generic_file_fsync has been updated to issue a flush for
older filesystems.
This patch checks barrier flag in ext4 mount flags
and calls the right function.
Suggested-by: Jan Kara <[email protected]>
Suggested-by: Christoph Hellwig <[email protected]>
Cc: Jan Kara <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: "Theodore Ts'o" <[email protected]>
Cc: Andrew Morton <[email protected]>
Signed-off-by: Fabian Frederick <[email protected]>
---
fs/ext4/fsync.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c
index a8bc47f..95bbca0 100644
--- a/fs/ext4/fsync.c
+++ b/fs/ext4/fsync.c
@@ -107,7 +107,11 @@ 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);
+ if (test_opt(inode->i_sb, BARRIER))
+ ret = generic_file_fsync(file, start, end, datasync);
+ else
+ ret = __generic_file_fsync(file, start, end, datasync,
+ false);
if (!ret && !hlist_empty(&inode->i_dentry))
ret = ext4_sync_parent(inode);
goto out;
--
1.8.4.5