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| author | Chris Mason <chris.mason@oracle.com> | 2007-11-27 01:34:41 +0100 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 17:03:58 +0200 |
| commit | 793955bca66c99defdffc857ae6eb7e8431d6bbe (patch) | |
| tree | 2f8376247033fced7289038b8d82e10a6cc55f22 /fs/btrfs/extent_map.h | |
| parent | Btrfs: Handle writeback under high memory pressure better (diff) | |
| download | linux-793955bca66c99defdffc857ae6eb7e8431d6bbe.tar.xz linux-793955bca66c99defdffc857ae6eb7e8431d6bbe.zip | |
Btrfs: Limit btree writeback to prevent seeks
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/extent_map.h')
| -rw-r--r-- | fs/btrfs/extent_map.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/extent_map.h b/fs/btrfs/extent_map.h index 24ddc8c93461..13c562f7cb6f 100644 --- a/fs/btrfs/extent_map.h +++ b/fs/btrfs/extent_map.h @@ -113,6 +113,9 @@ int extent_read_full_page(struct extent_map_tree *tree, struct page *page, int __init extent_map_init(void); void __exit extent_map_exit(void); +u64 count_range_bits(struct extent_map_tree *tree, + u64 *start, u64 max_bytes, unsigned long bits); + int test_range_bit(struct extent_map_tree *tree, u64 start, u64 end, int bits, int filled); int clear_extent_bits(struct extent_map_tree *tree, u64 start, u64 end, |