vmscan: use atomic-long for shrinker batching

Use atomic-long operations instead of looping around cmpxchg().

[akpm@linux-foundation.org: massage atomic.h inclusions]
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Dave Chinner <david@fromorbit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Konstantin Khlebnikov
2011-12-08 14:33:54 -08:00
committed by Linus Torvalds
parent 635697c663
commit 83aeeada7c
4 changed files with 10 additions and 12 deletions

View File

@@ -35,7 +35,7 @@ struct shrinker {
/* These are for internal use */
struct list_head list;
long nr; /* objs pending delete */
atomic_long_t nr_in_batch; /* objs pending delete */
};
#define DEFAULT_SEEKS 2 /* A good number if you don't know better. */
extern void register_shrinker(struct shrinker *);