mbcache2: rename to mbcache

Since old mbcache code is gone, let's rename new code to mbcache since
number 2 is now meaningless. This is just a mechanical replacement.
Signed-off-by: NJan Kara <jack@suse.cz>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>

fs/Makefile

@@ -41,7 +41,7 @@ obj-$(CONFIG_COMPAT_BINFMT_ELF)	+= compat_binfmt_elf.o
 obj-$(CONFIG_BINFMT_ELF_FDPIC)	+= binfmt_elf_fdpic.o
 obj-$(CONFIG_BINFMT_FLAT)	+= binfmt_flat.o
 
-obj-$(CONFIG_FS_MBCACHE)	+= mbcache2.o
+obj-$(CONFIG_FS_MBCACHE)	+= mbcache.o
 obj-$(CONFIG_FS_POSIX_ACL)	+= posix_acl.o
 obj-$(CONFIG_NFS_COMMON)	+= nfs_common/
 obj-$(CONFIG_COREDUMP)		+= coredump.o

fs/ext2/ext2.h

@@ -61,7 +61,7 @@ struct ext2_block_alloc_info {
 #define rsv_start rsv_window._rsv_start
 #define rsv_end rsv_window._rsv_end
 
-struct mb2_cache;
+struct mb_cache;
 
 /*
  * second extended-fs super-block data in memory
@@ -113,7 +113,7 @@ struct ext2_sb_info {
 	 * of the mount options.
 	 */
 	spinlock_t s_lock;
-	struct mb2_cache *s_mb_cache;
+	struct mb_cache *s_mb_cache;
 };
 
 static inline spinlock_t *

fs/ext2/xattr.c

@@ -56,7 +56,7 @@
 #include <linux/buffer_head.h>
 #include <linux/init.h>
 #include <linux/slab.h>
-#include <linux/mbcache2.h>
+#include <linux/mbcache.h>
 #include <linux/quotaops.h>
 #include <linux/rwsem.h>
 #include <linux/security.h>
@@ -90,7 +90,7 @@
 static int ext2_xattr_set2(struct inode *, struct buffer_head *,
 			   struct ext2_xattr_header *);
 
-static int ext2_xattr_cache_insert(struct mb2_cache *, struct buffer_head *);
+static int ext2_xattr_cache_insert(struct mb_cache *, struct buffer_head *);
 static struct buffer_head *ext2_xattr_cache_find(struct inode *,
 						 struct ext2_xattr_header *);
 static void ext2_xattr_rehash(struct ext2_xattr_header *,
@@ -150,7 +150,7 @@ ext2_xattr_get(struct inode *inode, int name_index, const char *name,
 	size_t name_len, size;
 	char *end;
 	int error;
-	struct mb2_cache *ext2_mb_cache = EXT2_SB(inode->i_sb)->s_mb_cache;
+	struct mb_cache *ext2_mb_cache = EXT2_SB(inode->i_sb)->s_mb_cache;
 
 	ea_idebug(inode, "name=%d.%s, buffer=%p, buffer_size=%ld",
 		  name_index, name, buffer, (long)buffer_size);
@@ -246,7 +246,7 @@ ext2_xattr_list(struct dentry *dentry, char *buffer, size_t buffer_size)
 	char *end;
 	size_t rest = buffer_size;
 	int error;
-	struct mb2_cache *ext2_mb_cache = EXT2_SB(inode->i_sb)->s_mb_cache;
+	struct mb_cache *ext2_mb_cache = EXT2_SB(inode->i_sb)->s_mb_cache;
 
 	ea_idebug(inode, "buffer=%p, buffer_size=%ld",
 		  buffer, (long)buffer_size);
@@ -493,8 +493,8 @@ bad_block:		ext2_error(sb, "ext2_xattr_set",
 			 * This must happen under buffer lock for
 			 * ext2_xattr_set2() to reliably detect modified block
 			 */
-			mb2_cache_entry_delete_block(EXT2_SB(sb)->s_mb_cache,
-						     hash, bh->b_blocknr);
+			mb_cache_entry_delete_block(EXT2_SB(sb)->s_mb_cache,
+						    hash, bh->b_blocknr);
 
 			/* keep the buffer locked while modifying it. */
 		} else {
@@ -627,7 +627,7 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
 	struct super_block *sb = inode->i_sb;
 	struct buffer_head *new_bh = NULL;
 	int error;
-	struct mb2_cache *ext2_mb_cache = EXT2_SB(sb)->s_mb_cache;
+	struct mb_cache *ext2_mb_cache = EXT2_SB(sb)->s_mb_cache;
 
