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ext4: issue fsdev cache flush before starting fast commit 

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>
Link: https://lore.kernel.org/r/20201106035911.1942128-20-harshadshirwadkar@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Harshad Shirwadkar 2020-11-05 19:59:08 -08:00 committed by Theodore Ts'o
parent 556e0319fb
commit da0c5d2695
1 changed files with 7 additions and 0 deletions
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7
fs/ext4/fast_commit.c
View File

@ -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) {
/*