tree 0a3506445bea0ed84db77e574a2901d45a5d5d83
parent 93e8802ea51e68a9e88e5ffe89d683d30ceb35d4
author Marek Behún <marek.behun@nic.cz> 1530728581 +0200
committer Tom Rini <trini@konsulko.com> 1532115464 -0400

fs: btrfs: Fix wrong comparison in logical to physical mapping

The comparison
  logical > item->logical + item->length
in btrfs_map_logical_to_physical is wrong and should be instead
  logical >= item->logical + item->length
For example, if
  item->logical = 4096
  item->length = 4096
and we are looking for logical = 8192, it is not part of item (item is
[4096, 8191]). But the comparison is false and we think we have found
the correct item, although we should be searing in the right subtree.

This fixes some bugs I encountered.

Signed-off-by: Marek Behun <marek.behun@nic.cz>