 	if (header) {
 		new_bh = ext2_xattr_cache_find(inode, header);
@@ -721,8 +721,8 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
 			 * This must happen under buffer lock for
 			 * ext2_xattr_set2() to reliably detect freed block
 			 */
-			mb2_cache_entry_delete_block(ext2_mb_cache,
-						     hash, old_bh->b_blocknr);
+			mb_cache_entry_delete_block(ext2_mb_cache,
+						    hash, old_bh->b_blocknr);
 			/* Free the old block. */
 			ea_bdebug(old_bh, "freeing");
 			ext2_free_blocks(inode, old_bh->b_blocknr, 1);
@@ -786,8 +786,8 @@ ext2_xattr_delete_inode(struct inode *inode)
 		 * This must happen under buffer lock for ext2_xattr_set2() to
 		 * reliably detect freed block
 		 */
-		mb2_cache_entry_delete_block(EXT2_SB(inode->i_sb)->s_mb_cache,
-					     hash, bh->b_blocknr);
+		mb_cache_entry_delete_block(EXT2_SB(inode->i_sb)->s_mb_cache,
+					    hash, bh->b_blocknr);
 		ext2_free_blocks(inode, EXT2_I(inode)->i_file_acl, 1);
 		get_bh(bh);
 		bforget(bh);
@@ -818,12 +818,12 @@ ext2_xattr_delete_inode(struct inode *inode)
  * Returns 0, or a negative error number on failure.
  */
 static int
-ext2_xattr_cache_insert(struct mb2_cache *cache, struct buffer_head *bh)
+ext2_xattr_cache_insert(struct mb_cache *cache, struct buffer_head *bh)
 {
 	__u32 hash = le32_to_cpu(HDR(bh)->h_hash);
 	int error;
 
-	error = mb2_cache_entry_create(cache, GFP_NOFS, hash, bh->b_blocknr);
+	error = mb_cache_entry_create(cache, GFP_NOFS, hash, bh->b_blocknr);
 	if (error) {
 		if (error == -EBUSY) {
 			ea_bdebug(bh, "already in cache (%d cache entries)",
@@ -887,14 +887,14 @@ static struct buffer_head *
 ext2_xattr_cache_find(struct inode *inode, struct ext2_xattr_header *header)
 {
 	__u32 hash = le32_to_cpu(header->h_hash);
-	struct mb2_cache_entry *ce;
-	struct mb2_cache *ext2_mb_cache = EXT2_SB(inode->i_sb)->s_mb_cache;
+	struct mb_cache_entry *ce;
+	struct mb_cache *ext2_mb_cache = EXT2_SB(inode->i_sb)->s_mb_cache;
 
 	if (!header->h_hash)
 		return NULL;  /* never share */
 	ea_idebug(inode, "looking for cached blocks [%x]", (int)hash);
 again:
-	ce = mb2_cache_entry_find_first(ext2_mb_cache, hash);
+	ce = mb_cache_entry_find_first(ext2_mb_cache, hash);
 	while (ce) {
 		struct buffer_head *bh;
 
@@ -915,7 +915,7 @@ ext2_xattr_cache_find(struct inode *inode, struct ext2_xattr_header *header)
 			 * entry is still hashed is reliable.
 			 */
 			if (hlist_bl_unhashed(&ce->e_hash_list)) {
-				mb2_cache_entry_put(ext2_mb_cache, ce);
+				mb_cache_entry_put(ext2_mb_cache, ce);
 				unlock_buffer(bh);
 				brelse(bh);
 				goto again;
@@ -928,14 +928,14 @@ ext2_xattr_cache_find(struct inode *inode, struct ext2_xattr_header *header)
 			} else if (!ext2_xattr_cmp(header, HDR(bh))) {
 				ea_bdebug(bh, "b_count=%d",
 					  atomic_read(&(bh->b_count)));
-				mb2_cache_entry_touch(ext2_mb_cache, ce);
-				mb2_cache_entry_put(ext2_mb_cache, ce);
+				mb_cache_entry_touch(ext2_mb_cache, ce);
+				mb_cache_entry_put(ext2_mb_cache, ce);
 				return bh;
 			}
 			unlock_buffer(bh);
 			brelse(bh);
 		}
-		ce = mb2_cache_entry_find_next(ext2_mb_cache, ce);
+		ce = mb_cache_entry_find_next(ext2_mb_cache, ce);
 	}
 	return NULL;
 }
@@ -1010,13 +1010,13 @@ static void ext2_xattr_rehash(struct ext2_xattr_header *header,
 
 #define HASH_BUCKET_BITS 10
 
-struct mb2_cache *ext2_xattr_create_cache(void)
+struct mb_cache *ext2_xattr_create_cache(void)
 {
-	return mb2_cache_create(HASH_BUCKET_BITS);
+	return mb_cache_create(HASH_BUCKET_BITS);
 }
 
-void ext2_xattr_destroy_cache(struct mb2_cache *cache)
+void ext2_xattr_destroy_cache(struct mb_cache *cache)
 {
 	if (cache)
-		mb2_cache_destroy(cache);
+		mb_cache_destroy(cache);
 }

fs/ext2/xattr.h

@@ -53,7 +53,7 @@ struct ext2_xattr_entry {
 #define EXT2_XATTR_SIZE(size) \
 	(((size) + EXT2_XATTR_ROUND) & ~EXT2_XATTR_ROUND)
 
-struct mb2_cache;
+struct mb_cache;
 
 # ifdef CONFIG_EXT2_FS_XATTR
 
@@ -68,8 +68,8 @@ extern int ext2_xattr_set(struct inode *, int, const char *, const void *, size_
 
 extern void ext2_xattr_delete_inode(struct inode *);
 
