diff options
| author | Dave Chinner <dchinner@redhat.com> | 2011-07-08 06:14:37 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-07-20 07:44:32 +0200 |
| commit | e9299f5058595a655c3b207cda9635e28b9197e6 (patch) | |
| tree | b31a4dc5cab98ee1701313f45e92e583c2d76f63 /include | |
| parent | vmscan: reduce wind up shrinker->nr when shrinker can't do work (diff) | |
| download | linux-e9299f5058595a655c3b207cda9635e28b9197e6.tar.xz linux-e9299f5058595a655c3b207cda9635e28b9197e6.zip | |
vmscan: add customisable shrinker batch size
For shrinkers that have their own cond_resched* calls, having
shrink_slab break the work down into small batches is not
paticularly efficient. Add a custom batchsize field to the struct
shrinker so that shrinkers can use a larger batch size if they
desire.
A value of zero (uninitialised) means "use the default", so
behaviour is unchanged by this patch.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 9670f71d7be9..9b9777ac726d 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1150,6 +1150,7 @@ struct shrink_control { struct shrinker { int (*shrink)(struct shrinker *, struct shrink_control *sc); int seeks; /* seeks to recreate an obj */ + long batch; /* reclaim batch size, 0 = default */ /* These are for internal use */ struct list_head list; |