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vmscan: change shrinker API by passing shrink_control struct

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Change each shrinker's API by consolidating the existing parameters into
shrink_control struct.  This will simplify any further features added w/o
touching each file of shrinker.

[akpm@linux-foundation.org: fix build]
[akpm@linux-foundation.org: fix warning]
[kosaki.motohiro@jp.fujitsu.com: fix up new shrinker API]
[akpm@linux-foundation.org: fix xfs warning]
[akpm@linux-foundation.org: update gfs2]
Signed-off-by: Ying Han <yinghan@google.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Acked-by: Pavel Emelyanov <xemul@openvz.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ying Han
2011-05-24 17:12:27 -07:00
committed by Linus Torvalds
parent a09ed5e000
commit 1495f230fa
21 changed files with 95 additions and 61 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
fs/mbcache.c
View File

@@ -90,7 +90,8 @@ static DEFINE_SPINLOCK(mb_cache_spinlock);
* What the mbcache registers as to get shrunk dynamically.
*/
static int mb_cache_shrink_fn(struct shrinker *shrink, int nr_to_scan, gfp_t gfp_mask);
static int mb_cache_shrink_fn(struct shrinker *shrink,
struct shrink_control *sc);
static struct shrinker mb_cache_shrinker = {
.shrink = mb_cache_shrink_fn,
@@ -156,18 +157,19 @@ __mb_cache_entry_release_unlock(struct mb_cache_entry *ce)
* gets low.
*
* @shrink: (ignored)
* @nr_to_scan: Number of objects to scan
* @gfp_mask: (ignored)
* @sc: shrink_control passed from reclaim
*
* Returns the number of objects which are present in the cache.
*/
static int
mb_cache_shrink_fn(struct shrinker *shrink, int nr_to_scan, gfp_t gfp_mask)
mb_cache_shrink_fn(struct shrinker *shrink, struct shrink_control *sc)
{
LIST_HEAD(free_list);
struct mb_cache *cache;
struct mb_cache_entry *entry, *tmp;
int count = 0;
int nr_to_scan = sc->nr_to_scan;
gfp_t gfp_mask = sc->gfp_mask;
mb_debug("trying to free %d entries", nr_to_scan);
spin_lock(&mb_cache_spinlock);