tree efdff83971345340faaf57823c0316962445a458
parent 5e962c7850c273b483acc747b41bd5cddf631049
author Josef Bacik <josef@redhat.com> 1313590792 -0400
committer Josef Bacik <josef@redhat.com> 1319051556 -0400

Btrfs: only reserve space in fallocate if we have to do a preallocate

Lukas found a problem where if he tries to fallocate over the same region twice
and the first fallocate took up all the space we would fail with ENOSPC.  This
is because we reserve the total space we want to use for fallocate, regardless
of wether or not we will have to actually preallocate.  So instead move the
check into the loop where we actually have to do the preallocate.  Thanks,

Tested-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Josef Bacik <josef@redhat.com>