Zach Brown 8135b18c76 scoutfs: start truncate from first block ...

Truncation updates extents that intersect with the input range.  It
starts with the first block in the range and iterates until it has
searched for all the extents that could cover the range.

Extents are stored in items at their final block location so that we can
use _next to find intersections.  Truncation was searching for the next
extent after the full extent that it was still searching for.  That
means it was starting the search at the last block in the extent, not
the first.  It would miss all the extents that didn't overlap with the
last block it was searching for.

This fixed by searching from a temporary single block extent at the
start of the search range.

Signed-off-by: Zach Brown <zab@versity.com>

2017-08-17 15:29:08 -07:00

kmod

scoutfs: start truncate from first block

2017-08-17 15:29:08 -07:00

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