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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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9
block.c
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@ -5155,6 +5155,15 @@ ImageInfoSpecific *bdrv_get_specific_info(BlockDriverState *bs,
return NULL;
}
BlockStatsSpecific *bdrv_get_specific_stats(BlockDriverState *bs)
{
BlockDriver *drv = bs->drv;
if (!drv || !drv->bdrv_get_specific_stats) {
return NULL;
}
return drv->bdrv_get_specific_stats(bs);
}
void bdrv_debug_event(BlockDriverState *bs, BlkdebugEvent event)
{
if (!bs || !bs->drv || !bs->drv->bdrv_debug_event) {