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| author | Manfred Spraul | 2013-09-30 22:45:07 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2013-09-30 23:31:01 +0200 |
| commit | d8c633766ad88527f25d9f81a5c2f083d78a2b39 (patch) | |
| tree | 68d0ce69d04d245b8c4236b84892ea740232d6f2 /virt/kvm/async_pf.c | |
| parent | ipc/sem.c: optimize sem_lock() (diff) | |
| download | kernel-qcow2-linux-d8c633766ad88527f25d9f81a5c2f083d78a2b39.tar.gz kernel-qcow2-linux-d8c633766ad88527f25d9f81a5c2f083d78a2b39.tar.xz kernel-qcow2-linux-d8c633766ad88527f25d9f81a5c2f083d78a2b39.zip | |
ipc/sem.c: synchronize the proc interface
The proc interface is not aware of sem_lock(), it instead calls
ipc_lock_object() directly. This means that simple semop() operations
can run in parallel with the proc interface. Right now, this is
uncritical, because the implementation doesn't do anything that requires
a proper synchronization.
But it is dangerous and therefore should be fixed.
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Cc: Davidlohr Bueso <davidlohr.bueso@hp.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'virt/kvm/async_pf.c')
0 files changed, 0 insertions, 0 deletions