-extern struct mb2_cache *ext2_xattr_create_cache(void);
-extern void ext2_xattr_destroy_cache(struct mb2_cache *cache);
+extern struct mb_cache *ext2_xattr_create_cache(void);
+extern void ext2_xattr_destroy_cache(struct mb_cache *cache);
 
 extern const struct xattr_handler *ext2_xattr_handlers[];
 
@@ -94,7 +94,7 @@ ext2_xattr_delete_inode(struct inode *inode)
 {
 }
 
-static inline void ext2_xattr_destroy_cache(struct mb2_cache *cache)
+static inline void ext2_xattr_destroy_cache(struct mb_cache *cache)
 {
 }
 

fs/ext4/ext4.h

@@ -1468,7 +1468,7 @@ struct ext4_sb_info {
 	struct list_head s_es_list;	/* List of inodes with reclaimable extents */
 	long s_es_nr_inode;
 	struct ext4_es_stats s_es_stats;
-	struct mb2_cache *s_mb_cache;
+	struct mb_cache *s_mb_cache;
 	spinlock_t s_es_lock ____cacheline_aligned_in_smp;
 
 	/* Ratelimit ext4 messages. */

fs/ext4/xattr.c

@@ -53,7 +53,7 @@
 #include <linux/init.h>
 #include <linux/fs.h>
 #include <linux/slab.h>
-#include <linux/mbcache2.h>
+#include <linux/mbcache.h>
 #include <linux/quotaops.h>
 #include "ext4_jbd2.h"
 #include "ext4.h"
@@ -78,10 +78,10 @@
 # define ea_bdebug(bh, fmt, ...)	no_printk(fmt, ##__VA_ARGS__)
 #endif
 
-static void ext4_xattr_cache_insert(struct mb2_cache *, struct buffer_head *);
+static void ext4_xattr_cache_insert(struct mb_cache *, struct buffer_head *);
 static struct buffer_head *ext4_xattr_cache_find(struct inode *,
 						 struct ext4_xattr_header *,
-						 struct mb2_cache_entry **);
+						 struct mb_cache_entry **);
 static void ext4_xattr_rehash(struct ext4_xattr_header *,
 			      struct ext4_xattr_entry *);
 static int ext4_xattr_list(struct dentry *dentry, char *buffer,
@@ -276,7 +276,7 @@ ext4_xattr_block_get(struct inode *inode, int name_index, const char *name,
 	struct ext4_xattr_entry *entry;
 	size_t size;
 	int error;
-	struct mb2_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode);
+	struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode);
 
 	ea_idebug(inode, "name=%d.%s, buffer=%p, buffer_size=%ld",
 		  name_index, name, buffer, (long)buffer_size);
@@ -428,7 +428,7 @@ ext4_xattr_block_list(struct dentry *dentry, char *buffer, size_t buffer_size)
 	struct inode *inode = d_inode(dentry);
 	struct buffer_head *bh = NULL;
 	int error;
-	struct mb2_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode);
+	struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode);
 
 	ea_idebug(inode, "buffer=%p, buffer_size=%ld",
 		  buffer, (long)buffer_size);
@@ -561,8 +561,8 @@ ext4_xattr_release_block(handle_t *handle, struct inode *inode,
 		 * This must happen under buffer lock for
 		 * ext4_xattr_block_set() to reliably detect freed block
 		 */
-		mb2_cache_entry_delete_block(EXT4_GET_MB_CACHE(inode), hash,
-					     bh->b_blocknr);
+		mb_cache_entry_delete_block(EXT4_GET_MB_CACHE(inode), hash,
+					    bh->b_blocknr);
 		get_bh(bh);
 		unlock_buffer(bh);
 		ext4_free_blocks(handle, inode, bh, 0, 1,
@@ -782,9 +782,9 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
 	struct super_block *sb = inode->i_sb;
 	struct buffer_head *new_bh = NULL;
 	struct ext4_xattr_search *s = &bs->s;
-	struct mb2_cache_entry *ce = NULL;
+	struct mb_cache_entry *ce = NULL;
 	int error = 0;
-	struct mb2_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode);
+	struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode);
 
 #define header(x) ((struct ext4_xattr_header *)(x))
 
@@ -805,8 +805,8 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
 			 * ext4_xattr_block_set() to reliably detect modified
 			 * block
 			 */
-			mb2_cache_entry_delete_block(ext4_mb_cache, hash,
-						     bs->bh->b_blocknr);
+			mb_cache_entry_delete_block(ext4_mb_cache, hash,
+						    bs->bh->b_blocknr);
 			ea_bdebug(bs->bh, "modifying in-place");
 			error = ext4_xattr_set_entry(i, s);
 			if (!error) {
@@ -904,7 +904,7 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
 							 EXT4_C2B(EXT4_SB(sb),
 								  1));
 					brelse(new_bh);
-					mb2_cache_entry_put(ext4_mb_cache, ce);
+					mb_cache_entry_put(ext4_mb_cache, ce);
 					ce = NULL;
 					new_bh = NULL;
 					goto inserted;
@@ -919,8 +919,8 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
 				if (error)
 					goto cleanup_dquot;
 			}
-			mb2_cache_entry_touch(ext4_mb_cache, ce);
-			mb2_cache_entry_put(ext4_mb_cache, ce);
+			mb_cache_entry_touch(ext4_mb_cache, ce);
+			mb_cache_entry_put(ext4_mb_cache, ce);
 			ce = NULL;
 		} else if (bs->bh && s->base == bs->bh->b_data) {
 			/* We were modifying this block in-place. */
@@ -985,7 +985,7 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
 
