Merge branch 'urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/writeback

* 'urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/writeback:
  don't busy retry the inode on failed grab_super_passive()

1 files changed, 6 insertions, 1 deletions

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 1599aa985fe2..04cf3b91e501 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -618,7 +618,12 @@ static long __writeback_inodes_wb(struct bdi_writeback *wb,
                 struct super_block *sb = inode->i_sb;
 
                 if (!grab_super_passive(sb)) {
-                        requeue_io(inode, wb);
+                        /*
+                         * grab_super_passive() may fail consistently due to
+                         * s_umount being grabbed by someone else. Don't use
+                         * requeue_io() to avoid busy retrying the inode/sb.
+                         */
+                        redirty_tail(inode, wb);
                         continue;
                 }
                 wrote += writeback_sb_inodes(sb, wb, work);