From 316e4cfd0b0b4ce846fd0fbda2deebcffbd3e440 Mon Sep 17 00:00:00 2001
From: Theodore Ts'o <tytso@mit.edu>
Date: Fri, 17 Aug 2012 09:56:17 -0400
Subject: [PATCH] jbd2: check return value of blkdev_issue_flush()
blkdev_issue_flush() can fail; make sure the error gets properly
propagated.
This is a port of the equivalent jbd patch from commit 349ecd6a3c0e.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---
fs/jbd2/recovery.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/fs/jbd2/recovery.c b/fs/jbd2/recovery.c
index 0131e4362534..626846bac32f 100644
--- a/fs/jbd2/recovery.c
+++ b/fs/jbd2/recovery.c
@@ -289,8 +289,11 @@ int jbd2_journal_recover(journal_t *journal)
if (!err)
err = err2;
/* Make sure all replayed data is on permanent storage */
- if (journal->j_flags & JBD2_BARRIER)
- blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL);
+ if (journal->j_flags & JBD2_BARRIER) {
+ err2 = blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL);
+ if (!err)
+ err = err2;
+ }
return err;
}