 cleanup:
 	if (ce)
-		mb2_cache_entry_put(ext4_mb_cache, ce);
+		mb_cache_entry_put(ext4_mb_cache, ce);
 	brelse(new_bh);
 	if (!(bs->bh && s->base == bs->bh->b_data))
 		kfree(s->base);
@@ -1546,13 +1546,13 @@ ext4_xattr_delete_inode(handle_t *handle, struct inode *inode)
  * Returns 0, or a negative error number on failure.
  */
 static void
-ext4_xattr_cache_insert(struct mb2_cache *ext4_mb_cache, struct buffer_head *bh)
+ext4_xattr_cache_insert(struct mb_cache *ext4_mb_cache, struct buffer_head *bh)
 {
 	__u32 hash = le32_to_cpu(BHDR(bh)->h_hash);
 	int error;
 
-	error = mb2_cache_entry_create(ext4_mb_cache, GFP_NOFS, hash,
-				       bh->b_blocknr);
+	error = mb_cache_entry_create(ext4_mb_cache, GFP_NOFS, hash,
+				      bh->b_blocknr);
 	if (error) {
 		if (error == -EBUSY)
 			ea_bdebug(bh, "already in cache");
@@ -1610,16 +1610,16 @@ ext4_xattr_cmp(struct ext4_xattr_header *header1,
  */
 static struct buffer_head *
 ext4_xattr_cache_find(struct inode *inode, struct ext4_xattr_header *header,
-		      struct mb2_cache_entry **pce)
+		      struct mb_cache_entry **pce)
 {
 	__u32 hash = le32_to_cpu(header->h_hash);
-	struct mb2_cache_entry *ce;
-	struct mb2_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode);
+	struct mb_cache_entry *ce;
+	struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode);
 
 	if (!header->h_hash)
 		return NULL;  /* never share */
 	ea_idebug(inode, "looking for cached blocks [%x]", (int)hash);
-	ce = mb2_cache_entry_find_first(ext4_mb_cache, hash);
+	ce = mb_cache_entry_find_first(ext4_mb_cache, hash);
 	while (ce) {
 		struct buffer_head *bh;
 
@@ -1638,7 +1638,7 @@ ext4_xattr_cache_find(struct inode *inode, struct ext4_xattr_header *header,
 			return bh;
 		}
 		brelse(bh);
-		ce = mb2_cache_entry_find_next(ext4_mb_cache, ce);
+		ce = mb_cache_entry_find_next(ext4_mb_cache, ce);
 	}
 	return NULL;
 }
@@ -1713,15 +1713,15 @@ static void ext4_xattr_rehash(struct ext4_xattr_header *header,
 
 #define	HASH_BUCKET_BITS	10
 
-struct mb2_cache *
+struct mb_cache *
 ext4_xattr_create_cache(void)
 {
-	return mb2_cache_create(HASH_BUCKET_BITS);
+	return mb_cache_create(HASH_BUCKET_BITS);
 }
 
-void ext4_xattr_destroy_cache(struct mb2_cache *cache)
+void ext4_xattr_destroy_cache(struct mb_cache *cache)
 {
 	if (cache)
-		mb2_cache_destroy(cache);
+		mb_cache_destroy(cache);
 }
 

fs/ext4/xattr.h

@@ -123,8 +123,8 @@ extern int ext4_xattr_ibody_inline_set(handle_t *handle, struct inode *inode,
 				       struct ext4_xattr_info *i,
 				       struct ext4_xattr_ibody_find *is);
 
-extern struct mb2_cache *ext4_xattr_create_cache(void);
-extern void ext4_xattr_destroy_cache(struct mb2_cache *);
+extern struct mb_cache *ext4_xattr_create_cache(void);
+extern void ext4_xattr_destroy_cache(struct mb_cache *);
 
 #ifdef CONFIG_EXT4_FS_SECURITY
 extern int ext4_init_security(handle_t *handle, struct inode *inode,

fs/mbcache2.c → fs/mbcache.c

@@ -5,12 +5,12 @@
 #include <linux/module.h>
 #include <linux/sched.h>
 #include <linux/workqueue.h>
-#include <linux/mbcache2.h>
+#include <linux/mbcache.h>
 
 /*
  * Mbcache is a simple key-value store. Keys need not be unique, however
  * key-value pairs are expected to be unique (we use this fact in
- * mb2_cache_entry_delete_block()).
+ * mb_cache_entry_delete_block()).
  *
  * Ext2 and ext4 use this cache for deduplication of extended attribute blocks.
  * They use hash of a block contents as a key and block number as a value.
@@ -23,7 +23,7 @@
  * size hash table is used for fast key lookups.
  */
 
-struct mb2_cache {
+struct mb_cache {
 	/* Hash table of entries */
 	struct hlist_bl_head	*c_hash;
 	/* log2 of hash table size */
@@ -40,29 +40,29 @@ struct mb2_cache {
 	struct work_struct	c_shrink_work;
 };
 
