parallels: naive implementation of parallels_co_pwrite_zeroes
commita98b260a525b85be929de76affc06370c4ecbc52
authorDenis V. Lunev <den@openvz.org>
Mon, 18 Sep 2023 18:00:59 +0000 (18 20:00 +0200)
committerDenis V. Lunev <den@openvz.org>
Thu, 21 Sep 2023 06:49:17 +0000 (21 08:49 +0200)
treeadc29b3da17849d63b8ef4a01d5712fcef1073be
parent4248e34be9c16f93b4720d455977f782615a4d63
parallels: naive implementation of parallels_co_pwrite_zeroes

The zero flag is missed in the Parallels format specification. We can
resort to discard if we have no backing file.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Alexander Ivanov <alexander.ivanov@virtuozzo.com>
block/parallels.c