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[PATCH] swapoff: use atomic_inc_not_zero() on mm_users
authorHugh Dickins <hugh@veritas.com>
Fri, 23 Jun 2006 09:03:44 +0000 (02:03 -0700)
committerLinus Torvalds <torvalds@g5.osdl.org>
Fri, 23 Jun 2006 14:42:51 +0000 (07:42 -0700)
commit70af7c5c6492ef6ad137dbff6c4568c73edbcaf0
tree4e8646ba72b14f2bdd94802d42684c00c1a7507ctree | snapshot
parent9637a5efd4fbe36164c5ce7f6a0ee68b2bf22b7fcommit | diff
[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>
mm/swapfile.c diff | blob | history
Domain: System / Kernel;