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(parent: 3dd1f78) | patch
ipc,msg: shorten critical region in msgrcv
authorDavidlohr Bueso <davidlohr.bueso@hp.com>
Mon, 8 Jul 2013 23:01:18 +0000 (16:01 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 9 Jul 2013 17:33:27 +0000 (10:33 -0700)
commit41a0d523d0f626e9da0dc01de47f1b89058033cf
treeaf4021f97c49c59784dbab62fb1dad36fe6d6f3ctree | snapshot (tar.gz zip)
parent3dd1f784ed6603d7ab1043e51e6371235edf2313commit | diff
ipc,msg: shorten critical region in msgrcv

do_msgrcv() is the last msg queue function that abuses the ipc lock Take
it only when needed when actually updating msq.

Signed-off-by: Davidlohr Bueso <davidlohr.bueso@hp.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Rik van Riel <riel@redhat.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
ipc/msg.c diff | blob | blame | history