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| author | Davidlohr Bueso <davidlohr.bueso@hp.com> | 2013-09-11 14:26:18 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-18 07:45:47 -0700 |
| commit | d6187ddfc90715e95b8c73f49887781b4b2a1ebc (patch) | |
| tree | 6e0f6520ec0be801ad67d7a68c49daf1041bbda2 /Documentation/SM501.txt | |
| parent | 60425b7b25c07bbc55f39ce1b178c5bf86e679e4 (diff) | |
ipc,shm: introduce shmctl_nolock
commit 68eccc1dc345539d589ae78ee43b835c1a06a134 upstream.
Similar to semctl and msgctl, when calling msgctl, the *_INFO and *_STAT
commands can be performed without acquiring the ipc object.
Add a shmctl_nolock() function and move the logic of *_INFO and *_STAT out
of msgctl(). Since we are just moving functionality, this change still
takes the lock and it will be properly lockless in the next patch.
Signed-off-by: Davidlohr Bueso <davidlohr.bueso@hp.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/SM501.txt')
0 files changed, 0 insertions, 0 deletions