xfs: revert commit 44af6c7e59

In my haste to fix what I thought was a performance problem in the attr
scrub code, I neglected to notice that the xfs_attr_get_ilocked also had
the effect of checking that attributes can actually be looked up through
the attr dabtree.  Fix this.

Fixes: 44af6c7e59 ("xfs: don't load local xattr values during scrub")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>

fs/xfs/scrub/attr.c

@@ -208,14 +208,6 @@ xchk_xattr_actor(
 		return -ECANCELED;
 	}
 
-	/*
-	 * Local and shortform xattr values are stored in the attr leaf block,
-	 * so we don't need to retrieve the value from a remote block to detect
-	 * corruption problems.
-	 */
-	if (value)
-		return 0;
-
 	/*
 	 * Try to allocate enough memory to extract the attr value.  If that
 	 * doesn't work, return -EDEADLOCK as a signal to try again with a
@@ -229,6 +221,11 @@ xchk_xattr_actor(
 
 	args.value = ab->value;
 
+	/*
+	 * Get the attr value to ensure that lookup can find this attribute
+	 * through the dabtree indexing and that remote value retrieval also
+	 * works correctly.
+	 */
 	xfs_attr_sethash(&args);
 	error = xfs_attr_get_ilocked(&args);
 	/* ENODATA means the hash lookup failed and the attr is bad */