Zhang Haoyu b57b7ec340 snapshot: add bdrv_drain_all() to bdrv_snapshot_delete() to avoid concurrency problem ...

If there are still pending i/o while deleting snapshot,
because deleting snapshot is done in non-coroutine context, and
the pending i/o read/write (bdrv_co_do_rw) is done in coroutine context,
so it's possible to cause concurrency problem between above two operations.
Add bdrv_drain_all() to bdrv_snapshot_delete() to avoid this problem.

Signed-off-by: Zhang Haoyu <zhanghy@sangfor.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 201410211637596311287@sangfor.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
(cherry picked from commit 3432a1929e)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

2015-01-06 18:40:28 -06:00

..

backup.c

block/backup: Fix hang for unaligned image size

2014-07-09 15:50:11 +02:00

blkdebug.c

blkdebug: Delete BH in bdrv_aio_cancel

2014-09-08 11:23:05 -05:00

blkverify.c

blkverify: implement .bdrv_detach/attach_aio_context()

2014-06-04 09:56:11 +02:00

bochs.c

block/bochs: Fix error handling for seek_to_sector()

2014-04-30 14:46:17 +02:00

cloop.c

block/cloop: use PRIu32 format specifier for uint32_t

2014-04-23 11:34:10 +02:00

commit.c

block: extend block-commit to accept a string for the backing file

2014-07-01 10:47:01 +02:00

cow.c

block/cow: Avoid use of uninitialized cow_bs in error path

2014-07-01 10:15:34 +02:00

curl.c

block: Drop superfluous conditionals around g_free()

2014-06-16 17:23:19 +08:00

dmg.c

block: Use correct width in format strings

2014-04-30 14:46:17 +02:00

gluster.c

cleanup QEMUOptionParameter

2014-06-16 17:23:21 +08:00

iscsi.c

block/iscsi: fix memory corruption on iscsi resize

2014-09-08 11:23:05 -05:00

linux-aio.c

linux-aio: Fix laio resource leak

2014-07-15 15:34:13 +02:00

Makefile.objs

Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

2014-02-25 10:50:11 +00:00

mirror.c

mirror: Fix qiov size for short requests

2014-07-07 09:15:29 +02:00

nbd-client.c

nbd: implement .bdrv_detach/attach_aio_context()

2014-06-04 09:56:11 +02:00

nbd-client.h

nbd: implement .bdrv_detach/attach_aio_context()

2014-06-04 09:56:11 +02:00

nbd.c

nbd: implement .bdrv_detach/attach_aio_context()

2014-06-04 09:56:11 +02:00

nfs.c

block/nfs: add knob to set readahead

2014-06-26 13:51:01 +02:00

parallels.c

parallels: Sanity check for s->tracks (CVE-2014-0142)

2014-04-01 15:22:35 +02:00

qapi.c

block: acquire AioContext in qmp_query_blockstats()

2014-06-27 18:20:29 +02:00

qcow2-cache.c

qcow2: Use negated overflow check mask

2013-10-11 16:50:00 +02:00

qcow2-cluster.c

qcow2: Do not overflow when writing an L1 sector

2015-01-06 18:12:17 -06:00

qcow2-refcount.c

qapi event: convert BLOCK_IMAGE_CORRUPTED

2014-06-23 11:12:27 -04:00

qcow2-snapshot.c

qcow2: Limit snapshot table size

2014-04-01 15:22:35 +02:00

qcow2.c

block: Add Error argument to bdrv_refresh_limits()

2014-07-18 13:18:43 +01:00

qcow2.h

qcow2: Limit snapshot table size

2014-04-01 15:22:35 +02:00

qcow.c

block: Catch backing files assigned to non-COW drivers

2014-06-26 13:51:01 +02:00

qed-check.c

qed: mark image clean after repair succeeds

2012-08-10 10:25:12 +02:00

qed-cluster.c

…

qed-gencb.c

…

qed-l2-cache.c

…

qed-table.c

qed: use BlockDriverState's AioContext

2014-06-04 09:56:11 +02:00

qed.c

block: Add Error argument to bdrv_refresh_limits()

2014-07-18 13:18:43 +01:00

qed.h

qed: Make qiov match request size until backing file EOF

2014-07-14 12:03:20 +02:00

quorum.c

quorum: Add the rewrite-corrupted parameter to quorum

2014-06-27 14:18:17 +02:00

raw_bsd.c

block: Add Error argument to bdrv_refresh_limits()

2014-07-18 13:18:43 +01:00

raw-aio.h

linux-aio: implement io plug, unplug and flush io queue

2014-07-07 11:05:17 +02:00

raw-posix.c

raw-posix: fix O_DIRECT short reads

2014-09-08 11:23:05 -05:00

raw-win32.c

cleanup QEMUOptionParameter

2014-06-16 17:23:21 +08:00

rbd.c

cleanup QEMUOptionParameter

2014-06-16 17:23:21 +08:00

sheepdog.c

sheepdog: fix NULL dereference in sd_create

2014-06-23 16:36:13 +08:00

snapshot.c

snapshot: add bdrv_drain_all() to bdrv_snapshot_delete() to avoid concurrency problem

2015-01-06 18:40:28 -06:00

ssh.c

cleanup QEMUOptionParameter

2014-06-16 17:23:21 +08:00

stream.c

block: Add Error argument to bdrv_refresh_limits()

2014-07-18 13:18:43 +01:00

vdi.c

qemu-img create: add 'nocow' option

2014-07-01 10:15:12 +02:00

vhdx-endian.c

block: vhdx - move more endian translations to vhdx-endian.c

2013-11-07 13:58:59 +01:00

vhdx-log.c

Fixed various typos

2014-03-25 14:09:50 +01:00

vhdx.c

cleanup QEMUOptionParameter

2014-06-16 17:23:21 +08:00

vhdx.h

vhdx.c: replace QEMUOptionParameter with QemuOpts

2014-06-16 17:23:21 +08:00

vmdk.c

block: Add Error argument to bdrv_refresh_limits()

2014-07-18 13:18:43 +01:00

vpc.c

qemu-img create: add 'nocow' option

2014-07-01 10:15:12 +02:00

vvfat.c

cleanup QEMUOptionParameter

2014-06-16 17:23:21 +08:00

win32-aio.c

block/raw-win32: implement .bdrv_detach/attach_aio_context()

2014-06-04 09:56:12 +02:00