1 files changed, 23 insertions, 10 deletions

diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index e5dc1e120e8..be6c7b008f3 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1568,6 +1568,7 @@ static int ubifs_remount_rw(struct ubifs_info *c)
 	mutex_lock(&c->umount_mutex);
 	dbg_save_space_info(c);
 	c->remounting_rw = 1;
+	c->ro_mount = 0;
 
 	err = check_free_space(c);
 	if (err)
@@ -1670,19 +1671,30 @@ static int ubifs_remount_rw(struct ubifs_info *c)
 	if (err)
 		goto out;
 
+	dbg_gen("re-mounted read-write");
+	c->remounting_rw = 0;
+
 	if (c->need_recovery) {
 		c->need_recovery = 0;
 		ubifs_msg("deferred recovery completed");
+	} else {
+		/*
+		 * Do not run the debugging space check if the were doing
+		 * recovery, because when we saved the information we had the
+		 * file-system in a state where the TNC and lprops has been
+		 * modified in memory, but all the I/O operations (including a
+		 * commit) were deferred. So the file-system was in
+		 * "non-committed" state. Now the file-system is in committed
+		 * state, and of course the amount of free space will change
+		 * because, for example, the old index size was imprecise.
+		 */
+		err = dbg_check_space_info(c);
 	}
-
-	dbg_gen("re-mounted read-write");
-	c->ro_mount = 0;
-	c->remounting_rw = 0;
-	err = dbg_check_space_info(c);
 	mutex_unlock(&c->umount_mutex);
 	return err;
 
 out:
+	c->ro_mount = 1;
 	vfree(c->orph_buf);
 	c->orph_buf = NULL;
 	if (c->bgt) {
@@ -1760,10 +1772,12 @@ static void ubifs_put_super(struct super_block *sb)
 	 * of the media. For example, there will be dirty inodes if we failed
 	 * to write them back because of I/O errors.
 	 */
-	ubifs_assert(atomic_long_read(&c->dirty_pg_cnt) == 0);
-	ubifs_assert(c->budg_idx_growth == 0);
-	ubifs_assert(c->budg_dd_growth == 0);
-	ubifs_assert(c->budg_data_growth == 0);
+	if (!c->ro_error) {
+		ubifs_assert(atomic_long_read(&c->dirty_pg_cnt) == 0);
+		ubifs_assert(c->budg_idx_growth == 0);
+		ubifs_assert(c->budg_dd_growth == 0);
+		ubifs_assert(c->budg_data_growth == 0);
+	}
 
 	/*
 	 * The 'c->umount_lock' prevents races between UBIFS memory shrinker
@@ -2011,7 +2025,6 @@ static int ubifs_fill_super(struct super_block *sb, void *data, int silent)
 	 */
 	c->bdi.name = "ubifs",
 	c->bdi.capabilities = BDI_CAP_MAP_COPY;
-	c->bdi.unplug_io_fn = default_unplug_io_fn;
 	err  = bdi_init(&c->bdi);
 	if (err)
 		goto out_close;