Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6

[safe/jmp/linux-2.6] / fs / mbcache.c

diff --git a/fs/mbcache.c b/fs/mbcache.c
index b002a08..ec88ff3 100644 (file)
--- a/fs/mbcache.c
+++ b/fs/mbcache.c
@@ -85,7 +85,7 @@ struct mb_cache {
 #ifndef MB_CACHE_INDEXES_COUNT
        int                             c_indexes_count;
 #endif
-       kmem_cache_t                    *c_entry_cache;
+       struct kmem_cache                       *c_entry_cache;
        struct list_head                *c_block_hash;
        struct list_head                *c_indexes_hash[0];
 };
@@ -100,7 +100,6 @@ struct mb_cache {
 static LIST_HEAD(mb_cache_list);
 static LIST_HEAD(mb_cache_lru_list);
 static DEFINE_SPINLOCK(mb_cache_spinlock);
-static struct shrinker *mb_shrinker;
 
 static inline int
 mb_cache_indexes(struct mb_cache *cache)
@@ -116,8 +115,12 @@ mb_cache_indexes(struct mb_cache *cache)
  * What the mbcache registers as to get shrunk dynamically.
  */
 
-static int mb_cache_shrink_fn(int nr_to_scan, unsigned int gfp_mask);
+static int mb_cache_shrink_fn(int nr_to_scan, gfp_t gfp_mask);
 
+static struct shrinker mb_cache_shrinker = {
+       .shrink = mb_cache_shrink_fn,
+       .seeks = DEFAULT_SEEKS,
+};
 
 static inline int
 __mb_cache_entry_is_hashed(struct mb_cache_entry *ce)
@@ -126,7 +129,7 @@ __mb_cache_entry_is_hashed(struct mb_cache_entry *ce)
 }
 
 
-static inline void
+static void
 __mb_cache_entry_unhash(struct mb_cache_entry *ce)
 {
        int n;
@@ -139,8 +142,8 @@ __mb_cache_entry_unhash(struct mb_cache_entry *ce)
 }
 
 
-static inline void
-__mb_cache_entry_forget(struct mb_cache_entry *ce, int gfp_mask)
+static void
+__mb_cache_entry_forget(struct mb_cache_entry *ce, gfp_t gfp_mask)
 {
        struct mb_cache *cache = ce->e_cache;
 
@@ -158,8 +161,9 @@ __mb_cache_entry_forget(struct mb_cache_entry *ce, int gfp_mask)
 }
 
 
-static inline void
+static void
 __mb_cache_entry_release_unlock(struct mb_cache_entry *ce)
+       __releases(mb_cache_spinlock)
 {
        /* Wake up all processes queuing for this cache entry. */
        if (ce->e_queued)
@@ -193,7 +197,7 @@ forget:
  * Returns the number of objects which are present in the cache.
  */
 static int
-mb_cache_shrink_fn(int nr_to_scan, unsigned int gfp_mask)
+mb_cache_shrink_fn(int nr_to_scan, gfp_t gfp_mask)
 {
        LIST_HEAD(free_list);
        struct list_head *l, *ltmp;
@@ -288,7 +292,7 @@ mb_cache_create(const char *name, struct mb_cache_op *cache_op,
                        INIT_LIST_HEAD(&cache->c_indexes_hash[m][n]);
        }
        cache->c_entry_cache = kmem_cache_create(name, entry_size, 0,
-               SLAB_RECLAIM_ACCOUNT, NULL, NULL);
+               SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD, NULL);
        if (!cache->c_entry_cache)
                goto fail;
 
@@ -301,8 +305,7 @@ fail:
        if (cache) {
                while (--m >= 0)
                        kfree(cache->c_indexes_hash[m]);
-               if (cache->c_block_hash)
-                       kfree(cache->c_block_hash);
+               kfree(cache->c_block_hash);
                kfree(cache);
        }
        return NULL;
@@ -312,7 +315,7 @@ fail:
 /*
  * mb_cache_shrink()
  *
- * Removes all cache entires of a device from the cache. All cache entries
+ * Removes all cache entries of a device from the cache. All cache entries
  * currently in use cannot be freed, and thus remain in the cache. All others
  * are freed.
  *
@@ -396,13 +399,13 @@ mb_cache_destroy(struct mb_cache *cache)
  * if no more memory was available.
  */
 struct mb_cache_entry *
-mb_cache_entry_alloc(struct mb_cache *cache)
+mb_cache_entry_alloc(struct mb_cache *cache, gfp_t gfp_flags)
 {
        struct mb_cache_entry *ce;
 
-       atomic_inc(&cache->c_entry_count);
-       ce = kmem_cache_alloc(cache->c_entry_cache, GFP_KERNEL);
+       ce = kmem_cache_alloc(cache->c_entry_cache, gfp_flags);
        if (ce) {
+               atomic_inc(&cache->c_entry_count);
                INIT_LIST_HEAD(&ce->e_lru_list);
                INIT_LIST_HEAD(&ce->e_block_list);
                ce->e_cache = cache;
@@ -662,13 +665,13 @@ mb_cache_entry_find_next(struct mb_cache_entry *prev, int index,
 
 static int __init init_mbcache(void)
 {
-       mb_shrinker = set_shrinker(DEFAULT_SEEKS, mb_cache_shrink_fn);
+       register_shrinker(&mb_cache_shrinker);
        return 0;
 }
 
 static void __exit exit_mbcache(void)
 {
-       remove_shrinker(mb_shrinker);
+       unregister_shrinker(&mb_cache_shrinker);
 }
 
 module_init(init_mbcache)