From: Dave Chinner Date: Wed, 18 May 2016 04:09:13 +0000 (+1000) Subject: xfs: xfs_iflush_cluster has range issues X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5a90e53e8124d3ebe4b2a6309fa3c3225c23a62a;p=linux-beck.git xfs: xfs_iflush_cluster has range issues xfs_iflush_cluster() does a gang lookup on the radix tree, meaning it can find inodes beyond the current cluster if there is sparse cache population. gang lookups return results in ascending index order, so stop trying to cluster inodes once the first inode outside the cluster mask is detected. Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Reviewed-by: Christoph Hellwig Signed-off-by: Dave Chinner --- diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index e3b27982b3b2..6c746d79925e 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -3207,11 +3207,20 @@ xfs_iflush_cluster( */ spin_lock(&iq->i_flags_lock); if (!iq->i_ino || - __xfs_iflags_test(iq, XFS_ISTALE) || - (XFS_INO_TO_AGINO(mp, iq->i_ino) & mask) != first_index) { + __xfs_iflags_test(iq, XFS_ISTALE)) { spin_unlock(&iq->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, iq->i_ino) & mask) != first_index) { + spin_unlock(&iq->i_flags_lock); + break; + } spin_unlock(&iq->i_flags_lock); /*