xfs: xfs_attr_shortform_allfit() does not handle attr3 format.

xfstests generic/117 fails with:

XFS: Assertion failed: leaf->hdr.info.magic == cpu_to_be16(XFS_ATTR_LEAF_MAGIC)

indicating a function that does not handle the attr3 format
correctly. Fix it.
Signed-off-by: NDave Chinner <dchinner@redhat.com>
Reviewed-by: NBen Myers <bpm@sgi.com>
Signed-off-by: NBen Myers <bpm@sgi.com>
(cherry picked from commit b38958d7)

fs/xfs/xfs_attr_leaf.c

@@ -934,17 +934,19 @@ xfs_attr_shortform_allfit(
 	struct xfs_buf		*bp,
 	struct xfs_inode	*dp)
 {
-	xfs_attr_leafblock_t *leaf;
-	xfs_attr_leaf_entry_t *entry;
+	struct xfs_attr_leafblock *leaf;
+	struct xfs_attr_leaf_entry *entry;
 	xfs_attr_leaf_name_local_t *name_loc;
-	int bytes, i;
+	struct xfs_attr3_icleaf_hdr leafhdr;
+	int			bytes;
+	int			i;
 
 	leaf = bp->b_addr;
-	ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_ATTR_LEAF_MAGIC));
+	xfs_attr3_leaf_hdr_from_disk(&leafhdr, leaf);
+	entry = xfs_attr3_leaf_entryp(leaf);
 
-	entry = &leaf->entries[0];
 	bytes = sizeof(struct xfs_attr_sf_hdr);
-	for (i = 0; i < be16_to_cpu(leaf->hdr.count); entry++, i++) {
+	for (i = 0; i < leafhdr.count; entry++, i++) {
 		if (entry->flags & XFS_ATTR_INCOMPLETE)
 			continue;		/* don't copy partial entries */
 		if (!(entry->flags & XFS_ATTR_LOCAL))
@@ -954,15 +956,15 @@ xfs_attr_shortform_allfit(
 			return(0);
 		if (be16_to_cpu(name_loc->valuelen) >= XFS_ATTR_SF_ENTSIZE_MAX)
 			return(0);
-		bytes += sizeof(struct xfs_attr_sf_entry)-1
+		bytes += sizeof(struct xfs_attr_sf_entry) - 1
 				+ name_loc->namelen
 				+ be16_to_cpu(name_loc->valuelen);
 	}
 	if ((dp->i_mount->m_flags & XFS_MOUNT_ATTR2) &&
 	    (dp->i_d.di_format != XFS_DINODE_FMT_BTREE) &&
 	    (bytes == sizeof(struct xfs_attr_sf_hdr)))
-		return(-1);
-	return(xfs_attr_shortform_bytesfit(dp, bytes));
+		return -1;
+	return xfs_attr_shortform_bytesfit(dp, bytes);
 }
 
 /*