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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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8
fs/dcache.c
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@ -1220,7 +1220,7 @@ void shrink_dcache_parent(struct dentry * parent)
EXPORT_SYMBOL(shrink_dcache_parent);
/*
* Scan `nr' dentries and return the number which remain.
* Scan `sc->nr_slab_to_reclaim' dentries and return the number which remain.
*
* We need to avoid reentering the filesystem if the caller is performing a
* GFP_NOFS allocation attempt. One example deadlock is:
@ -1231,8 +1231,12 @@ EXPORT_SYMBOL(shrink_dcache_parent);
*
* In this case we return -1 to tell the caller that we baled.
*/
static int shrink_dcache_memory(struct shrinker *shrink, int nr, gfp_t gfp_mask)
static int shrink_dcache_memory(struct shrinker *shrink,
struct shrink_control *sc)
{
int nr = sc->nr_to_scan;
gfp_t gfp_mask = sc->gfp_mask;
if (nr) {
if (!(gfp_mask & __GFP_FS))
return -1;