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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.

[[email protected]: fix build]
[[email protected]: fix warning]
[[email protected]: fix up new shrinker API]
[[email protected]: fix xfs warning]
[[email protected]: update gfs2]
Signed-off-by: Ying Han <[email protected]>
Cc: KOSAKI Motohiro <[email protected]>
Cc: Minchan Kim <[email protected]>
Acked-by: Pavel Emelyanov <[email protected]>
Cc: KAMEZAWA Hiroyuki <[email protected]>
Cc: Mel Gorman <[email protected]>
Acked-by: Rik van Riel <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Steven Whitehouse <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Ying Han 2011-05-24 17:12:27 -07:00 • committed by Linus Torvalds
commit 1495f230fa
21 changed files with 95 additions and 61 deletions
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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 @@ forget:
* 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);