diff options
| author | Denis V. Lunev <den@openvz.org> | 2016-06-16 19:09:41 +0300 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2016-06-20 11:44:12 +0100 |
| commit | ec050f77a549b300ee444634bccd9ec05d134c4d (patch) | |
| tree | ae2e1972507a2adad7439956704c0abd788f5ade /block/io.c | |
| parent | 968d8b0627d3585d6b82da4239b9adf98614ab7c (diff) | |
block: process before_write_notifiers in bdrv_co_discard
This is mandatory for correct backup creation. In the other case the
content under this area would be lost.
Dirty bits are set exactly like in bdrv_aligned_pwritev, i.e. they are set
even if notifier has returned a error.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Vladimir Sementsov-Ogievskiy<vsementsov@virtuozzo.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1466093381-6120-4-git-send-email-den@openvz.org
CC: Fam Zheng <famz@redhat.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block/io.c')
| -rw-r--r-- | block/io.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/block/io.c b/block/io.c index 8ab6f95477..7cf3645ade 100644 --- a/block/io.c +++ b/block/io.c @@ -2350,6 +2350,11 @@ int coroutine_fn bdrv_co_discard(BlockDriverState *bs, int64_t sector_num, tracked_request_begin(&req, bs, sector_num << BDRV_SECTOR_BITS, nb_sectors << BDRV_SECTOR_BITS, BDRV_TRACKED_DISCARD); + ret = notifier_with_return_list_notify(&bs->before_write_notifiers, &req); + if (ret < 0) { + goto out; + } + max_discard = MIN_NON_ZERO(bs->bl.max_discard, BDRV_REQUEST_MAX_SECTORS); while (nb_sectors > 0) { int ret; |