Btrfs: remove the unnecessary flush when preparing the pages (b88935bf) · Commits · 戴 / test

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)