X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=fs%2Fsuper.c;h=2d762ce67f6e6cbc2d16398b8dee93715b0cfb0d;hb=fc0db77b182b24d9aaffb9bef63498856d66c5d3;hp=1db67a6e138cd25f442cd9ff31a29b2afedf5745;hpb=eaf9f4649cf03ba3442712497a30686380ba7c23;p=platform%2Fkernel%2Flinux-starfive.git

diff --git a/fs/super.c b/fs/super.c
index 1db67a6e1..2d762ce 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -1209,7 +1209,9 @@ static void do_thaw_all_callback(struct super_block *sb)
 	bool born = super_lock_excl(sb);
 
 	if (born && sb->s_root) {
-		emergency_thaw_bdev(sb);
+		if (IS_ENABLED(CONFIG_BLOCK))
+			while (sb->s_bdev && !thaw_bdev(sb->s_bdev))
+				pr_warn("Emergency Thaw on %pg\n", sb->s_bdev);
 		thaw_super_locked(sb, FREEZE_HOLDER_USERSPACE);
 	} else {
 		super_unlock_excl(sb);
@@ -1371,6 +1373,50 @@ int get_tree_keyed(struct fs_context *fc,
 }
 EXPORT_SYMBOL(get_tree_keyed);
 
+static int set_bdev_super(struct super_block *s, void *data)
+{
+	s->s_dev = *(dev_t *)data;
+	return 0;
+}
+
+static int super_s_dev_set(struct super_block *s, struct fs_context *fc)
+{
+	return set_bdev_super(s, fc->sget_key);
+}
+
+static int super_s_dev_test(struct super_block *s, struct fs_context *fc)
+{
+	return !(s->s_iflags & SB_I_RETIRED) &&
+		s->s_dev == *(dev_t *)fc->sget_key;
+}
+
+/**
+ * sget_dev - Find or create a superblock by device number
+ * @fc: Filesystem context.
+ * @dev: device number
+ *
+ * Find or create a superblock using the provided device number that
+ * will be stored in fc->sget_key.
+ *
+ * If an extant superblock is matched, then that will be returned with
+ * an elevated reference count that the caller must transfer or discard.
+ *
+ * If no match is made, a new superblock will be allocated and basic
+ * initialisation will be performed (s_type, s_fs_info, s_id, s_dev will
+ * be set). The superblock will be published and it will be returned in
+ * a partially constructed state with SB_BORN and SB_ACTIVE as yet
+ * unset.
+ *
+ * Return: an existing or newly created superblock on success, an error
+ *         pointer on failure.
+ */
+struct super_block *sget_dev(struct fs_context *fc, dev_t dev)
+{
+	fc->sget_key = &dev;
+	return sget_fc(fc, super_s_dev_test, super_s_dev_set);
+}
+EXPORT_SYMBOL(sget_dev);
+
 #ifdef CONFIG_BLOCK
 /*
  * Lock a super block that the callers holds a reference to.
@@ -1429,23 +1475,6 @@ const struct blk_holder_ops fs_holder_ops = {
 };
 EXPORT_SYMBOL_GPL(fs_holder_ops);
 
-static int set_bdev_super(struct super_block *s, void *data)
-{
-	s->s_dev = *(dev_t *)data;
-	return 0;
-}
-
-static int set_bdev_super_fc(struct super_block *s, struct fs_context *fc)
-{
-	return set_bdev_super(s, fc->sget_key);
-}
-
-static int test_bdev_super_fc(struct super_block *s, struct fs_context *fc)
-{
-	return !(s->s_iflags & SB_I_RETIRED) &&
-		s->s_dev == *(dev_t *)fc->sget_key;
-}
-
 int setup_bdev_super(struct super_block *sb, int sb_flags,
 		struct fs_context *fc)
 {
@@ -1523,8 +1552,7 @@ int get_tree_bdev(struct fs_context *fc,
 	}
 
 	fc->sb_flags |= SB_NOSEC;
-	fc->sget_key = &dev;
-	s = sget_fc(fc, test_bdev_super_fc, set_bdev_super_fc);
+	s = sget_dev(fc, dev);
 	if (IS_ERR(s))
 		return PTR_ERR(s);