-static struct kmem_cache *mb2_entry_cache;
+static struct kmem_cache *mb_entry_cache;
 
-static unsigned long mb2_cache_shrink(struct mb2_cache *cache,
-				      unsigned int nr_to_scan);
+static unsigned long mb_cache_shrink(struct mb_cache *cache,
+				     unsigned int nr_to_scan);
 
-static inline bool mb2_cache_entry_referenced(struct mb2_cache_entry *entry)
+static inline bool mb_cache_entry_referenced(struct mb_cache_entry *entry)
 {
 	return entry->_e_hash_list_head & 1;
 }
 
-static inline void mb2_cache_entry_set_referenced(struct mb2_cache_entry *entry)
+static inline void mb_cache_entry_set_referenced(struct mb_cache_entry *entry)
 {
 	entry->_e_hash_list_head |= 1;
 }
 
-static inline void mb2_cache_entry_clear_referenced(
-					struct mb2_cache_entry *entry)
+static inline void mb_cache_entry_clear_referenced(
+					struct mb_cache_entry *entry)
 {
 	entry->_e_hash_list_head &= ~1;
 }
 
-static inline struct hlist_bl_head *mb2_cache_entry_head(
-					struct mb2_cache_entry *entry)
+static inline struct hlist_bl_head *mb_cache_entry_head(
+					struct mb_cache_entry *entry)
 {
 	return (struct hlist_bl_head *)
 			(entry->_e_hash_list_head & ~1);
@@ -75,7 +75,7 @@ static inline struct hlist_bl_head *mb2_cache_entry_head(
 #define SYNC_SHRINK_BATCH 64
 
 /*
- * mb2_cache_entry_create - create entry in cache
+ * mb_cache_entry_create - create entry in cache
  * @cache - cache where the entry should be created
  * @mask - gfp mask with which the entry should be allocated
  * @key - key of the entry
@@ -85,10 +85,10 @@ static inline struct hlist_bl_head *mb2_cache_entry_head(
  * block @block. The function returns -EBUSY if entry with the same key
  * and for the same block already exists in cache. Otherwise 0 is returned.
  */
-int mb2_cache_entry_create(struct mb2_cache *cache, gfp_t mask, u32 key,
-			   sector_t block)
+int mb_cache_entry_create(struct mb_cache *cache, gfp_t mask, u32 key,
+			  sector_t block)
 {
-	struct mb2_cache_entry *entry, *dup;
+	struct mb_cache_entry *entry, *dup;
 	struct hlist_bl_node *dup_node;
 	struct hlist_bl_head *head;
 
@@ -97,9 +97,9 @@ int mb2_cache_entry_create(struct mb2_cache *cache, gfp_t mask, u32 key,
 		schedule_work(&cache->c_shrink_work);
 	/* Do some sync reclaim if background reclaim cannot keep up */
 	if (cache->c_entry_count >= 2*cache->c_max_entries)
-		mb2_cache_shrink(cache, SYNC_SHRINK_BATCH);
+		mb_cache_shrink(cache, SYNC_SHRINK_BATCH);
 
-	entry = kmem_cache_alloc(mb2_entry_cache, mask);
+	entry = kmem_cache_alloc(mb_entry_cache, mask);
 	if (!entry)
 		return -ENOMEM;
 
@@ -114,7 +114,7 @@ int mb2_cache_entry_create(struct mb2_cache *cache, gfp_t mask, u32 key,
 	hlist_bl_for_each_entry(dup, dup_node, head, e_hash_list) {
 		if (dup->e_key == key && dup->e_block == block) {
 			hlist_bl_unlock(head);
-			kmem_cache_free(mb2_entry_cache, entry);
+			kmem_cache_free(mb_entry_cache, entry);
 			return -EBUSY;
 		}
 	}
@@ -130,24 +130,24 @@ int mb2_cache_entry_create(struct mb2_cache *cache, gfp_t mask, u32 key,
 
 	return 0;
 }
-EXPORT_SYMBOL(mb2_cache_entry_create);
+EXPORT_SYMBOL(mb_cache_entry_create);
 
-void __mb2_cache_entry_free(struct mb2_cache_entry *entry)
+void __mb_cache_entry_free(struct mb_cache_entry *entry)
 {
-	kmem_cache_free(mb2_entry_cache, entry);
+	kmem_cache_free(mb_entry_cache, entry);
 }
-EXPORT_SYMBOL(__mb2_cache_entry_free);
+EXPORT_SYMBOL(__mb_cache_entry_free);
 
-static struct mb2_cache_entry *__entry_find(struct mb2_cache *cache,
-					    struct mb2_cache_entry *entry,
-					    u32 key)
+static struct mb_cache_entry *__entry_find(struct mb_cache *cache,
+					   struct mb_cache_entry *entry,
+					   u32 key)
 {
-	struct mb2_cache_entry *old_entry = entry;
+	struct mb_cache_entry *old_entry = entry;
 	struct hlist_bl_node *node;
 	struct hlist_bl_head *head;
 
