4 files changed, 22 insertions, 12 deletions

diff --git a/fs/dcache.c b/fs/dcache.c
index 6055d61811d3..cb4a10690868 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -3061,8 +3061,13 @@ char *d_path(const struct path *path, char *buf, int buflen)
          * thus don't need to be hashed.  They also don't need a name until a
          * user wants to identify the object in /proc/pid/fd/.  The little hack
          * below allows us to generate a name for these objects on demand:
+         *
+         * Some pseudo inodes are mountable.  When they are mounted
+         * path->dentry == path->mnt->mnt_root.  In that case don't call d_dname
+         * and instead have d_path return the mounted path.
          */
-        if (path->dentry->d_op && path->dentry->d_op->d_dname)
+        if (path->dentry->d_op && path->dentry->d_op->d_dname &&
+            (!IS_ROOT(path->dentry) || path->dentry != path->mnt->mnt_root))
                 return path->dentry->d_op->d_dname(path->dentry, buf, buflen);
 
         rcu_read_lock();
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 1f4a10ece2f1..e0259a163f98 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -516,13 +516,16 @@ writeback_single_inode(struct inode *inode, struct bdi_writeback *wb,
         }
         WARN_ON(inode->i_state & I_SYNC);
         /*
-         * Skip inode if it is clean. We don't want to mess with writeback
-         * lists in this function since flusher thread may be doing for example
-         * sync in parallel and if we move the inode, it could get skipped. So
-         * here we make sure inode is on some writeback list and leave it there
-         * unless we have completely cleaned the inode.
+         * Skip inode if it is clean and we have no outstanding writeback in
+         * WB_SYNC_ALL mode. We don't want to mess with writeback lists in this
+         * function since flusher thread may be doing for example sync in
+         * parallel and if we move the inode, it could get skipped. So here we
+         * make sure inode is on some writeback list and leave it there unless
+         * we have completely cleaned the inode.
          */
-        if (!(inode->i_state & I_DIRTY))
+        if (!(inode->i_state & I_DIRTY) &&
+            (wbc->sync_mode != WB_SYNC_ALL ||
+             !mapping_tagged(inode->i_mapping, PAGECACHE_TAG_WRITEBACK)))
                 goto out;
         inode->i_state |= I_SYNC;
         spin_unlock(&inode->i_lock);
diff --git a/fs/namespace.c b/fs/namespace.c
index ac2ce8a766e1..be32ebccdeb1 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2886,7 +2886,7 @@ bool fs_fully_visible(struct file_system_type *type)
                         struct inode *inode = child->mnt_mountpoint->d_inode;
                         if (!S_ISDIR(inode->i_mode))
                                 goto next;
-                        if (inode->i_nlink != 2)
+                        if (inode->i_nlink > 2)
                                 goto next;
                 }
                 visible = true;
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
index 9f6b486b6c01..a1a191634abc 100644
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -1440,17 +1440,19 @@ static int nilfs_segctor_collect(struct nilfs_sc_info *sci,
 
                 nilfs_clear_logs(&sci->sc_segbufs);
 
-                err = nilfs_segctor_extend_segments(sci, nilfs, nadd);
-                if (unlikely(err))
-                        return err;
-
                 if (sci->sc_stage.flags & NILFS_CF_SUFREED) {
                         err = nilfs_sufile_cancel_freev(nilfs->ns_sufile,
                                                         sci->sc_freesegs,
                                                         sci->sc_nfreesegs,
                                                         NULL);
                         WARN_ON(err); /* do not happen */
+                        sci->sc_stage.flags &= ~NILFS_CF_SUFREED;
                 }
+
+                err = nilfs_segctor_extend_segments(sci, nilfs, nadd);
+                if (unlikely(err))
+                        return err;
+
                 nadd = min_t(int, nadd << 1, SC_MAX_SEGDELTA);
                 sci->sc_stage = prev_stage;
         }