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-rw-r--r--fs/nilfs2/file.c24
1 files changed, 14 insertions, 10 deletions
diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c
index 26601529dc17..62cebc8e1a1f 100644
--- a/fs/nilfs2/file.c
+++ b/fs/nilfs2/file.c
@@ -37,6 +37,7 @@ int nilfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
* This function should be implemented when the writeback function
* will be implemented.
*/
+ struct the_nilfs *nilfs;
struct inode *inode = file->f_mapping->host;
int err;
@@ -45,18 +46,21 @@ int nilfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
return err;
mutex_lock(&inode->i_mutex);
- if (!nilfs_inode_dirty(inode)) {
- mutex_unlock(&inode->i_mutex);
- return 0;
+ if (nilfs_inode_dirty(inode)) {
+ if (datasync)
+ err = nilfs_construct_dsync_segment(inode->i_sb, inode,
+ 0, LLONG_MAX);
+ else
+ err = nilfs_construct_segment(inode->i_sb);
}
-
- if (datasync)
- err = nilfs_construct_dsync_segment(inode->i_sb, inode, 0,
- LLONG_MAX);
- else
- err = nilfs_construct_segment(inode->i_sb);
-
mutex_unlock(&inode->i_mutex);
+
+ nilfs = inode->i_sb->s_fs_info;
+ if (!err && nilfs_test_opt(nilfs, BARRIER)) {
+ err = blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
+ if (err != -EIO)
+ err = 0;
+ }
return err;
}