nilfs2: add bmap function to seek a valid key

[cascardo/linux.git] / fs / nilfs2 / bmap.h

diff --git a/fs/nilfs2/bmap.h b/fs/nilfs2/bmap.h
index 9230d33..bfa817c 100644 (file)
--- a/fs/nilfs2/bmap.h
+++ b/fs/nilfs2/bmap.h
@@ -76,8 +76,10 @@ struct nilfs_bmap_operations {
                          union nilfs_binfo *);
        int (*bop_mark)(struct nilfs_bmap *, __u64, int);
 
-       /* The following functions are internal use only. */
+       int (*bop_seek_key)(const struct nilfs_bmap *, __u64, __u64 *);
        int (*bop_last_key)(const struct nilfs_bmap *, __u64 *);
+
+       /* The following functions are internal use only. */
        int (*bop_check_insert)(const struct nilfs_bmap *, __u64);
        int (*bop_check_delete)(struct nilfs_bmap *, __u64);
        int (*bop_gather_data)(struct nilfs_bmap *, __u64 *, __u64 *, int);
@@ -155,6 +157,7 @@ void nilfs_bmap_write(struct nilfs_bmap *, struct nilfs_inode *);
 int nilfs_bmap_lookup_contig(struct nilfs_bmap *, __u64, __u64 *, unsigned);
 int nilfs_bmap_insert(struct nilfs_bmap *bmap, __u64 key, unsigned long rec);
 int nilfs_bmap_delete(struct nilfs_bmap *bmap, __u64 key);
+int nilfs_bmap_seek_key(struct nilfs_bmap *bmap, __u64 start, __u64 *keyp);
 int nilfs_bmap_last_key(struct nilfs_bmap *bmap, __u64 *keyp);
 int nilfs_bmap_truncate(struct nilfs_bmap *bmap, __u64 key);
 void nilfs_bmap_clear(struct nilfs_bmap *);