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| author | Manfred Spraul <manfred@colorfullife.com> | 2013-09-30 13:45:25 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-18 07:45:48 -0700 |
| commit | e556ea0191d648c63fbc4fe24bbfb15ad872a205 (patch) | |
| tree | a5a45211eff01fde39bca0c148327cca54405e42 /drivers/net/xen-netback/interface.c | |
| parent | 83aeb6e3449cc54fa8867a0c9cc1b8d2484fa91e (diff) | |
ipc/sem.c: update sem_otime for all operations
commit 0e8c665699e953fa58dc1b0b0d09e5dce7343cc7 upstream.
In commit 0a2b9d4c7967 ("ipc/sem.c: move wake_up_process out of the
spinlock section"), the update of semaphore's sem_otime(last semop time)
was moved to one central position (do_smart_update).
But since do_smart_update() is only called for operations that modify
the array, this means that wait-for-zero semops do not update sem_otime
anymore.
The fix is simple:
Non-alter operations must update sem_otime.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Reported-by: Jia He <jiakernel@gmail.com>
Tested-by: Jia He <jiakernel@gmail.com>
Cc: Davidlohr Bueso <davidlohr.bueso@hp.com>
Cc: Mike Galbraith <efault@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/xen-netback/interface.c')
0 files changed, 0 insertions, 0 deletions