Mandeep Singh Baines <msb@chromium.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-13pci: Don't crash when reading mpss from root complexBenjamin Herrenschmidt1-1/+2
In pcie_find_smpss(), we have the following statement: if (dev->is_hotplug_bridge && (!list_is_singular(&dev->bus->devices) || dev->bus->self->pcie_type != PCI_EXP_TYPE_ROOT_PORT)) The problem is that at least on my machine, this gets called for the root complex (virtual P2P bridge), and dev->bus->self is NULL since the parent bus for this is not itself anchor to a PCI device. This adds the necessary NULL check. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Jon Mason <mason@myri.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-12Merge branch 'acpi' of git://github.com/lenb/linuxLinus Torvalds4-5/+9
* 'acpi' of git://github.com/lenb/linux: acpica: ACPI_MAX_SLEEP should be 2 sec, not 20 ACPI APEI: Add Kconfig option IRQ_WORK for GHES PNP: update pnp.debug usage (needs value on command line) APEI: Fix WHEA _OSC call
2011-09-12Merge branch 'upstream/bugfix' of git://github.com/jsgf/linux-xenLinus Torvalds1-2/+3
* 'upstream/bugfix' of git://github.com/jsgf/linux-xen: xen: use non-tracing preempt in xen_clocksource_read()
2011-09-12Merge branches 'apei', 'bz-13195' and 'doc' into acpiLen Brown4-5/+9
2011-09-12Linux 3.1-rc6v3.1-rc6Linus Torvalds1-1/+1
2011-09-12Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds7-28/+66
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm: Remove duplicate "return" statement drm/nv04/crtc: Bail out if FB is not bound to crtc drm/nouveau: fix nv04_sgdma_bind on non-"4kB pages" archs drm/nouveau: properly handle allocation failure in nouveau_sgdma_populate drm/nouveau: fix oops on pre-semaphore hardware drm/nv50/crtc: Bail out if FB is not bound to crtc drm/radeon/kms: fix DP detect and EDID fetch for DP bridges
2011-09-12Merge branch 'fixes' of git://git.linaro.org/people/arnd/arm-socLinus Torvalds18-18/+72
* 'fixes' of git://git.linaro.org/people/arnd/arm-soc: ARM: CSR: add missing sentinels to of_device_id tables ARM: cns3xxx: Fix newly introduced warnings in the PCIe code ARM: cns3xxx: Fix compile error caused by hardware.h removed ARM: davinci: fix cache flush build error ARM: davinci: correct MDSTAT_STATE_MASK ARM: davinci: da850 EVM: read mac address from SPI flash OMAP: omap_device: fix !CONFIG_SUSPEND case in _noirq handlers OMAP2430: hwmod: musb: add missing terminator to omap2430_usbhsotg_addrs[] OMAP3: clock: indicate that gpt12_fck and wdt1_fck are in the WKUP clockdomain OMAP4: clock: fix compile warning OMAP4: clock: re-enable previous clockdomain enable/disable sequence OMAP: clockdomain: Wait for powerdomain to be ON when using clockdomain force wakeup OMAP: powerdomains: Make all powerdomain target states as ON at init
2011-09-12ioctl: register LTTng ioctlMathieu Desnoyers1-0/+2
The LTTng 2.0 kernel tracer (stand-alone module package, available at http://lttng.org) uses the 0xF6 ioctl range for tracer control and transport operations. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-12Merge branch 'for-linus' of git://github.com/chrismason/linuxLinus Torvalds8-22/+62
* 'for-linus' of git://github.com/chrismason/linux: Btrfs: add dummy extent if dst offset excceeds file end in Btrfs: calc file extent num_bytes correctly in file clone btrfs: xattr: fix attribute removal Btrfs: fix wrong nbytes information of the inode Btrfs: fix the file extent gap when doing direct IO Btrfs: fix unclosed transaction handle in btrfs_cont_expand Btrfs: fix misuse of trans block rsv Btrfs: reset to appropriate block rsv after orphan operations Btrfs: skip locking if searching the commit root in csum lookup btrfs: fix warning in iput for bad-inode Btrfs: fix an oops when deleting snapshots
2011-09-12fuse: fix memory leakMiklos Szeredi1-4/+8
