From ac6bae2b524ddbd7bc0609b70331277c9146144c Mon Sep 17 00:00:00 2001 From: Filipe Manana Date: Wed, 9 Oct 2019 17:43:45 +0100 Subject: [PATCH] Btrfs: add missing extents release on file extent cluster relocation error commit 44db1216efe37bf670f8d1019cdc41658d84baf5 upstream. If we error out when finding a page at relocate_file_extent_cluster(), we need to release the outstanding extents counter on the relocation inode, set by the previous call to btrfs_delalloc_reserve_metadata(), otherwise the inode's block reserve size can never decrease to zero and metadata space is leaked. Therefore add a call to btrfs_delalloc_release_extents() in case we can't find the target page. Fixes: 8b62f87bad9c ("Btrfs: rework outstanding_extents") CC: stable@vger.kernel.org # 4.19+ Signed-off-by: Filipe Manana Reviewed-by: David Sterba Signed-off-by: David Sterba Signed-off-by: Greg Kroah-Hartman --- fs/btrfs/relocation.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 5d57ed629345..bccd9dede2af 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -3187,6 +3187,8 @@ static int relocate_file_extent_cluster(struct inode *inode, if (!page) { btrfs_delalloc_release_metadata(BTRFS_I(inode), PAGE_SIZE, true); + btrfs_delalloc_release_extents(BTRFS_I(inode), + PAGE_SIZE, true); ret = -ENOMEM; goto out; } -- GitLab