 	if (entry)
-		head = mb2_cache_entry_head(entry);
+		head = mb_cache_entry_head(entry);
 	else
 		head = &cache->c_hash[hash_32(key, cache->c_bucket_bits)];
 	hlist_bl_lock(head);
@@ -156,7 +156,7 @@ static struct mb2_cache_entry *__entry_find(struct mb2_cache *cache,
 	else
 		node = hlist_bl_first(head);
 	while (node) {
-		entry = hlist_bl_entry(node, struct mb2_cache_entry,
+		entry = hlist_bl_entry(node, struct mb_cache_entry,
 				       e_hash_list);
 		if (entry->e_key == key) {
 			atomic_inc(&entry->e_refcnt);
@@ -168,28 +168,28 @@ static struct mb2_cache_entry *__entry_find(struct mb2_cache *cache,
 out:
 	hlist_bl_unlock(head);
 	if (old_entry)
-		mb2_cache_entry_put(cache, old_entry);
+		mb_cache_entry_put(cache, old_entry);
 
 	return entry;
 }
 
 /*
- * mb2_cache_entry_find_first - find the first entry in cache with given key
+ * mb_cache_entry_find_first - find the first entry in cache with given key
  * @cache: cache where we should search
  * @key: key to look for
  *
  * Search in @cache for entry with key @key. Grabs reference to the first
  * entry found and returns the entry.
  */
-struct mb2_cache_entry *mb2_cache_entry_find_first(struct mb2_cache *cache,
-						   u32 key)
+struct mb_cache_entry *mb_cache_entry_find_first(struct mb_cache *cache,
+						 u32 key)
 {
 	return __entry_find(cache, NULL, key);
 }
-EXPORT_SYMBOL(mb2_cache_entry_find_first);
+EXPORT_SYMBOL(mb_cache_entry_find_first);
 
 /*
- * mb2_cache_entry_find_next - find next entry in cache with the same
+ * mb_cache_entry_find_next - find next entry in cache with the same
  * @cache: cache where we should search
  * @entry: entry to start search from
  *
@@ -198,26 +198,26 @@ EXPORT_SYMBOL(mb2_cache_entry_find_first);
  * with the search), finds the first entry in the hash chain. The function
  * drops reference to @entry and returns with a reference to the found entry.
  */
-struct mb2_cache_entry *mb2_cache_entry_find_next(struct mb2_cache *cache,
-						  struct mb2_cache_entry *entry)
+struct mb_cache_entry *mb_cache_entry_find_next(struct mb_cache *cache,
+						struct mb_cache_entry *entry)
 {
 	return __entry_find(cache, entry, entry->e_key);
 }
-EXPORT_SYMBOL(mb2_cache_entry_find_next);
+EXPORT_SYMBOL(mb_cache_entry_find_next);
 
-/* mb2_cache_entry_delete_block - remove information about block from cache
+/* mb_cache_entry_delete_block - remove information about block from cache
  * @cache - cache we work with
  * @key - key of the entry to remove
  * @block - block containing data for @key
  *
  * Remove entry from cache @cache with key @key with data stored in @block.
  */
-void mb2_cache_entry_delete_block(struct mb2_cache *cache, u32 key,
-				  sector_t block)
+void mb_cache_entry_delete_block(struct mb_cache *cache, u32 key,
+				 sector_t block)
 {
 	struct hlist_bl_node *node;
 	struct hlist_bl_head *head;
-	struct mb2_cache_entry *entry;
+	struct mb_cache_entry *entry;
 
 	head = &cache->c_hash[hash_32(key, cache->c_bucket_bits)];
 	hlist_bl_lock(head);
@@ -233,50 +233,50 @@ void mb2_cache_entry_delete_block(struct mb2_cache *cache, u32 key,
 				atomic_dec(&entry->e_refcnt);
 			}
 			spin_unlock(&cache->c_list_lock);
-			mb2_cache_entry_put(cache, entry);
+			mb_cache_entry_put(cache, entry);
 			return;
 		}
 	}
 	hlist_bl_unlock(head);
 }
-EXPORT_SYMBOL(mb2_cache_entry_delete_block);
+EXPORT_SYMBOL(mb_cache_entry_delete_block);
 
-/* mb2_cache_entry_touch - cache entry got used
+/* mb_cache_entry_touch - cache entry got used
  * @cache - cache the entry belongs to
  * @entry - entry that got used
  *
  * Marks entry as used to give hit higher chances of surviving in cache.
  */
-void mb2_cache_entry_touch(struct mb2_cache *cache,
-			   struct mb2_cache_entry *entry)
+void mb_cache_entry_touch(struct mb_cache *cache,
+			  struct mb_cache_entry *entry)
 {
-	mb2_cache_entry_set_referenced(entry);
+	mb_cache_entry_set_referenced(entry);
 }
-EXPORT_SYMBOL(mb2_cache_entry_touch);
+EXPORT_SYMBOL(mb_cache_entry_touch);
 
