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Stefan Hajnoczi ea17c9d20d block: use BDRV_POLL_WHILE() in bdrv_rw_vmstate() 
Calling aio_poll() directly may have been fine previously, but this is
the future, man!  The difference between an aio_poll() loop and
BDRV_POLL_WHILE() is that BDRV_POLL_WHILE() releases the AioContext
around aio_poll().

This allows the IOThread to run fd handlers or BHs to complete the
request.  Failure to release the AioContext causes deadlocks.

Using BDRV_POLL_WHILE() partially fixes a 'savevm' hang with -object
iothread.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-06-26 14:51:13 +02:00
..
accounting.c
block: make accounting thread-safe
2017-06-16 07:55:00 +08:00
backup.c
blockjob: introduce block_job_early_fail
2017-05-24 16:38:51 -04:00
blkdebug.c
qapi: merge QInt and QFloat in QNum
2017-06-20 14:31:31 +02:00
blkreplay.c
block: Do not unref bs->file on error in BD's open
2017-04-27 16:12:13 +02:00
blkverify.c
qobject: Use simpler QDict/QList scalar insertion macros
2017-05-09 09:13:51 +02:00
block-backend.c
block: split BlockAcctStats creation and setup
2017-06-16 07:55:00 +08:00
bochs.c
block: do not set BDS read_only if copy_on_read enabled
2017-04-24 15:09:33 -04:00
cloop.c
block: do not set BDS read_only if copy_on_read enabled
2017-04-24 15:09:33 -04:00
commit.c
commit: Fix completion with extra reference
2017-06-26 14:51:12 +02:00
crypto.c
crypto: move 'opaque' parameter to (nearly) the end of parameter list
2017-05-09 14:41:47 +01:00
curl.c
curl: do not do aio_poll when waiting for a free CURLState
2017-05-16 10:34:50 -04:00
dirty-bitmap.c
block: protect modification of dirty bitmaps with a mutex
2017-06-16 07:55:00 +08:00
dmg-bz2.c
dmg: Move libbz2 code to dmg-bz2.so
2016-10-07 14:14:06 +02:00
dmg.c
block: do not set BDS read_only if copy_on_read enabled
2017-04-24 15:09:33 -04:00
dmg.h
dmg: Move libbz2 code to dmg-bz2.so
2016-10-07 14:14:06 +02:00
file-posix.c
block/file-*: *_parse_filename() and colons
2017-05-29 15:39:54 +02:00
file-win32.c
block/file-*: *_parse_filename() and colons
2017-05-29 15:39:54 +02:00
gluster.c
block/gluster.c: Handle qdict_array_entries() failure
2017-06-09 08:41:29 -04:00
io.c
block: use BDRV_POLL_WHILE() in bdrv_rw_vmstate()
2017-06-26 14:51:13 +02:00
iscsi-opts.c
block/iscsi: statically link qemu_iscsi_opts
2017-01-27 18:07:58 +01:00
iscsi.c
block/iscsi: enable filename option and parsing
2017-06-14 17:39:46 -04:00
linux-aio.c
block: explicitly acquire aiocontext in aio callbacks that need it
2017-02-21 11:39:39 +00:00
Makefile.objs
block/vxhs.c: Add support for a new block device type called "vxhs"
2017-04-24 15:08:42 -04:00
mirror.c
block: protect modification of dirty bitmaps with a mutex
2017-06-16 07:55:00 +08:00
nbd-client.c
nbd: rename read_sync and friends
2017-06-15 11:04:06 +02:00
nbd-client.h
nbd: drop unused NBDClientSession.is_unix field
2017-03-27 14:41:01 +02:00
nbd.c
qapi: merge QInt and QFloat in QNum
2017-06-20 14:31:31 +02:00
nfs.c
QAPI patches for 2017-06-09
2017-06-22 11:34:39 +01:00
null.c
