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authorJiri Slaby <jslaby@suse.cz>2010-03-10 15:23:05 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-12 15:52:39 -0800
commitf1eb1332b8f07e937add24c6fd2ac40b8737a2f4 (patch)
tree43bfaac596ae20dcab088b870406e58a2bb4b78a /ipc/shm.c
parentcopy_signal() cleanup: clean tty_audit_fork() (diff)
downloadlinux-dev-f1eb1332b8f07e937add24c6fd2ac40b8737a2f4.tar.xz
linux-dev-f1eb1332b8f07e937add24c6fd2ac40b8737a2f4.zip
ipc: use rlimit helpers
Make sure compiler won't do weird things with limits. E.g. fetching them twice may return 2 different values after writable limits are implemented. I.e. either use rlimit helpers added in 3e10e716abf3c71bdb5d86b8f507f9e72236c9cd ("resource: add helpers for fetching rlimits") or ACCESS_ONCE if not applicable. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
-rw-r--r--ipc/shm.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/ipc/shm.c b/ipc/shm.c
index 23256b855819..1a314c89f93c 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -764,8 +764,7 @@ SYSCALL_DEFINE3(shmctl, int, shmid, int, cmd, struct shmid_ds __user *, buf)
if (euid != shp->shm_perm.uid &&
euid != shp->shm_perm.cuid)
goto out_unlock;
- if (cmd == SHM_LOCK &&
- !current->signal->rlim[RLIMIT_MEMLOCK].rlim_cur)
+ if (cmd == SHM_LOCK && !rlimit(RLIMIT_MEMLOCK))
goto out_unlock;
}