-static unsigned long mb2_cache_count(struct shrinker *shrink,
-				     struct shrink_control *sc)
+static unsigned long mb_cache_count(struct shrinker *shrink,
+				    struct shrink_control *sc)
 {
-	struct mb2_cache *cache = container_of(shrink, struct mb2_cache,
-					       c_shrink);
+	struct mb_cache *cache = container_of(shrink, struct mb_cache,
+					      c_shrink);
 
 	return cache->c_entry_count;
 }
 
 /* Shrink number of entries in cache */
-static unsigned long mb2_cache_shrink(struct mb2_cache *cache,
-				      unsigned int nr_to_scan)
+static unsigned long mb_cache_shrink(struct mb_cache *cache,
+				     unsigned int nr_to_scan)
 {
-	struct mb2_cache_entry *entry;
+	struct mb_cache_entry *entry;
 	struct hlist_bl_head *head;
 	unsigned int shrunk = 0;
 
 	spin_lock(&cache->c_list_lock);
 	while (nr_to_scan-- && !list_empty(&cache->c_list)) {
 		entry = list_first_entry(&cache->c_list,
-					 struct mb2_cache_entry, e_list);
-		if (mb2_cache_entry_referenced(entry)) {
-			mb2_cache_entry_clear_referenced(entry);
+					 struct mb_cache_entry, e_list);
+		if (mb_cache_entry_referenced(entry)) {
+			mb_cache_entry_clear_referenced(entry);
 			list_move_tail(&cache->c_list, &entry->e_list);
 			continue;
 		}
@@ -287,14 +287,14 @@ static unsigned long mb2_cache_shrink(struct mb2_cache *cache,
 		 * from under us.
 		 */
 		spin_unlock(&cache->c_list_lock);
-		head = mb2_cache_entry_head(entry);
+		head = mb_cache_entry_head(entry);
 		hlist_bl_lock(head);
 		if (!hlist_bl_unhashed(&entry->e_hash_list)) {
 			hlist_bl_del_init(&entry->e_hash_list);
 			atomic_dec(&entry->e_refcnt);
 		}
 		hlist_bl_unlock(head);
-		if (mb2_cache_entry_put(cache, entry))
+		if (mb_cache_entry_put(cache, entry))
 			shrunk++;
 		cond_resched();
 		spin_lock(&cache->c_list_lock);
@@ -304,41 +304,41 @@ static unsigned long mb2_cache_shrink(struct mb2_cache *cache,
 	return shrunk;
 }
 
-static unsigned long mb2_cache_scan(struct shrinker *shrink,
-				    struct shrink_control *sc)
+static unsigned long mb_cache_scan(struct shrinker *shrink,
+				   struct shrink_control *sc)
 {
 	int nr_to_scan = sc->nr_to_scan;
-	struct mb2_cache *cache = container_of(shrink, struct mb2_cache,
+	struct mb_cache *cache = container_of(shrink, struct mb_cache,
 					      c_shrink);
-	return mb2_cache_shrink(cache, nr_to_scan);
+	return mb_cache_shrink(cache, nr_to_scan);
 }
 
 /* We shrink 1/X of the cache when we have too many entries in it */
 #define SHRINK_DIVISOR 16
 
-static void mb2_cache_shrink_worker(struct work_struct *work)
+static void mb_cache_shrink_worker(struct work_struct *work)
 {
-	struct mb2_cache *cache = container_of(work, struct mb2_cache,
-					       c_shrink_work);
-	mb2_cache_shrink(cache, cache->c_max_entries / SHRINK_DIVISOR);
+	struct mb_cache *cache = container_of(work, struct mb_cache,
+					      c_shrink_work);
+	mb_cache_shrink(cache, cache->c_max_entries / SHRINK_DIVISOR);
 }
 
 /*
- * mb2_cache_create - create cache
+ * mb_cache_create - create cache
  * @bucket_bits: log2 of the hash table size
  *
  * Create cache for keys with 2^bucket_bits hash entries.
  */
-struct mb2_cache *mb2_cache_create(int bucket_bits)
+struct mb_cache *mb_cache_create(int bucket_bits)
 {
-	struct mb2_cache *cache;
+	struct mb_cache *cache;
 	int bucket_count = 1 << bucket_bits;
 	int i;
 
 	if (!try_module_get(THIS_MODULE))
 		return NULL;
 
-	cache = kzalloc(sizeof(struct mb2_cache), GFP_KERNEL);
+	cache = kzalloc(sizeof(struct mb_cache), GFP_KERNEL);
 	if (!cache)
 		goto err_out;
 	cache->c_bucket_bits = bucket_bits;
@@ -354,12 +354,12 @@ struct mb2_cache *mb2_cache_create(int bucket_bits)
 	for (i = 0; i < bucket_count; i++)
 		INIT_HLIST_BL_HEAD(&cache->c_hash[i]);
 
-	cache->c_shrink.count_objects = mb2_cache_count;
-	cache->c_shrink.scan_objects = mb2_cache_scan;
+	cache->c_shrink.count_objects = mb_cache_count;
+	cache->c_shrink.scan_objects = mb_cache_scan;
 	cache->c_shrink.seeks = DEFAULT_SEEKS;
 	register_shrinker(&cache->c_shrink);
 
-	INIT_WORK(&cache->c_shrink_work, mb2_cache_shrink_worker);
+	INIT_WORK(&cache->c_shrink_work, mb_cache_shrink_worker);
 
 	return cache;
 
@@ -367,18 +367,18 @@ struct mb2_cache *mb2_cache_create(int bucket_bits)
 	module_put(THIS_MODULE);
 	return NULL;
 }
-EXPORT_SYMBOL(mb2_cache_create);
+EXPORT_SYMBOL(mb_cache_create);
 
