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* genirq: reimplement exit_irq_thread() hook via task_work_add()Oleg Nesterov2012-05-244-49/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | exit_irq_thread() and task->irq_thread are needed to handle the unexpected (and unlikely) exit of irq-thread. We can use task_work instead and make this all private to kernel/irq/manage.c, cleanup plus micro-optimization. 1. rename exit_irq_thread() to irq_thread_dtor(), make it static, and move it up before irq_thread(). 2. change irq_thread() to do task_work_add(irq_thread_dtor) at the start and task_work_cancel() before return. tracehook_notify_resume() can never play with kthreads, only do_exit()->exit_task_work() can call the callback and this is what we want. 3. remove task_struct->irq_thread and the special hook in do_exit(). Signed-off-by: Oleg Nesterov <oleg@redhat.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Cc: David Howells <dhowells@redhat.com> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Alexander Gordeev <agordeev@redhat.com> Cc: Chris Zankel <chris@zankel.net> Cc: David Smith <dsmith@redhat.com> Cc: "Frank Ch. Eigler" <fche@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Larry Woodman <lwoodman@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* task_work_add: generic process-context callbacksOleg Nesterov2012-05-247-2/+136
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Provide a simple mechanism that allows running code in the (nonatomic) context of the arbitrary task. The caller does task_work_add(task, task_work) and this task executes task_work->func() either from do_notify_resume() or from do_exit(). The callback can rely on PF_EXITING to detect the latter case. "struct task_work" can be embedded in another struct, still it has "void *data" to handle the most common/simple case. This allows us to kill the ->replacement_session_keyring hack, and potentially this can have more users. Performance-wise, this adds 2 "unlikely(!hlist_empty())" checks into tracehook_notify_resume() and do_exit(). But at the same time we can remove the "replacement_session_keyring != NULL" checks from arch/*/signal.c and exit_creds(). Note: task_work_add/task_work_run abuses ->pi_lock. This is only because this lock is already used by lookup_pi_state() to synchronize with do_exit() setting PF_EXITING. Fortunately the scope of this lock in task_work.c is really tiny, and the code is unlikely anyway. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: David Howells <dhowells@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Alexander Gordeev <agordeev@redhat.com> Cc: Chris Zankel <chris@zankel.net> Cc: David Smith <dsmith@redhat.com> Cc: "Frank Ch. Eigler" <fche@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Larry Woodman <lwoodman@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* avr32: missed _TIF_NOTIFY_RESUME on one of do_notify_resume callersAl Viro2012-05-241-1/+1
| | | | | | we need that not just on syscall returns but on irq ones as well... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* parisc: need to check NOTIFY_RESUME when exiting from syscallAl Viro2012-05-241-1/+1
| | | | | | ... not just on return from interrupt Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* move key_repace_session_keyring() into tracehook_notify_resume()Al Viro2012-05-2430-66/+6
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* TIF_NOTIFY_RESUME is defined on all targets nowAl Viro2012-05-242-12/+0
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* Merge branch 'for-linus' of ↵Linus Torvalds2012-05-2454-817/+386
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal Pull first series of signal handling cleanups from Al Viro: "This is just the first part of the queue (about a half of it); assorted fixes all over the place in signal handling. This one ends with all sigsuspend() implementations switched to generic one (->saved_sigmask-based). With this, a bunch of assorted old buglets are fixed and most of the missing bits of NOTIFY_RESUME hookup are in place. Two more fixes sit in arm and um trees respectively, and there's a couple of broken ones that need obvious fixes - parisc and avr32 check TIF_NOTIFY_RESUME only on one of two codepaths; fixes for that will happen in the next series" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (55 commits) unicore32: if there's no handler we need to restore sigmask, syscall or no syscall xtensa: add handling of TIF_NOTIFY_RESUME microblaze: drop 'oldset' argument of do_notify_resume() microblaze: handle TIF_NOTIFY_RESUME score: add handling of NOTIFY_RESUME to do_notify_resume() m68k: add TIF_NOTIFY_RESUME and handle it. sparc: kill ancient comment in sparc_sigaction() h8300: missing checks of __get_user()/__put_user() return values frv: missing checks of __get_user()/__put_user() return values cris: missing checks of __get_user()/__put_user() return values powerpc: missing checks of __get_user()/__put_user() return values sh: missing checks of __get_user()/__put_user() return values sparc: missing checks of __get_user()/__put_user() return values avr32: struct old_sigaction is never used m32r: struct old_sigaction is never used xtensa: xtensa_sigaction doesn't exist alpha: tidy signal delivery up score: don't open-code force_sigsegv() cris: don't open-code force_sigsegv() blackfin: don't open-code force_sigsegv() ...
