From ed3654eb981fd44694b4d2a636e13f998bc10e7f Mon Sep 17 00:00:00 2001
From: Theodore Ts'o <tytso@mit.edu>
Date: Mon, 24 Mar 2014 14:09:06 -0400
Subject: [PATCH] ext4: optimize Hurd tests when reading/writing inodes

Set a in-memory superblock flag to indicate whether the file system is
designed to support the Hurd.

Also, add a sanity check to make sure the 64-bit feature is not set
for Hurd file systems, since i_file_acl_high conflicts with a
Hurd-specific field.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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Reading git-format-patch failed