1 files changed, 18 insertions, 4 deletions

diff --git a/fs/inode.c b/fs/inode.c
index 04536ebc5ac4..bf21dc6d0dbd 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1177,13 +1177,27 @@ void touch_atime(struct vfsmount *mnt, struct dentry *dentry)
                         return;
                 if ((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode))
                         return;
+
+                if (mnt->mnt_flags & MNT_RELATIME) {
+                        /*
+                         * With relative atime, only update atime if the
+                         * previous atime is earlier than either the ctime or
+                         * mtime.
+                         */
+                        if (timespec_compare(&inode->i_mtime,
+                                                &inode->i_atime) < 0 &&
+                            timespec_compare(&inode->i_ctime,
+                                                &inode->i_atime) < 0)
+                                return;
+                }
         }
 
         now = current_fs_time(inode->i_sb);
-        if (!timespec_equal(&inode->i_atime, &now)) {
-                inode->i_atime = now;
-                mark_inode_dirty_sync(inode);
-        }
+        if (timespec_equal(&inode->i_atime, &now))
+                return;
+
+        inode->i_atime = now;
+        mark_inode_dirty_sync(inode);
 }
 EXPORT_SYMBOL(touch_atime);