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[Qemu-devel] [PULL 12/20] block: process before_write_notifiers in bdrv_
From: |
Stefan Hajnoczi |
Subject: |
[Qemu-devel] [PULL 12/20] block: process before_write_notifiers in bdrv_co_discard |
Date: |
Mon, 20 Jun 2016 15:05:23 +0100 |
From: "Denis V. Lunev" <address@hidden>
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 <address@hidden>
Reviewed-by: Vladimir Sementsov-Ogievskiy<address@hidden>
Reviewed-by: Fam Zheng <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Message-id: address@hidden
CC: Fam Zheng <address@hidden>
CC: Stefan Hajnoczi <address@hidden>
CC: Kevin Wolf <address@hidden>
CC: Max Reitz <address@hidden>
Signed-off-by: Stefan Hajnoczi <address@hidden>
---
block/io.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/block/io.c b/block/io.c
index 8ab6f95..7cf3645 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;
--
2.5.5
- [Qemu-devel] [PULL 01/20] libqos: use virtio_ids.h for device ID definitions, (continued)
- [Qemu-devel] [PULL 01/20] libqos: use virtio_ids.h for device ID definitions, Stefan Hajnoczi, 2016/06/20
- [Qemu-devel] [PULL 02/20] libqos: drop duplicated PCI vendor ID definition, Stefan Hajnoczi, 2016/06/20
- [Qemu-devel] [PULL 04/20] libqos: drop duplicated virtio_ring.h bit definitions, Stefan Hajnoczi, 2016/06/20
- [Qemu-devel] [PULL 05/20] libqos: drop duplicated virtio_vring.h structs, Stefan Hajnoczi, 2016/06/20
- [Qemu-devel] [PULL 06/20] libqos: drop duplicated virtio_blk.h definitions, Stefan Hajnoczi, 2016/06/20
- [Qemu-devel] [PULL 08/20] libqos: drop duplicated virtio_pci.h definitions, Stefan Hajnoczi, 2016/06/20
- [Qemu-devel] [PULL 07/20] libqos: drop duplicated virtio_scsi.h definitions, Stefan Hajnoczi, 2016/06/20
- [Qemu-devel] [PULL 09/20] libqos: add qvirtqueue_cleanup(), Stefan Hajnoczi, 2016/06/20
- [Qemu-devel] [PULL 11/20] block: fix race in bdrv_co_discard with drive-mirror, Stefan Hajnoczi, 2016/06/20
- [Qemu-devel] [PULL 10/20] block: fixed BdrvTrackedRequest filling in bdrv_co_discard, Stefan Hajnoczi, 2016/06/20
- [Qemu-devel] [PULL 12/20] block: process before_write_notifiers in bdrv_co_discard,
Stefan Hajnoczi <=
- [Qemu-devel] [PULL 15/20] blockjob: add pause points, Stefan Hajnoczi, 2016/06/20
- [Qemu-devel] [PULL 14/20] blockjob: rename block_job_is_paused(), Stefan Hajnoczi, 2016/06/20
- [Qemu-devel] [PULL 13/20] blockjob: move iostatus reset out of block_job_enter(), Stefan Hajnoczi, 2016/06/20
- [Qemu-devel] [PULL 16/20] blockjob: add block_job_get_aio_context(), Stefan Hajnoczi, 2016/06/20
- [Qemu-devel] [PULL 17/20] block: use safe iteration over AioContext notifiers, Stefan Hajnoczi, 2016/06/20
- [Qemu-devel] [PULL 18/20] blockjob: add AioContext attached callback, Stefan Hajnoczi, 2016/06/20
- [Qemu-devel] [PULL 20/20] backup: follow AioContext change gracefully, Stefan Hajnoczi, 2016/06/20
- [Qemu-devel] [PULL 19/20] mirror: follow AioContext change gracefully, Stefan Hajnoczi, 2016/06/20
- Re: [Qemu-devel] [PULL 00/20] Block patches, Peter Maydell, 2016/06/20