From b88935bf9822cda58fd70dffe8e016d448757d40 Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Thu, 6 Mar 2014 13:54:58 +0800 Subject: [PATCH] Btrfs: remove the unnecessary flush when preparing the pages Signed-off-by: Miao Xie Signed-off-by: Josef Bacik --- fs/btrfs/file.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 006cf9f0e852..b2143b8c33c5 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1360,11 +1360,11 @@ lock_and_cleanup_extent_if_need(struct inode *inode, struct page **pages, struct btrfs_ordered_extent *ordered; lock_extent_bits(&BTRFS_I(inode)->io_tree, start_pos, last_pos, 0, cached_state); - ordered = btrfs_lookup_first_ordered_extent(inode, last_pos); + ordered = btrfs_lookup_ordered_range(inode, start_pos, + last_pos - start_pos + 1); if (ordered && ordered->file_offset + ordered->len > start_pos && ordered->file_offset <= last_pos) { - btrfs_put_ordered_extent(ordered); unlock_extent_cached(&BTRFS_I(inode)->io_tree, start_pos, last_pos, cached_state, GFP_NOFS); @@ -1372,12 +1372,9 @@ lock_and_cleanup_extent_if_need(struct inode *inode, struct page **pages, unlock_page(pages[i]); page_cache_release(pages[i]); } - ret = btrfs_wait_ordered_range(inode, start_pos, - last_pos - start_pos + 1); - if (ret) - return ret; - else - return -EAGAIN; + btrfs_start_ordered_extent(inode, ordered, 1); + btrfs_put_ordered_extent(ordered); + return -EAGAIN; } if (ordered) btrfs_put_ordered_extent(ordered); -- 2.34.1