From: Deepa Dinamani <deepa.kernel@gmail.com>
Date: Fri, 29 Nov 2019 21:30:25 -0800
Subject: [PATCH] fs: cifs: Fix atime update check vs mtime
Git-commit: 69738cfdfa7032f45d9e7462d24490e61cf163dd
References: bsc#1144333
Patch-mainline: v5.5-rc1

According to the comment in the code and commit log, some apps
expect atime >= mtime; but the introduced code results in
atime==mtime.  Fix the comparison to guard against atime<mtime.

Fixes: 9b9c5bea0b96 ("cifs: do not return atime less than mtime")
Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Cc: stfrench@microsoft.com
Cc: linux-cifs@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Paulo Alcantara <palcantara@suse.de>
---
 fs/cifs/inode.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -163,7 +163,7 @@ cifs_fattr_to_inode(struct inode *inode,
 
 	spin_lock(&inode->i_lock);
 	/* we do not want atime to be less than mtime, it broke some apps */
-	if (timespec_compare(&fattr->cf_atime, &fattr->cf_mtime))
+	if (timespec_compare(&fattr->cf_atime, &fattr->cf_mtime) < 0)
 		inode->i_atime = fattr->cf_mtime;
 	else
 		inode->i_atime = fattr->cf_atime;