From 9b9c5bea0b960616d638711d0ecc270c3a074e7f Mon Sep 17 00:00:00 2001 From: Steve French Date: Sat, 22 Sep 2018 12:07:06 -0500 Subject: cifs: do not return atime less than mtime In network file system it is fairly easy for server and client atime vs. mtime to get confused (and atime updated less frequently) which we noticed broke some apps which expect atime >= mtime Also ignore relatime mount option (rather than error on it) since relatime is basically what some network server fs are doing (relatime). Signed-off-by: Steve French Reviewed-by: Ronnie Sahlberg --- fs/cifs/file.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'fs/cifs/file.c') diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 8d41ca7bfcf1..fa723e7a08d7 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -3889,8 +3889,12 @@ static int cifs_readpage_worker(struct file *file, struct page *page, else cifs_dbg(FYI, "Bytes read %d\n", rc); - file_inode(file)->i_atime = - current_time(file_inode(file)); + /* we do not want atime to be less than mtime, it broke some apps */ + file_inode(file)->i_atime = current_time(file_inode(file)); + if (timespec64_compare(&(file_inode(file)->i_atime), &(file_inode(file)->i_mtime))) + file_inode(file)->i_atime = file_inode(file)->i_mtime; + else + file_inode(file)->i_atime = current_time(file_inode(file)); if (PAGE_SIZE > rc) memset(read_data + rc, 0, PAGE_SIZE - rc); -- cgit v1.2.3