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authorLinus Torvalds <torvalds@linux-foundation.org>2011-08-05 05:35:59 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2011-08-05 05:35:59 (GMT)
commit140d0b2108faebc77c6523296e211e509cb9f5f9 (patch)
treece8291a62b08810cffacf7a0d377fc06c477aa44 /ipc
parent24f0eed2668b059e847ff145848ddacb75419acc (diff)
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Do 'shm_init_ns()' in an early pure_initcall
This isn't really critical any more, since other patches (commit 298507d4d2cf: "shm: optimize exit_shm()") have caused us to not actually need to touch the rw_mutex unless there are actual shm segments associated with the namespace, but we really should do tne shm_init_ns() earlier than we do now. This, together with commit 288d5abec831 ("Boot up with usermodehelper disabled") will mean that we really do initialize the initial ipc namespace data structure before we run any tasks. Tested-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc')
-rw-r--r--ipc/shm.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/ipc/shm.c b/ipc/shm.c
index b5bae9d..02ecf2c 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -105,9 +105,16 @@ void shm_exit_ns(struct ipc_namespace *ns)
}
#endif
-void __init shm_init (void)
+static int __init ipc_ns_init(void)
{
shm_init_ns(&init_ipc_ns);
+ return 0;
+}
+
+pure_initcall(ipc_ns_init);
+
+void __init shm_init (void)
+{
ipc_init_proc_interface("sysvipc/shm",
#if BITS_PER_LONG <= 32
" key shmid perms size cpid lpid nattch uid gid cuid cgid atime dtime ctime rss swap\n",