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9e85cd5ce0
qemu/block
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Stefan Hajnoczi 9e85cd5ce0 block: let commit blockjob run in BDS AioContext 
The commit block job must run in the BlockDriverState AioContext so that
it works with dataplane.

Acquire the AioContext in blockdev.c so starting the block job is safe.
One detail here is that the bdrv_drain_all() must be moved inside the
aio_context_acquire() region so requests cannot sneak in between the
drain and acquire.

The completion code in block/commit.c must perform backing chain
manipulation and bdrv_reopen() from the main loop.  Use
block_job_defer_to_main_loop() to achieve that.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 1413889440-32577-11-git-send-email-stefanha@redhat.com
2014-11-03 11:41:49 +00:00
..
accounting.c block: Make the block accounting functions operate on BlockAcctStats 2014-09-10 10:41:29 +02:00
archipelago.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
backup.c block: let backup blockjob run in BDS AioContext 2014-11-03 11:41:49 +00:00
blkdebug.c qcow2: Optimize bdrv_make_empty() 2014-11-03 11:41:48 +00:00
blkverify.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
block-backend.c block: Make device model's references to BlockBackend strong 2014-10-20 14:03:51 +02:00
bochs.c block: Use g_new() & friends to avoid multiplying sizes 2014-08-20 11:51:28 +02:00
cloop.c cloop: Handle failure for potentially large allocations 2014-08-15 15:07:15 +02:00
commit.c block: let commit blockjob run in BDS AioContext 2014-11-03 11:41:49 +00:00
curl.c block/curl: Improve type safety of s->timeout. 2014-11-03 11:41:47 +00:00
dmg.c dmg: Handle failure for potentially large allocations 2014-08-15 15:07:15 +02:00
gluster.c block: don't convert file size to sector size 2014-09-12 15:43:06 +02:00
iscsi.c block/iscsi: check for oversized requests 2014-11-03 09:48:41 +00:00
linux-aio.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
Makefile.objs qemu-img: Implement commit like QMP 2014-11-03 11:41:48 +00:00
mirror.c block: let mirror blockjob run in BDS AioContext 2014-11-03 11:41:49 +00:00
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: Fix filename generation 2014-10-20 13:41:26 +02:00
nfs.c block: round up file size to nearest sector 2014-09-12 15:43:06 +02:00
null.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
parallels.c block/parallels: fix access to not initialized memory in catalog_bitmap 2014-11-03 09:48:41 +00:00
qapi.c block: Lift device model API into BlockBackend 2014-10-20 14:03:50 +02:00
qcow2-cache.c qcow2: Use g_try_new0() for cache array 2014-08-20 11:51:28 +02:00
qcow2-cluster.c block/qcow2: Simplify shared L2 handling in amend 2014-11-03 11:41:49 +00:00
qcow2-refcount.c block/qcow2: Make get_refcount() global 2014-11-03 11:41:49 +00:00
qcow2-snapshot.c qcow2: Allow "full" discard 2014-11-03 11:41:47 +00:00
qcow2.c block/qcow2: Implement status CB for amend 2014-11-03 11:41:49 +00:00
qcow2.h block/qcow2: Make get_refcount() global 2014-11-03 11:41:49 +00:00
qcow.c block: Eliminate BlockDriverState member device_name[] 2014-10-20 13:41:26 +02:00
qed-check.c block: Use g_new() & friends to avoid multiplying sizes 2014-08-20 11:51:28 +02:00
qed-cluster.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
qed-gencb.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
qed-l2-cache.c qed: do not evict in-use L2 table cache entries 2012-03-12 15:14:06 +01:00
qed-table.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
qed.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
qed.h block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
quorum.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
raw_bsd.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
raw-aio.h block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
raw-posix.c raw-posix: raw_co_get_block_status() return value 2014-11-03 11:41:47 +00:00
raw-win32.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
rbd.c rbd: Add support for bdrv_invalidate_cache 2014-11-03 09:48:41 +00:00
sheepdog.c block: Rename BlockDriverAIOCB* to BlockAIOCB* 2014-10-20 13:41:27 +02:00
snapshot.c snapshot: add bdrv_drain_all() to bdrv_snapshot_delete() to avoid concurrency problem 2014-11-03 09:48:42 +00:00
ssh.c ssh: Don't crash if either host or path is not specified. 2014-10-03 10:30:33 +01:00
stream.c block: let stream blockjob run in BDS AioContext 2014-11-03 11:41:49 +00:00
vdi.c block/vdi: Use {DIV_,}ROUND_UP 2014-10-23 15:34:01 +02:00
vhdx-endian.c block: VHDX endian fixes 2014-08-15 15:07:14 +02:00
vhdx-log.c block: Drop some superfluous casts from void * 2014-08-20 11:51:28 +02:00
vhdx.c block: Eliminate BlockDriverState member device_name[] 2014-10-20 13:41:26 +02:00
vhdx.h block: VHDX endian fixes 2014-08-15 15:07:14 +02:00
vmdk.c block: Eliminate BlockDriverState member device_name[] 2014-10-20 13:41:26 +02:00
vpc.c block: Eliminate BlockDriverState member device_name[] 2014-10-20 13:41:26 +02:00
vvfat.c block: Eliminate BlockDriverState member device_name[] 2014-10-20 13:41:26 +02:00
win32-aio.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00