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From: | Denis V. Lunev |
Subject: | Re: [PATCH 8/9] parallels: Replace bdrv_co_pwrite_sync by bdrv_co_flush for BAT flushing |
Date: | Mon, 8 Aug 2022 14:24:54 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 |
On 08.08.2022 14:07, Alexander Ivanov wrote:
It's too costly to write all the BAT to the disk. Let the flush function write only dirty blocks. Signed-off-by: Alexander Ivanov <alexander.ivanov@virtuozzo.com> --- block/parallels.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/parallels.c b/block/parallels.c index 72cf7499c1..38b1482e81 100644 --- a/block/parallels.c +++ b/block/parallels.c @@ -469,7 +469,7 @@ static int parallels_check_outside_image(BlockDriverState *bs, }if (flush_bat) {- ret = bdrv_co_pwrite_sync(bs->file, 0, s->header_size, s->header, 0); + ret = bdrv_co_flush(bs); if (ret < 0) { res->check_errors++; return ret;
no-no-no, absolutely no. Please drop ALL flush_bat dances. We do not need them once we have switched to parallels_set_bat_entry. We do NOT need to track this anymore, this is handled inside and thus flush should be made OUTSIDE of helpers in the generic code of the parallels_co_check
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