| * unicore32: if there's no handler we need to restore sigmask, syscall or no ↵Al Viro2012-05-221-8/+5
| | | | | | | | | | | | syscall Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * xtensa: add handling of TIF_NOTIFY_RESUMEAl Viro2012-05-223-6/+20
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * microblaze: drop 'oldset' argument of do_notify_resume()Al Viro2012-05-223-19/+11
| | | | | | | | | | | | never used... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * microblaze: handle TIF_NOTIFY_RESUMEAl Viro2012-05-223-26/+38
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * score: add handling of NOTIFY_RESUME to do_notify_resume()Al Viro2012-05-221-1/+8
| | | | | | | | | | | | | | | | | | It's already called if TIF_NOTIFY_RESUME is set, so we only need to add the actual work. Note that checking for RESTORE_SIGMASK was not needed - set_restore_sigmask() also sets SIGPENDING, so we never RESTORE_SIGMASK without SIGPENDING. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * m68k: add TIF_NOTIFY_RESUME and handle it.Al Viro2012-05-226-7/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | TIF_NOTIFY_RESUME added (as bit 5). That way nommu glue needs no changes at all; mmu one needs just to replace jmi do_signal_return to jne do_signal_return There we have flags shifted up, until bit 6 (SIGPENDING) is in MSBit; instead of checking that MSBit is set (jmi) we check that MSBit or something below it is set (jne); bits 0..4 are never set, so that's precisely "bit 6 or bit 5 is set". Usual handling of NOTIFY_RESUME/SIGPENDING is done in do_notify_resume(); glue calls it instead of do_signal(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * sparc: kill ancient comment in sparc_sigaction()Al Viro2012-05-221-5/+0
| | | | | | | | | | | | | | It used to be true, until 2.1.78 (14 years ago) when we switched to do_sigaction()... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * h8300: missing checks of __get_user()/__put_user() return valuesAl Viro2012-05-221-6/+6
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * frv: missing checks of __get_user()/__put_user() return valuesAl Viro2012-05-221-6/+6
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * cris: missing checks of __get_user()/__put_user() return valuesAl Viro2012-05-222-12/+12
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * powerpc: missing checks of __get_user()/__put_user() return valuesAl Viro2012-05-221-3/+3
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * sh: missing checks of __get_user()/__put_user() return valuesAl Viro2012-05-222-22/+27
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * sparc: missing checks of __get_user()/__put_user() return valuesAl Viro2012-05-222-10/+12
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * avr32: struct old_sigaction is never usedAl Viro2012-05-221-7/+0
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * m32r: struct old_sigaction is never usedAl Viro2012-05-221-7/+0
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * xtensa: xtensa_sigaction doesn't existAl Viro2012-05-222-9/+0
| | | | | | | | | | | | ... and struct old_sigaction never used Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * alpha: tidy signal delivery upAl Viro2012-05-221-43/+26
| | | | | | | | | | | | | | | | | | | | * move force_sigsegv() (from setup...frame()) and clearing RESTART_SIGMASK (from do_signal()) into hanlde_signal() * get rid of handle_signal() return value and oldset argument * checking for TIF_SIGPENDING is enough; set_restart_sigmask() sets this one as well. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * score: don't open-code force_sigsegv()Al Viro2012-05-221-3/+1
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * cris: don't open-code force_sigsegv()Al Viro2012-05-221-8/+2
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * blackfin: don't open-code force_sigsegv()Al Viro2012-05-221-3/+1
| | | | | | | | | | | | | | ... especially since we don't have the right k_sigaction here, so resetting sa_handler won't work. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * avr32: need to clear RESTORE_SIGMASK on successful signal deliveryAl Viro2012-05-221-0/+1
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * microblaze: bury sys_rt_sigsuspend_wrapper in nommu case tooAl Viro2012-05-221-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | It's been a dead code since commit 571202f50fad0aeb36661c79de9beed052347df8 Author: Michal Simek <monstr@monstr.eu> Date: Fri Dec 11 12:54:04 2009 +0100 microblaze: Remove rt_sigsuspend wrapper Generic rt_sigsuspend syscalls doesn't need any asm wrapper. but that commit has only removed it from entry.S, missing one in entry-nommu.S. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * cris: SA_ONESHOT handling is done by get_signal_to_deliver()Al Viro2012-05-221-3/+0
