tree 208cee1e558dad9d6693e924ecf25a13128c4ee2
parent 36b3dc05b4650e81eca7d60d548a92b014595eb1
author Feifei Xu <xufeifei@linux.vnet.ibm.com> 1464779910 +0800
committer David Sterba <dsterba@suse.com> 1465226232 +0200

Btrfs: self-tests: Fix extent buffer bitmap test fail on BE system

In __test_eb_bitmaps(), we write random data to a bitmap. Then copy
the bitmap to another bitmap that resides inside an extent buffer.
Later we verify the values of corresponding bits in the bitmap and the
bitmap inside the extent buffer. However, extent_buffer_test_bit()
reads in byte granularity while test_bit() reads in unsigned long
granularity. Hence we end up comparing wrong bits on big-endian
systems such as ppc64. This commit fixes the issue by reading the
bitmap in byte granularity.

Reviewed-by: Josef Bacik <jbacik@fb.com>
Reviewed-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Signed-off-by: Feifei Xu <xufeifei@linux.vnet.ibm.com>
Signed-off-by: David Sterba <dsterba@suse.com>