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qapi: query-blockstat: add driver specific file-posix stats

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A block driver can provide a callback to report driver-specific
statistics.

file-posix driver now reports discard statistics

Signed-off-by: Anton Nefedov <anton.nefedov@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-id: 20190923121737.83281-10-anton.nefedov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Anton Nefedov 2019-09-23 15:17:37 +03:00 • committed by Max Reitz
parent 1c45036636
commit d924559953
6 changed files with 86 additions and 0 deletions
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5
block/qapi.c
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@ -543,6 +543,11 @@ static BlockStats *bdrv_query_bds_stats(BlockDriverState *bs,
s->stats->wr_highest_offset = stat64_get(&bs->wr_highest_offset);
s->driver_specific = bdrv_get_specific_stats(bs);
if (s->driver_specific) {
s->has_driver_specific = true;
}
if (bs->file) {
s->has_parent = true;
s->parent = bdrv_query_bds_stats(bs->file->bs, blk_level);