tree 755eabd7f57703c96d0979a52cc555d0c0deecb3
parent 1b88accf6a659c46d5c8e68912896f112bf882bb
author Andreas Gruenbacher <agruenba@redhat.com> 1519139004 -0700
committer Bob Peterson <rpeterso@redhat.com> 1520526380 -0700

gfs2: Fix fallocate chunk size

The chunk size of allocations in __gfs2_fallocate is calculated
incorrectly.  The size can collapse, causing __gfs2_fallocate to
allocate one block at a time, which is very inefficient.  This needs
fixing in two places:

In gfs2_quota_lock_check, always set ap->allowed to UINT_MAX to indicate
that there is no quota limit.  This fixes callers that rely on
ap->allowed to be set even when quotas are off.

In __gfs2_fallocate, reset max_blks to UINT_MAX in each iteration of the
loop to make sure that allocation limits from one resource group won't
spill over into another resource group.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>