On Wed, Apr 06, 2016 at 07:22:52PM +1000, Dave Chinner wrote:
> From: Dave Chinner <dchinner@xxxxxxxxxx>
>
> xfs_iflush_cluster() does a gang lookup on the radix tree, meaning
> it can find inode beyond the current cluster if there is sparse
inodes
> cache population. gang lookups return results in ascending index
> order, so stop trying to cluster iodes once the first inode outside
inodes
> the cluster mask is detected.
>
> Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
> ---
Reviewed-by: Brian Foster <bfoster@xxxxxxxxxx>
> fs/xfs/xfs_inode.c | 13 +++++++++++--
> 1 file changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
> index 6598104..b984be4 100644
> --- a/fs/xfs/xfs_inode.c
> +++ b/fs/xfs/xfs_inode.c
> @@ -3194,11 +3194,20 @@ xfs_iflush_cluster(
> */
> spin_lock(&cip->i_flags_lock);
> if (!cip->i_ino ||
> - __xfs_iflags_test(ip, XFS_ISTALE) ||
> - (XFS_INO_TO_AGINO(mp, cip->i_ino) & mask) != first_index) {
> + __xfs_iflags_test(ip, XFS_ISTALE)) {
> spin_unlock(&cip->i_flags_lock);
> continue;
> }
> +
> + /*
> + * Once we fall off the end of the cluster, no point checking
> + * any more inodes in the list because they will also all be
> + * outside the cluster.
> + */
> + if ((XFS_INO_TO_AGINO(mp, cip->i_ino) & mask) != first_index) {
> + spin_unlock(&cip->i_flags_lock);
> + break;
> + }
> spin_unlock(&cip->i_flags_lock);
>
> /*
> --
> 2.7.0
>
> _______________________________________________
> xfs mailing list
> xfs@xxxxxxxxxxx
> http://oss.sgi.com/mailman/listinfo/xfs
_______________________________________________
xfs mailing list
xfs@xxxxxxxxxxx
http://oss.sgi.com/mailman/listinfo/xfs