 /*
- * mb2_cache_destroy - destroy cache
+ * mb_cache_destroy - destroy cache
  * @cache: the cache to destroy
  *
  * Free all entries in cache and cache itself. Caller must make sure nobody
  * (except shrinker) can reach @cache when calling this.
  */
-void mb2_cache_destroy(struct mb2_cache *cache)
+void mb_cache_destroy(struct mb_cache *cache)
 {
-	struct mb2_cache_entry *entry, *next;
+	struct mb_cache_entry *entry, *next;
 
 	unregister_shrinker(&cache->c_shrink);
 
@@ -394,30 +394,30 @@ void mb2_cache_destroy(struct mb2_cache *cache)
 			WARN_ON(1);
 		list_del(&entry->e_list);
 		WARN_ON(atomic_read(&entry->e_refcnt) != 1);
-		mb2_cache_entry_put(cache, entry);
+		mb_cache_entry_put(cache, entry);
 	}
 	kfree(cache->c_hash);
 	kfree(cache);
 	module_put(THIS_MODULE);
 }
-EXPORT_SYMBOL(mb2_cache_destroy);
+EXPORT_SYMBOL(mb_cache_destroy);
 
-static int __init mb2cache_init(void)
+static int __init mbcache_init(void)
 {
-	mb2_entry_cache = kmem_cache_create("mbcache",
-				sizeof(struct mb2_cache_entry), 0,
+	mb_entry_cache = kmem_cache_create("mbcache",
+				sizeof(struct mb_cache_entry), 0,
 				SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD, NULL);
-	BUG_ON(!mb2_entry_cache);
+	BUG_ON(!mb_entry_cache);
 	return 0;
 }
 
-static void __exit mb2cache_exit(void)
+static void __exit mbcache_exit(void)
 {
-	kmem_cache_destroy(mb2_entry_cache);
+	kmem_cache_destroy(mb_entry_cache);
 }
 
-module_init(mb2cache_init)
-module_exit(mb2cache_exit)
+module_init(mbcache_init)
+module_exit(mbcache_exit)
 
 MODULE_AUTHOR("Jan Kara <jack@suse.cz>");
 MODULE_DESCRIPTION("Meta block cache (for extended attributes)");

include/linux/mbcache2.h → include/linux/mbcache.h

-#ifndef _LINUX_MB2CACHE_H
-#define _LINUX_MB2CACHE_H
+#ifndef _LINUX_MBCACHE_H
+#define _LINUX_MBCACHE_H
 
 #include <linux/hash.h>
 #include <linux/list_bl.h>
@@ -7,9 +7,9 @@
 #include <linux/atomic.h>
 #include <linux/fs.h>
 
-struct mb2_cache;
+struct mb_cache;
 
-struct mb2_cache_entry {
+struct mb_cache_entry {
 	/* List of entries in cache - protected by cache->c_list_lock */
 	struct list_head	e_list;
 	/* Hash table list - protected by bitlock in e_hash_list_head */
@@ -26,28 +26,28 @@ struct mb2_cache_entry {
 	unsigned long		_e_hash_list_head;
 };
 
-struct mb2_cache *mb2_cache_create(int bucket_bits);
-void mb2_cache_destroy(struct mb2_cache *cache);
+struct mb_cache *mb_cache_create(int bucket_bits);
+void mb_cache_destroy(struct mb_cache *cache);
 
-int mb2_cache_entry_create(struct mb2_cache *cache, gfp_t mask, u32 key,
-			   sector_t block);
-void __mb2_cache_entry_free(struct mb2_cache_entry *entry);
-static inline int mb2_cache_entry_put(struct mb2_cache *cache,
-				      struct mb2_cache_entry *entry)
+int mb_cache_entry_create(struct mb_cache *cache, gfp_t mask, u32 key,
+			  sector_t block);
+void __mb_cache_entry_free(struct mb_cache_entry *entry);
+static inline int mb_cache_entry_put(struct mb_cache *cache,
+				     struct mb_cache_entry *entry)
 {
 	if (!atomic_dec_and_test(&entry->e_refcnt))
 		return 0;
-	__mb2_cache_entry_free(entry);
+	__mb_cache_entry_free(entry);
 	return 1;
 }
 
-void mb2_cache_entry_delete_block(struct mb2_cache *cache, u32 key,
+void mb_cache_entry_delete_block(struct mb_cache *cache, u32 key,
 				  sector_t block);
-struct mb2_cache_entry *mb2_cache_entry_find_first(struct mb2_cache *cache,
-						   u32 key);
-struct mb2_cache_entry *mb2_cache_entry_find_next(struct mb2_cache *cache,
-						  struct mb2_cache_entry *entry);
-void mb2_cache_entry_touch(struct mb2_cache *cache,
-			   struct mb2_cache_entry *entry);
+struct mb_cache_entry *mb_cache_entry_find_first(struct mb_cache *cache,
+						 u32 key);
+struct mb_cache_entry *mb_cache_entry_find_next(struct mb_cache *cache,
+						struct mb_cache_entry *entry);
+void mb_cache_entry_touch(struct mb_cache *cache,
+			  struct mb_cache_entry *entry);
 
-#endif	/* _LINUX_MB2CACHE_H */
+#endif	/* _LINUX_MBCACHE_H */