| | | | | | | | | | | | | | ... and resetting sa_handler in local copy filled by get_signal_to_deliver() is obviously pointless anyway. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * h8300: switch to saved_sigmask-based sigsuspend/rt_sigsuspendAl Viro2012-05-223-59/+21
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * h8300: don't change blocked signals' mask if setting frame up failsAl Viro2012-05-221-7/+11
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * sh: switch to saved_sigmask-based sigsuspend()/rt_sigsuspend()Al Viro2012-05-224-71/+13
| | | | | | | | | | | | | | | | | | Complete the move of sh64 to it, trim the crap from prototypes, tidy up a bit. Infrastructure in do_signal() had already been there, in signal_64 as well as in signal_32 (where it was already used). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * xtensa: switch to generic rt_sigsuspend(2)Al Viro2012-05-224-43/+16
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * avr32: ->restart_block.fn needs to be reset on rt_sigreturnAl Viro2012-05-221-0/+3
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * xtensa: ->restart_block.fn needs to be reset on rt_sigreturnAl Viro2012-05-221-0/+3
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * score: ->restart_block.fn needs to be reset on rt_sigreturnAl Viro2012-05-221-0/+3
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * microblaze: ->restart_block.fn needs to be reset on rt_sigreturnAl Viro2012-05-221-0/+3
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * hexagon: ->restart_block.fn needs to be reset on rt_sigreturnAl Viro2012-05-221-0/+3
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * c6x: ->restart_block.fn needs to be reset on rt_sigreturnAl Viro2012-05-221-0/+3
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * parisc: resetting ->restart_block.fn needs to be done on rt_sigreturn()Al Viro2012-05-221-2/+1
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * m68k: use set_current_blocked() and block_sigmask()Matt Fleming2012-05-221-8/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As described in e6fa16ab ("signal: sigprocmask() should do retarget_shared_pending()") the modification of current->blocked is incorrect as we need to check whether the signal we're about to block is pending in the shared queue. Also, use the new helper function introduced in commit 5e6292c0f28f ("signal: add block_sigmask() for adding sigmask to current->blocked") which centralises the code for updating current->blocked after successfully delivering a signal and reduces the amount of duplicate code across architectures. In the past some architectures got this code wrong, so using this helper function should stop that from happening again. Acked-by: Oleg Nesterov <oleg@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * hexagon: do_notify_resume() needs tracehook_notify_resume()Oleg Nesterov2012-05-221-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch/hexagon/kernel/signal.c:do_notify_resume() forgets to call tracehook_notify_resume() if TIF_NOTIFY_RESUME is set. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Richard Kuo <rkuo@codeaurora.org> Cc: David Howells <dhowells@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Alexander Gordeev <agordeev@redhat.com> Cc: Chris Zankel <chris@zankel.net> Cc: David Smith <dsmith@redhat.com> Cc: "Frank Ch. Eigler" <fche@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Larry Woodman <lwoodman@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * avr32: use block_sigmask()Matt Fleming2012-05-221-5/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new helper function introduced in commit 5e6292c0f28f ("signal: add block_sigmask() for adding sigmask to current->blocked") which centralises the code for updating current->blocked after successfully delivering a signal and reduces the amount of duplicate code across architectures. In the past some architectures got this code wrong, so using this helper function should stop that from happening again. Acked-by: Oleg Nesterov <oleg@redhat.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Cc: Havard Skinnemoen <hskinnemoen@gmail.com> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * avr32: use set_current_blocked() in handle_signal/sys_rt_sigreturnOleg Nesterov2012-05-221-10/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | It is wrong to change ->blocked directly, see e6fa16ab. Change handle_signal() and sys_rt_sigreturn() to use the right helper, set_current_blocked(). Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Acked-by: Havard Skinnemoen <hskinnemoen@gmail.com> Reviewed-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * avr32: don't mask signals in the error pathMatt Fleming2012-05-221-13/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current handle_signal() implementation is broken - it will mask signals if we fail to setup the signal stack frame, which isn't the desired behaviour, we should only be masking signals if we succeed in setting up the stack frame. It looks like this code was copied from the old (broken) arm implementation but wasn't updated when the arm code was fixed in commit a6c61e9dfdd0 ("[ARM] 3168/1: Update ARM signal delivery and masking"). Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Acked-by: Havard Skinnemoen <hskinnemoen@gmail.com> Acked-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * m32r: use set_current_blocked() and block_sigmask()Matt Fleming2012-05-221-10/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As described in e6fa16ab ("signal: sigprocmask() should do retarget_shared_pending()") the modification of current->blocked is incorrect as we need to check whether the signal we're about to block is pending in the shared queue. Also, use the new helper function introduced in commit 5e6292c0f28f ("signal: add block_sigmask() for adding sigmask to current->blocked") which centralises the code for updating current->blocked after successfully delivering a signal and reduces the amount of duplicate code across architectures. In the past some architectures got this code wrong, so using this helper function should stop that from happening again. Acked-by: Oleg Nesterov <oleg@redhat.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Kyle McMartin <kyle@redhat.com> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * mn10300: use set_current_blocked() and block_sigmask()Matt Fleming2012-05-221-17/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As described in e6fa16ab ("signal: sigprocmask() should do retarget_shared_pending()") the modification of current->blocked is incorrect as we need to check whether the signal we're about to block is pending in the shared queue. Also, use the new helper function introduced in commit 5e6292c0f28f ("signal: add block_sigmask() for adding sigmask to current->blocked") which centralises the code for updating current->blocked after successfully delivering a signal and reduces the amount of duplicate code across architectures. In the past some architectures got this code wrong, so using this helper function should stop that from happening again. Acked-by: Oleg Nesterov <oleg@redhat.com> Acked-by: David Howells <dhowells@redhat.com> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * cris: use set_current_blocked() and block_sigmask()Matt Fleming2012-05-222-38/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As described in e6fa16ab ("signal: sigprocmask() should do retarget_shared_pending()") the modification of current->blocked is incorrect as we need to check whether the signal we're about to block is pending in the shared queue. Also, use the new helper function introduced in commit 5e6292c0f28f ("signal: add block_sigmask() for adding sigmask to current->blocked") which centralises the code for updating current->blocked after successfully delivering a signal and reduces the amount of duplicate code across architectures. In the past some architectures got this code wrong, so using this helper function should stop that from happening again. Acked-by: Oleg Nesterov <oleg@redhat.com> Cc: Mikael Starvik <starvik@axis.com> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * ia64: use set_current_blocked() and block_sigmask()Matt Fleming2012-05-221-13/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As described in e6fa16ab ("signal: sigprocmask() should do retarget_shared_pending()") the modification of current->blocked is incorrect as we need to check whether the signal we're about to block is pending in the shared queue. Also, use the new helper function introduced in commit 5e6292c0f28f ("signal: add block_sigmask() for adding sigmask to current->blocked") which centralises the code for updating current->blocked after successfully delivering a signal and reduces the amount of duplicate code across architectures. In the past some architectures got this code wrong, so using this helper function should stop that from happening again. Acked-by: Oleg Nesterov <oleg@redhat.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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