On Mon, Oct 01, 2018 at 05:37:41AM -0700, Christoph Hellwig wrote:
> Instead of just asserting that we have no delalloc space dangling
> in an inode that gets freed print the actual offenders for debug
> mode.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> ---
Thanks for the tweak:
Reviewed-by: Brian Foster <bfoster@xxxxxxxxxx>
> fs/xfs/xfs_super.c | 33 ++++++++++++++++++++++++++++++++-
> 1 file changed, 32 insertions(+), 1 deletion(-)
>
> diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
> index 207ee302b1bb..99250bcb65a7 100644
> --- a/fs/xfs/xfs_super.c
> +++ b/fs/xfs/xfs_super.c
> @@ -933,6 +933,32 @@ xfs_fs_alloc_inode(
> return NULL;
> }
>
> +#ifdef DEBUG
> +static void
> +xfs_check_delalloc(
> + struct xfs_inode *ip,
> + int whichfork)
> +{
> + struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork);
> + struct xfs_bmbt_irec got;
> + struct xfs_iext_cursor icur;
> +
> + if (!ifp || !xfs_iext_lookup_extent(ip, ifp, 0, &icur, &got))
> + return;
> + do {
> + if (isnullstartblock(got.br_startblock)) {
> + xfs_warn(ip->i_mount,
> + "ino %llx %s fork has delalloc extent at [0x%llx:0x%llx]",
> + ip->i_ino,
> + whichfork == XFS_DATA_FORK ? "data" : "cow",
> + got.br_startoff, got.br_blockcount);
> + }
> + } while (xfs_iext_next_extent(ifp, &icur, &got));
> +}
> +#else
> +#define xfs_check_delalloc(ip, whichfork) do { } while (0)
> +#endif
> +
> /*
> * Now that the generic code is guaranteed not to be accessing
> * the linux inode, we can inactivate and reclaim the inode.
> @@ -951,7 +977,12 @@ xfs_fs_destroy_inode(
>
> xfs_inactive(ip);
>
> - ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0);
> + if (!XFS_FORCED_SHUTDOWN(ip->i_mount) && ip->i_delayed_blks) {
> + xfs_check_delalloc(ip, XFS_DATA_FORK);
> + xfs_check_delalloc(ip, XFS_COW_FORK);
> + ASSERT(0);
> + }
> +
> XFS_STATS_INC(ip->i_mount, vn_reclaim);
>
> /*
> --
> 2.19.0
>
