From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Sasha Levin To: stable@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Liu Bo , David Sterba , Chris Mason , Sasha Levin Subject: [PATCH AUTOSEL 4.9 41/98] Btrfs: clear EXTENT_DEFRAG bits in finish_ordered_io Date: Thu, 25 Oct 2018 10:13:26 -0400 Message-Id: <20181025141423.213774-41-sashal@kernel.org> In-Reply-To: <20181025141423.213774-1-sashal@kernel.org> References: <20181025141423.213774-1-sashal@kernel.org> List-ID: From: Liu Bo [ Upstream commit 452e62b71fbbefe2646fad3a968371a026936c6d ] Before this, we use 'filled' mode here, ie. if all range has been filled with EXTENT_DEFRAG bits, get to clear it, but if the defrag range joins the adjacent delalloc range, then we'll have EXTENT_DEFRAG bits in extent_state until releasing this inode's pages, and that prevents extent_data from being freed. This clears the bit if any was found within the ordered extent. Signed-off-by: Liu Bo Reviewed-by: David Sterba Signed-off-by: David Sterba Signed-off-by: Chris Mason Signed-off-by: Sasha Levin --- fs/btrfs/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index bd036557c6bc..5ebdb58079e1 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -2966,7 +2966,7 @@ static int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent) ret = test_range_bit(io_tree, ordered_extent->file_offset, ordered_extent->file_offset + ordered_extent->len - 1, - EXTENT_DEFRAG, 1, cached_state); + EXTENT_DEFRAG, 0, cached_state); if (ret) { u64 last_snapshot = btrfs_root_last_snapshot(&root->root_item); if (0 && last_snapshot >= BTRFS_I(inode)->generation) -- 2.17.1