[PATCH 2/5 resend] Thaw the journal when you unfreeze the fs.

[Kamal Mostafa <kamal@canonical.com>]

From: Surbhi Palande <surbhi.palande@canonical.com>

Thaw the journal so that transactions can resume

BugLink: https://bugs.launchpad.net/bugs/897421
Signed-off-by: Surbhi Palande <surbhi.palande@canonical.com>
Cc: Kamal Mostafa <kamal@canonical.com>
Tested-by: Peter M. Petrakis <peter.petrakis@canonical.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 fs/ext4/super.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 5bfdc21..95f28b8 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4348,10 +4348,14 @@ static int ext4_freeze(struct super_block *sb)
  */
 static int ext4_unfreeze(struct super_block *sb)
 {
+	journal_t *journal;
 	if (sb->s_flags & MS_RDONLY)
 		return 0;
 
 	lock_super(sb);
+	journal = EXT4_SB(sb)->s_journal;
+
+	jbd2_journal_thaw(journal);
 	/* Reset the needs_recovery flag before the fs is unlocked. */
 	EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
 	ext4_commit_super(sb, 1);
-- 
1.7.5.4