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(parent: 215e262) | patch
percpu-refcount: Don't use silly cmpxchg()
authorKent Overstreet <koverstreet@google.com>
Mon, 3 Jun 2013 23:02:29 +0000 (16:02 -0700)
committerTejun Heo <tj@kernel.org>
Mon, 3 Jun 2013 23:04:04 +0000 (16:04 -0700)
commitc1ae6e9b4db00023b9caed72af49a93abad46452
tree3bd3a5c78af7a7a18d6f390f651b8f5dbaba4c0btree | snapshot
parent215e262f2aeba378aa192da07c30770f9925a4bfcommit | diff
percpu-refcount: Don't use silly cmpxchg()

The cmpxchg() was just to ensure the debug check didn't race, which was
a bit excessive. The caller is supposed to do the appropriate
synchronization, which means percpu_ref_kill() can just do a simple
store.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
lib/percpu-refcount.c diff | blob | history
Domain: System / Uncategorized;