From: Tony Battersby <tonyb@cybernetics.com>
Date: Thu, 2 Apr 2009 23:58:26 +0000 (-0700)
Subject: ipc: make shm_get_stat() more robust
X-Git-Tag: v2.6.30-rc1~319
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e562aebc6ccd4385cbbf24debe88ab4bb500c5b4;p=pandora-kernel.git

ipc: make shm_get_stat() more robust

shm_get_stat() assumes idr_find(&shm_ids(ns).ipcs_idr) returns "struct
shmid_kernel *"; all other callers assume that it returns "struct
kern_ipc_perm *".  This works because "struct kern_ipc_perm" is currently
the first member of "struct shmid_kernel", but it would be better to use
container_of() to prevent future breakage.

Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Cc: Jiri Olsa <olsajiri@gmail.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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