tree 4e8646ba72b14f2bdd94802d42684c00c1a7507c
parent 9637a5efd4fbe36164c5ce7f6a0ee68b2bf22b7f
author Hugh Dickins <hugh@veritas.com> 1151053424 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1151073771 -0700

[PATCH] swapoff: use atomic_inc_not_zero() on mm_users

Now that we have atomic_inc_not_zero, it's more elegant for try_to_unuse to
use that on mm_users: doesn't actually matter at present, but safer to be
sure that once mm_users has gone to 0, nothing raises it for an instant.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>