diff mbox series

[v2,19/22] ext4: issue fsdev cache flush before starting fast commit

Message ID 20201106035911.1942128-20-harshadshirwadkar@gmail.com
State Accepted
Headers show
Series ext4 fast commit fixes | expand

Commit Message

harshad shirwadkar Nov. 6, 2020, 3:59 a.m. UTC 
If the journal dev is different from fsdev, issue a cache flush before
committing fast commit blocks to disk.

Suggested-by: Jan Kara <jack@suse.cz>
Signed-off-by: Harshad Shirwadkar <harshadshirwadkar@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
---
 fs/ext4/fast_commit.c | 7 +++++++
 1 file changed, 7 insertions(+)
diff mbox series

Patch

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) {
 		/*