diff options
Diffstat (limited to 'fs/nilfs2/bmap.c')
-rw-r--r-- | fs/nilfs2/bmap.c | 53 |
1 files changed, 20 insertions, 33 deletions
diff --git a/fs/nilfs2/bmap.c b/fs/nilfs2/bmap.c index f98c5c4cf6e..08834df6ec6 100644 --- a/fs/nilfs2/bmap.c +++ b/fs/nilfs2/bmap.c @@ -36,6 +36,26 @@ struct inode *nilfs_bmap_get_dat(const struct nilfs_bmap *bmap) return nilfs_dat_inode(NILFS_I_NILFS(bmap->b_inode)); } +/** + * nilfs_bmap_lookup_at_level - find a data block or node block + * @bmap: bmap + * @key: key + * @level: level + * @ptrp: place to store the value associated to @key + * + * Description: nilfs_bmap_lookup_at_level() finds a record whose key + * matches @key in the block at @level of the bmap. + * + * Return Value: On success, 0 is returned and the record associated with @key + * is stored in the place pointed by @ptrp. On error, one of the following + * negative error codes is returned. + * + * %-EIO - I/O error. + * + * %-ENOMEM - Insufficient amount of memory available. + * + * %-ENOENT - A record associated with @key does not exist. + */ int nilfs_bmap_lookup_at_level(struct nilfs_bmap *bmap, __u64 key, int level, __u64 *ptrp) { @@ -69,39 +89,6 @@ int nilfs_bmap_lookup_contig(struct nilfs_bmap *bmap, __u64 key, __u64 *ptrp, return ret; } -/** - * nilfs_bmap_lookup - find a record - * @bmap: bmap - * @key: key - * @recp: pointer to record - * - * Description: nilfs_bmap_lookup() finds a record whose key matches @key in - * @bmap. - * - * Return Value: On success, 0 is returned and the record associated with @key - * is stored in the place pointed by @recp. On error, one of the following - * negative error codes is returned. - * - * %-EIO - I/O error. - * - * %-ENOMEM - Insufficient amount of memory available. - * - * %-ENOENT - A record associated with @key does not exist. - */ -int nilfs_bmap_lookup(struct nilfs_bmap *bmap, - unsigned long key, - unsigned long *recp) -{ - __u64 ptr; - int ret; - - /* XXX: use macro for level 1 */ - ret = nilfs_bmap_lookup_at_level(bmap, key, 1, &ptr); - if (recp != NULL) - *recp = ptr; - return ret; -} - static int nilfs_bmap_do_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr) { __u64 keys[NILFS_BMAP_SMALL_HIGH + 1]; |