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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-12-26 08:38:43 +0100
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2011-01-10 06:05:46 +0100
commit622daaff0a8975fb5c5b95f24f3234550ba32e92 (patch)
tree5ae5de9044f962471fa2694654134f5b58f73ace /fs/nilfs2/page.h
parentnilfs2: mark buffer heads as delayed until the data is written to disk (diff)
downloadlinux-622daaff0a8975fb5c5b95f24f3234550ba32e92.tar.xz
linux-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.h3
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)