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| author |   Heesub Shin <heesub.shin@samsung.com> | 2014-12-12 16:57:21 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-13 12:42:51 -0800 |
| commit | 1dd61aa31cb5a64fe294c32424d9602fdb7317b0 (patch) | |
| tree | fd252c79e8922a9124cbf0e7ec53eed091c48ff2 /mm/zbud.c | |
| parent | mm/zswap: delete unnecessary check before calling free_percpu() (diff) | |
| download | linux-dev-1dd61aa31cb5a64fe294c32424d9602fdb7317b0.tar.xz linux-dev-1dd61aa31cb5a64fe294c32424d9602fdb7317b0.zip | |
mm/zbud: init user ops only when it is needed
When zbud is initialized through the zpool wrapper, pool->ops which
points to user-defined operations is always set regardless of whether it
is specified from the upper layer. This causes zbud_reclaim_page() to
iterate its loop for evicting pool pages out without any gain.
This patch sets the user-defined ops only when it is needed, so that
zbud_reclaim_page() can bail out the reclamation loop earlier if there
is no user-defined operations specified.
Signed-off-by: Heesub Shin <heesub.shin@samsung.com>
Acked-by: Dan Streetman <ddstreet@ieee.org>
Cc: Seth Jennings <sjennings@variantweb.net>
Cc: Sunae Seo <sunae.seo@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/zbud.c')
| -rw-r--r-- | mm/zbud.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/zbud.c b/mm/zbud.c index ec71b37fb06c..4e387bea702e 100644 --- a/mm/zbud.c +++ b/mm/zbud.c @@ -132,7 +132,7 @@ static struct zbud_ops zbud_zpool_ops = { static void *zbud_zpool_create(gfp_t gfp, struct zpool_ops *zpool_ops) { - return zbud_create_pool(gfp, &zbud_zpool_ops); + return zbud_create_pool(gfp, zpool_ops ? &zbud_zpool_ops : NULL); } static void zbud_zpool_destroy(void *pool) |