Ensure that in the no journal mode the write cache is flushed to the disk by
calling a blkdev_issue_flush() which issues a WRITE_BARRIER if necessary.
Signed-off-by: Surbhi Palande <surbhi.palande@canonical.com>
---
fs/ext4/fsync.c | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c
index d6049e4..1d73a50 100644
--- a/fs/ext4/fsync.c
+++ b/fs/ext4/fsync.c
@@ -67,8 +67,12 @@ int ext4_sync_file(struct file *file, struct dentry *dentry, int datasync)
if (ret < 0)
return ret;
- if (!journal)
- return simple_fsync(file, dentry, datasync);
+ if (!journal) {
+ ret = simple_fsync(file, dentry, datasync);
+ if (test_opt(inode->i_sb, BARRIER))
+ blkdev_issue_flush(inode->i_sb->s_bdev, NULL);
+ return ret;
+ }
/*
* data=writeback,ordered:
--
1.6.3.3
--
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