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| author | Eric Blake <eblake@redhat.com> | 2016-07-15 17:22:54 -0600 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2016-07-20 14:11:55 +0100 |
| commit | 1c6c4bb7f0a4cc3987e58880ef96159985dc1228 (patch) | |
| tree | 701615001a4bdce0a17e1d892c127da44ad21d8e /block/mirror.c | |
| parent | 60ebac16bca3e3bf07c7ae67a69a7730aaa48712 (diff) | |
| download | qemu-1c6c4bb7f0a4cc3987e58880ef96159985dc1228.zip qemu-1c6c4bb7f0a4cc3987e58880ef96159985dc1228.tar.gz qemu-1c6c4bb7f0a4cc3987e58880ef96159985dc1228.tar.bz2 | |
block: Convert BB interface to byte-based discards
Change sector-based blk_discard(), blk_co_discard(), and
blk_aio_discard() to instead be byte-based blk_pdiscard(),
blk_co_pdiscard(), and blk_aio_pdiscard(). NBD gets a lot
simpler now that ignoring the unaligned portion of a
byte-based discard request is handled under the hood by
the block layer.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468624988-423-6-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block/mirror.c')
| -rw-r--r-- | block/mirror.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/block/mirror.c b/block/mirror.c index b1e633e..617bb18 100644 --- a/block/mirror.c +++ b/block/mirror.c @@ -303,8 +303,9 @@ static void mirror_do_zero_or_discard(MirrorBlockJob *s, s->in_flight++; s->sectors_in_flight += nb_sectors; if (is_discard) { - blk_aio_discard(s->target, sector_num, op->nb_sectors, - mirror_write_complete, op); + blk_aio_pdiscard(s->target, sector_num << BDRV_SECTOR_BITS, + op->nb_sectors << BDRV_SECTOR_BITS, + mirror_write_complete, op); } else { blk_aio_pwrite_zeroes(s->target, sector_num * BDRV_SECTOR_SIZE, op->nb_sectors * BDRV_SECTOR_SIZE, |