Commit b88935bf authored by Miao Xie's avatar Miao Xie Committed by Josef Bacik
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Btrfs: remove the unnecessary flush when preparing the pages 



Signed-off-by: default avatarMiao Xie <miaox@cn.fujitsu.com>
Signed-off-by: default avatarJosef Bacik <jbacik@fb.com>
parent 41bd9ca4

fs/btrfs/file.c

+5 −8
Original line number Diff line number Diff line
@@ -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);
@@ -1372,11 +1372,8 @@ 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

			btrfs_start_ordered_extent(inode, ordered, 1);

			btrfs_put_ordered_extent(ordered);

			return -EAGAIN;

		}

		if (ordered)