fs: convert fs shrinkers to new scan/count API

[pandora-kernel.git] / fs / nfs / dir.c

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 813ef25..de434f3 100644 (file)
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -2006,17 +2006,18 @@ static void nfs_access_free_list(struct list_head *head)
        }
 }
 
-int nfs_access_cache_shrinker(struct shrinker *shrink,
-                             struct shrink_control *sc)
+unsigned long
+nfs_access_cache_scan(struct shrinker *shrink, struct shrink_control *sc)
 {
        LIST_HEAD(head);
        struct nfs_inode *nfsi, *next;
        struct nfs_access_entry *cache;
        int nr_to_scan = sc->nr_to_scan;
        gfp_t gfp_mask = sc->gfp_mask;
+       long freed = 0;
 
        if ((gfp_mask & GFP_KERNEL) != GFP_KERNEL)
-               return (nr_to_scan == 0) ? 0 : -1;
+               return SHRINK_STOP;
 
        spin_lock(&nfs_access_lru_lock);
        list_for_each_entry_safe(nfsi, next, &nfs_access_lru_list, access_cache_inode_lru) {
@@ -2032,6 +2033,7 @@ int nfs_access_cache_shrinker(struct shrinker *shrink,
                                struct nfs_access_entry, lru);
                list_move(&cache->lru, &head);
                rb_erase(&cache->rb_node, &nfsi->access_cache);
+               freed++;
                if (!list_empty(&nfsi->access_cache_entry_lru))
                        list_move_tail(&nfsi->access_cache_inode_lru,
                                        &nfs_access_lru_list);
@@ -2046,6 +2048,12 @@ remove_lru_entry:
        }
        spin_unlock(&nfs_access_lru_lock);
        nfs_access_free_list(&head);
+       return freed;
+}
+
+unsigned long
+nfs_access_cache_count(struct shrinker *shrink, struct shrink_control *sc)
+{
        return vfs_pressure_ratio(atomic_long_read(&nfs_access_nr_entries));
 }