From 793955bca66c99defdffc857ae6eb7e8431d6bbe Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Mon, 26 Nov 2007 16:34:41 -0800 Subject: Btrfs: Limit btree writeback to prevent seeks Signed-off-by: Chris Mason --- fs/btrfs/extent_map.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'fs/btrfs/extent_map.h') diff --git a/fs/btrfs/extent_map.h b/fs/btrfs/extent_map.h index 24ddc8c9346..13c562f7cb6 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, -- cgit v1.2.3