xfs: prefix XATTR_LIST_MAX with XFS_

Remove a hard dependency of Linux XATTR_LIST_MAX value by using
a prefixed version. This patch reflects the same change in xfsprogs.

Signed-off-by: Jan Tulak <jtulak@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

fs/xfs/libxfs/xfs_fs.h

@@ -489,6 +489,16 @@ typedef struct xfs_swapext
 #define XFS_FSOP_GOING_FLAGS_LOGFLUSH		0x1	/* flush log but not data */
 #define XFS_FSOP_GOING_FLAGS_NOLOGFLUSH		0x2	/* don't flush log nor data */
 
+/*
+ * ioctl limits
+ */
+#ifdef XATTR_LIST_MAX
+#  define XFS_XATTR_LIST_MAX XATTR_LIST_MAX
+#else
+#  define XFS_XATTR_LIST_MAX 65536
+#endif
+
+
 /*
  * ioctl commands that are used by Linux filesystems
  */

fs/xfs/xfs_ioctl.c

@@ -411,7 +411,7 @@ xfs_attrlist_by_handle(
 	if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t)))
 		return -EFAULT;
 	if (al_hreq.buflen < sizeof(struct attrlist) ||
-	    al_hreq.buflen > XATTR_LIST_MAX)
+	    al_hreq.buflen > XFS_XATTR_LIST_MAX)
 		return -EINVAL;
 
 	/*

fs/xfs/xfs_ioctl32.c

@@ -356,7 +356,7 @@ xfs_compat_attrlist_by_handle(
 			   sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
 		return -EFAULT;
 	if (al_hreq.buflen < sizeof(struct attrlist) ||
-	    al_hreq.buflen > XATTR_LIST_MAX)
+	    al_hreq.buflen > XFS_XATTR_LIST_MAX)
 		return -EINVAL;
 
 	/*