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| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-12-26 16:38:43 +0900 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2011-01-10 14:05:46 +0900 |
| commit | 622daaff0a8975fb5c5b95f24f3234550ba32e92 (patch) | |
| tree | 5ae5de9044f962471fa2694654134f5b58f73ace /fs/nilfs2/page.h | |
| parent | 27e6c7a3ce29ae5fa5bec4ed5917f8508bfac120 (diff) | |
| download | lwn-622daaff0a8975fb5c5b95f24f3234550ba32e92.tar.gz lwn-622daaff0a8975fb5c5b95f24f3234550ba32e92.zip | |
nilfs2: fiemap support
This adds fiemap to nilfs. Two new functions, nilfs_fiemap and
nilfs_find_uncommitted_extent are added.
nilfs_fiemap() implements the fiemap inode operation, and
nilfs_find_uncommitted_extent() helps to get a range of data blocks
whose physical location has not been determined.
nilfs_fiemap() collects extent information by looping through
nilfs_bmap_lookup_contig and nilfs_find_uncommitted_extent routines.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/page.h')
| -rw-r--r-- | fs/nilfs2/page.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/nilfs2/page.h b/fs/nilfs2/page.h index fb9e8a8a2038..622df27cd891 100644 --- a/fs/nilfs2/page.h +++ b/fs/nilfs2/page.h @@ -66,6 +66,9 @@ void nilfs_mapping_init(struct address_space *mapping, struct backing_dev_info *bdi, const struct address_space_operations *aops); unsigned nilfs_page_count_clean_buffers(struct page *, unsigned, unsigned); +unsigned long nilfs_find_uncommitted_extent(struct inode *inode, + sector_t start_blk, + sector_t *blkoff); #define NILFS_PAGE_BUG(page, m, a...) \ do { nilfs_page_bug(page); BUG(); } while (0) |