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| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-05-25 02:47:14 +0900 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-06-10 23:41:12 +0900 |
| commit | c3a7abf06ce719a51139e62a034590be99abbc2c (patch) | |
| tree | 14d61bbd8c34d1b1c7997c9afad79158b7af2914 /fs/nilfs2/bmap.h | |
| parent | fa032744ad41de1b0a1807e7c379c6196e72ad80 (diff) | |
| download | lwn-c3a7abf06ce719a51139e62a034590be99abbc2c.tar.gz lwn-c3a7abf06ce719a51139e62a034590be99abbc2c.zip | |
nilfs2: support contiguous lookup of blocks
Although get_block() callback function can return extent of contiguous
blocks with bh->b_size, nilfs_get_block() function did not support
this feature.
This adds contiguous lookup feature to the block mapping codes of
nilfs, and allows the nilfs_get_blocks() function to return the extent
information by applying the feature.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/bmap.h')
| -rw-r--r-- | fs/nilfs2/bmap.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/nilfs2/bmap.h b/fs/nilfs2/bmap.h index 47f5b74713c0..b2890cdcef12 100644 --- a/fs/nilfs2/bmap.h +++ b/fs/nilfs2/bmap.h @@ -64,6 +64,8 @@ struct nilfs_bmap_stats { */ struct nilfs_bmap_operations { int (*bop_lookup)(const struct nilfs_bmap *, __u64, int, __u64 *); + int (*bop_lookup_contig)(const struct nilfs_bmap *, __u64, __u64 *, + unsigned); int (*bop_insert)(struct nilfs_bmap *, __u64, __u64); int (*bop_delete)(struct nilfs_bmap *, __u64); void (*bop_clear)(struct nilfs_bmap *); @@ -140,6 +142,7 @@ int nilfs_bmap_test_and_clear_dirty(struct nilfs_bmap *); int nilfs_bmap_read(struct nilfs_bmap *, struct nilfs_inode *); void nilfs_bmap_write(struct nilfs_bmap *, struct nilfs_inode *); int nilfs_bmap_lookup(struct nilfs_bmap *, unsigned long, unsigned long *); +int nilfs_bmap_lookup_contig(struct nilfs_bmap *, __u64, __u64 *, unsigned); int nilfs_bmap_insert(struct nilfs_bmap *, unsigned long, unsigned long); int nilfs_bmap_delete(struct nilfs_bmap *, unsigned long); int nilfs_bmap_last_key(struct nilfs_bmap *, unsigned long *); @@ -160,6 +163,7 @@ void nilfs_bmap_commit_gcdat(struct nilfs_bmap *, struct nilfs_bmap *); /* * Internal use only */ +struct inode *nilfs_bmap_get_dat(const struct nilfs_bmap *); int nilfs_bmap_prepare_alloc_v(struct nilfs_bmap *, union nilfs_bmap_ptr_req *); void nilfs_bmap_commit_alloc_v(struct nilfs_bmap *, |