SLAB_PANIC more (proc, posix-timers, shmem)

These aren't modular, so SLAB_PANIC is OK.

Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 7cffa43..99ca004 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -119,10 +119,8 @@
 	proc_inode_cachep = kmem_cache_create("proc_inode_cache",
 					     sizeof(struct proc_inode),
 					     0, (SLAB_RECLAIM_ACCOUNT|
-						SLAB_MEM_SPREAD),
+						SLAB_MEM_SPREAD|SLAB_PANIC),
 					     init_once);
-	if (proc_inode_cachep == NULL)
-		return -ENOMEM;
 	return 0;
 }