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authorDave Chinner <dchinner@redhat.com>2010-07-19 14:56:17 +1000
committerDave Chinner <david@fromorbit.com>2010-07-19 14:56:17 +1000
commit7f8275d0d660c146de6ee3017e1e2e594c49e820 (patch)
tree884db927118b44102750b5168ee36ef4b8b5cb4e /fs/gfs2
parentd0c6f6258478e1dba532bf7c28e2cd6e1047d3a4 (diff)
mm: add context argument to shrinker callback
The current shrinker implementation requires the registered callback to have global state to work from. This makes it difficult to shrink caches that are not global (e.g. per-filesystem caches). Pass the shrinker structure to the callback so that users can embed the shrinker structure in the context the shrinker needs to operate on and get back to it in the callback via container_of(). Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/gfs2')
-rw-r--r--fs/gfs2/glock.c2
-rw-r--r--fs/gfs2/quota.c2
-rw-r--r--fs/gfs2/quota.h2
3 files changed, 3 insertions, 3 deletions
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index dbab3fdc2582..0898f3ec8212 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -1358,7 +1358,7 @@ void gfs2_glock_complete(struct gfs2_glock *gl, int ret)
}
-static int gfs2_shrink_glock_memory(int nr, gfp_t gfp_mask)
+static int gfs2_shrink_glock_memory(struct shrinker *shrink, int nr, gfp_t gfp_mask)
{
struct gfs2_glock *gl;
int may_demote;
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index b256d6f24288..8f02d3db8f42 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -77,7 +77,7 @@ static LIST_HEAD(qd_lru_list);
static atomic_t qd_lru_count = ATOMIC_INIT(0);
static DEFINE_SPINLOCK(qd_lru_lock);
-int gfs2_shrink_qd_memory(int nr, gfp_t gfp_mask)
+int gfs2_shrink_qd_memory(struct shrinker *shrink, int nr, gfp_t gfp_mask)
{
struct gfs2_quota_data *qd;
struct gfs2_sbd *sdp;
diff --git a/fs/gfs2/quota.h b/fs/gfs2/quota.h
index 195f60c8bd14..e7d236ca48bd 100644
--- a/fs/gfs2/quota.h
+++ b/fs/gfs2/quota.h
@@ -51,7 +51,7 @@ static inline int gfs2_quota_lock_check(struct gfs2_inode *ip)
return ret;
}
-extern int gfs2_shrink_qd_memory(int nr, gfp_t gfp_mask);
+extern int gfs2_shrink_qd_memory(struct shrinker *shrink, int nr, gfp_t gfp_mask);
extern const struct quotactl_ops gfs2_quotactl_ops;
#endif /* __QUOTA_DOT_H__ */