Also, if we are going to issue the barrier, we should do this after we
write out the parent directories if necessary.
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
---
fs/ext4/fsync.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c
index 8850254..011863e 100644
--- a/fs/ext4/fsync.c
+++ b/fs/ext4/fsync.c
@@ -106,9 +106,11 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
}
if (!journal) {
- ret = generic_file_fsync(file, start, end, datasync);
+ ret = __generic_file_fsync(file, start, end, datasync);
if (!ret && !hlist_empty(&inode->i_dentry))
ret = ext4_sync_parent(inode);
+ if (journal->j_flags & JBD2_BARRIER)
+ goto issue_flush;
goto out;
}
@@ -140,6 +142,7 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
needs_barrier = true;
ret = jbd2_complete_transaction(journal, commit_tid);
if (needs_barrier) {
+ issue_flush:
err = blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
if (!ret)
ret = err;
--
2.5.0
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