tree f08c7e26b19687d26b29082e50101daf2e5a4b75
parent 7fd93cf30c531fd8b014e827e7a85fcfc010b2c6
author Andrew Morton <akpm@osdl.org> 1131353880 -0800
committer Linus Torvalds <torvalds@g5.osdl.org> 1131378804 -0800

[PATCH] slab: don't BUG on duplicated cache

slab presently goes BUG if someone tries to register an already-registered
cache.

But this can happen if the user accidentally loads a module which is already
statically linked into the kernel.  Nuking the kernel is rather a harsh
reaction.

Change it into a warning, and just fail the kmem_cache_alloc() attempt.  If
the module is well-behaved, the modprobe will fail and all is well.

Notes:

- Swaps the ranking of cache_chain_sem and lock_cpu_hotplug().  Doesn't seem
  important.

Acked-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>