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authorDavidlohr Bueso <davidlohr.bueso@hp.com>2013-09-11 14:26:18 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-11 15:59:39 -0700
commit68eccc1dc345539d589ae78ee43b835c1a06a134 (patch)
tree16943d2674537a5d13a14794763a3df7e51411ab /.mailmap
parent3b1c4ad37741e53804ffe0a30dd01e08b2ab6241 (diff)
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ipc,shm: introduce shmctl_nolock
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>
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