kmemleak is reporting that 32 bytes are being leaked by FUSE: unreferenced object 0xe373b270 (size 32): comm "fusermount", pid 1207, jiffies 4294707026 (age 2675.187s) hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<b05517d7>] kmemleak_alloc+0x27/0x50 [<b0196435>] kmem_cache_alloc+0xc5/0x180 [<b02455be>] fuse_alloc_forget+0x1e/0x20 [<b0245670>] fuse_alloc_inode+0xb0/0xd0 [<b01b1a8c>] alloc_inode+0x1c/0x80 [<b01b290f>] iget5_locked+0x8f/0x1a0 [<b0246022>] fuse_iget+0x72/0x1a0 [<b02461da>] fuse_get_root_inode+0x8a/0x90 [<b02465cf>] fuse_fill_super+0x3ef/0x590 [<b019e56f>] mount_nodev+0x3f/0x90 [<b0244e95>] fuse_mount+0x15/0x20 [<b019d1bc>] mount_fs+0x1c/0xc0 [<b01b5811>] vfs_kern_mount+0x41/0x90 [<b01b5af9>] do_kern_mount+0x39/0xd0 [<b01b7585>] do_mount+0x2e5/0x660 [<b01b7966>] sys_mount+0x66/0xa0 This leak report is consistent and happens once per boot on 3.1.0-rc5-dirty. This happens if a FORGET request is queued after the fuse device was released. Reported-by: Sitsofe Wheeler <sitsofe@yahoo.com> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Tested-by: Sitsofe Wheeler <sitsofe@yahoo.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-12fuse: fix flock breakageMiklos Szeredi1-0/+3
Commit 37fb3a30b4 ("fuse: fix flock") added in 3.1-rc4 caused flock() to fail with ENOSYS with the kernel ABI version 7.16 or earlier. Fix by falling back to testing FUSE_POSIX_LOCKS for ABI versions 7.16 and earlier. Reported-by: Martin Ziegler <ziegler@email.mathematik.uni-freiburg.de> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Tested-by: Martin Ziegler <ziegler@email.mathematik.uni-freiburg.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-12Merge branch 'for_3.1/pm-fixes-2' of ↵Arnd Bergmann1-0/+3
git://gitorious.org/khilman/linux-omap-pm into fixes
2011-09-12Merge branch 'sirf/fixes' into fixesArnd Bergmann4-0/+4
2011-09-11Merge branch 'v4l_for_linus' of git://linuxtv.org/mchehab/for_linusLinus Torvalds8-93/+49
* 'v4l_for_linus' of git://linuxtv.org/mchehab/for_linus: [media] vp7045: fix buffer setup [media] nuvoton-cir: simplify raw IR sample handling [media] [Resend] viacam: Don't explode if pci_find_bus() returns NULL [media] v4l2: Fix documentation of the codec device controls [media] gspca - sonixj: Fix the darkness of sensor om6802 in 320x240 [media] gspca - sonixj: Fix wrong register mask for sensor om6802 [media] gspca - ov519: Fix LED inversion of some ov519 webcams [media] pwc: precedence bug in pwc_init_controls()
2011-09-11Merge branch 'for-linus' of git://openrisc.net/~jonas/linuxLinus Torvalds4-27/+96
* 'for-linus' of git://openrisc.net/~jonas/linux: Add missing DMA ops openrisc: don't use pt_regs in struct sigcontext
2011-09-11Btrfs: add dummy extent if dst offset excceeds file end inLi Zefan1-0/+6
You can see there's no file extent with range [0, 4096]. Check this by btrfsck: # btrfsck /dev/sda7 root 5 inode 258 errors 100 ... Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-09-11Btrfs: calc file extent num_bytes correctly in file cloneLi Zefan1-3/+10
num_bytes should be 4096 not 12288. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-09-11btrfs: xattr: fix attribute removalDavid Sterba1-0/+9
An attribute is not removed by 'setfattr -x attr file' and remains visible in attr list. This makes xfstests/062 pass again. Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-09-11Btrfs: fix wrong nbytes information of the inodeMiao Xie1-2/+2
If we write some data into the data hole of the file(no preallocation for this hole), Btrfs will allocate some disk space, and update nbytes of the inode, but the other element--disk_i_size needn't be updated. At this condition, we must update inode metadata though disk_i_size is not changed(btrfs_ordered_update_i_size() return 1). # mkfs.btrfs /dev/sdb1 # mount /dev/sdb1 /mnt # touch /mnt/a # truncate -s 856002 /mnt/a # dd if=/dev/zero of=/mnt/a bs=4K count=1 conv=nocreat,notrunc # umount /mnt # btrfsck /dev/sdb1 root 5 inode 257 errors 400 found 32768 bytes used err is 1 Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
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