If the journal dev is different from fsdev, issue a cache flush before
committing fast commit blocks to disk.
Suggested-by: Jan Kara <jack@xxxxxxx>
Signed-off-by: Harshad Shirwadkar <harshadshirwadkar@xxxxxxxxx>
Reviewed-by: Jan Kara <jack@xxxxxxx>
---
fs/ext4/fast_commit.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/fs/ext4/fast_commit.c b/fs/ext4/fast_commit.c
index fb9b4e9d82b2..ebe5f423f8f2 100644
--- a/fs/ext4/fast_commit.c
+++ b/fs/ext4/fast_commit.c
@@ -1007,6 +1007,13 @@ static int ext4_fc_perform_commit(journal_t *journal)
if (ret)
return ret;
+ /*
+ * If file system device is different from journal device, issue a cache
+ * flush before we start writing fast commit blocks.
+ */
+ if (journal->j_fs_dev != journal->j_dev)
+ blkdev_issue_flush(journal->j_fs_dev, GFP_NOFS);
+
blk_start_plug(&plug);
if (sbi->s_fc_bytes == 0) {
/*
--
2.29.1.341.ge80a0c044ae-goog
