X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Finode.c;h=bf21dc6d0dbd752d243a2d3b6d92d2d554dc0381;hb=d3f8fd765e94b9137e1f27bbb0ac25289f9e565c;hp=d00de182ecb97fec47c74eb454b89918b6ab3802;hpb=a57bf8a4f23cca2b5be5446649bbe22d1440af5d;p=linux-2.6

diff --git a/fs/inode.c b/fs/inode.c
index d00de182ec..bf21dc6d0d 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1144,7 +1144,6 @@ sector_t bmap(struct inode * inode, sector_t block)
 		res = inode->i_mapping->a_ops->bmap(inode->i_mapping, block);
 	return res;
 }
-
 EXPORT_SYMBOL(bmap);
 
 /**
@@ -1163,27 +1162,43 @@ void touch_atime(struct vfsmount *mnt, struct dentry *dentry)
 
 	if (IS_RDONLY(inode))
 		return;
-
-	if ((inode->i_flags & S_NOATIME) ||
-	    (inode->i_sb->s_flags & MS_NOATIME) ||
-	    ((inode->i_sb->s_flags & MS_NODIRATIME) && S_ISDIR(inode->i_mode)))
+	if (inode->i_flags & S_NOATIME)
+		return;
+	if (inode->i_sb->s_flags & MS_NOATIME)
+		return;
+	if ((inode->i_sb->s_flags & MS_NODIRATIME) && S_ISDIR(inode->i_mode))
 		return;
 
 	/*
 	 * We may have a NULL vfsmount when coming from NFSD
 	 */
-	if (mnt &&
-	    ((mnt->mnt_flags & MNT_NOATIME) ||
-	     ((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode))))
-		return;
+	if (mnt) {
+		if (mnt->mnt_flags & MNT_NOATIME)
+			return;
+		if ((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode))
+			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 (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))
+		return;
+
+	inode->i_atime = now;
+	mark_inode_dirty_sync(inode);
+}
 EXPORT_SYMBOL(touch_atime);
 
 /**