From a987c7ca7fc9225a587b1dc59d7d4ad2d9e2e08e Mon Sep 17 00:00:00 2001 From: Younger Liu Date: Mon, 10 Feb 2014 14:25:44 -0800 Subject: [PATCH] ocfs2: fix ocfs2_sync_file() if filesystem is readonly If filesystem is readonly, there is no need to flush drive's caches or force any uncommitted transactions. [akpm@linux-foundation.org: return -EROFS, not 0] Signed-off-by: Younger Liu Cc: Joel Becker Cc: Mark Fasheh Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ocfs2/file.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index d77d71ead8d1..fcd970636bbf 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -185,6 +185,9 @@ static int ocfs2_sync_file(struct file *file, loff_t start, loff_t end, file->f_path.dentry->d_name.name, (unsigned long long)datasync); + if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb)) + return -EROFS; + err = filemap_write_and_wait_range(inode->i_mapping, start, end); if (err) return err;