5.15-stable review patch. If anyone has any objections, please let me know.
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From: Josef Bacik josef@toxicpanda.com
commit 2d3447261031503b181dacc549fe65ffe2d93d65 upstream.
We have transient failures with btrfs/301, specifically in the part where we do
for i in $(seq 0 10); do write 50m to file rm -f file done
Sometimes this will result in a transient quota error, and it's because sometimes we start writeback on the file which results in a delayed iput, and thus the rm doesn't actually clean the file up. When we're flushing the quota space we need to run the delayed iputs to make sure all the unlinks that we think have completed have actually completed. This removes the small window where we could fail to find enough space in our quota.
CC: stable@vger.kernel.org # 5.15+ Reviewed-by: Qu Wenruo wqu@suse.com Signed-off-by: Josef Bacik josef@toxicpanda.com Signed-off-by: David Sterba dsterba@suse.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/btrfs/qgroup.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -3677,6 +3677,8 @@ static int try_flush_qgroup(struct btrfs return 0; }
+ btrfs_run_delayed_iputs(root->fs_info); + btrfs_wait_on_delayed_iputs(root->fs_info); ret = btrfs_start_delalloc_snapshot(root, true); if (ret < 0) goto out;