qobject: Use simpler QDict/QList scalar insertion macros
2017-05-09 09:13:51 +02:00
parallels.c
block: Add errp to b{lk,drv}_truncate()
2017-04-28 16:02:02 +02:00
qapi.c
QAPI patches for 2017-06-09
2017-06-22 11:34:39 +01:00
qcow2-cache.c
qcow2: Remove stale comment
2016-11-25 13:51:30 +01:00
qcow2-cluster.c
block: Tweak error message related to qemu-img amend
2017-05-29 15:39:54 +02:00
qcow2-refcount.c
qcow2: Make distinction between zero cluster types obvious
2017-05-11 14:28:07 +02:00
qcow2-snapshot.c
qcow2: Discard/zero clusters by byte count
2017-05-11 14:28:07 +02:00
qcow2.c
qcow2: remove extra local_error variable
2017-05-29 15:39:53 +02:00
qcow2.h
qcow2: Discard/zero clusters by byte count
2017-05-11 14:28:07 +02:00
qcow.c
block/qcow.c: Fix memory leak in qcow_create()
2017-06-09 13:46:20 +02:00
qed-check.c
qed: Use DIV_ROUND_UP
2016-06-07 18:19:24 +03:00
qed-cluster.c
block: explicitly acquire aiocontext in aio callbacks that need it
2017-02-21 11:39:39 +00:00
qed-gencb.c
block: Clean up includes
2016-01-20 13:36:23 +01:00
qed-l2-cache.c
block: Clean up includes
2016-01-20 13:36:23 +01:00
qed-table.c
block: explicitly acquire aiocontext in aio callbacks that need it
2017-02-21 11:39:39 +00:00
qed.c
migration: migration.h was not needed
2017-05-18 19:20:59 +02:00
qed.h
block: explicitly acquire aiocontext in timers that need it
2017-02-21 11:14:08 +00:00
quorum.c
qapi: merge QInt and QFloat in QNum
2017-06-20 14:31:31 +02:00
raw-format.c
block: Add .bdrv_truncate() error messages
2017-04-28 16:02:03 +02:00
rbd.c
block/rbd: enable filename option and parsing
2017-06-14 17:39:46 -04:00
replication.c
block: Make 'replication_state' an enum
2017-05-07 09:57:51 +03:00
sheepdog.c
QAPI patches for 2017-06-09
2017-06-22 11:34:39 +01:00
snapshot.c
qobject: Use simpler QDict/QList scalar insertion macros
2017-05-09 09:13:51 +02:00
ssh.c
qapi: merge QInt and QFloat in QNum
2017-06-20 14:31:31 +02:00
stream.c
stream: fix crash in stream_start() when block_job_create() fails
2017-05-26 16:48:21 +02:00
throttle-groups.c
throttle-groups: protect throttled requests with a CoMutex
2017-06-16 07:55:00 +08:00
trace-events
block/vxhs.c: Add support for a new block device type called "vxhs"
2017-04-24 15:08:42 -04:00
vdi.c
migration: Create migration/blocker.h
2017-05-17 12:04:59 +02:00
vhdx-endian.c
vhdx: Use QEMU UUID API
2016-09-23 11:42:52 +08:00
vhdx-log.c
block: Add errp to b{lk,drv}_truncate()
2017-04-28 16:02:02 +02:00
vhdx.c
migration: Create migration/blocker.h
2017-05-17 12:04:59 +02:00
vhdx.h
block: vhdx - update PAYLOAD_BLOCK_UNMAPPED value to match 1.00 spec
2014-12-12 15:42:22 +00:00
vmdk.c
migration: Create migration/blocker.h
2017-05-17 12:04:59 +02:00
vpc.c
migration: Create migration/blocker.h
2017-05-17 12:04:59 +02:00
vvfat.c
qapi: merge QInt and QFloat in QNum
2017-06-20 14:31:31 +02:00
vxhs.c
qobject: Use simpler QDict/QList scalar insertion macros
2017-05-09 09:13:51 +02:00
win32-aio.c
block: explicitly acquire aiocontext in aio callbacks that need it
2017-02-21 11:39:39 +00:00
write-threshold.c
block: use bdrv_add_before_write_notifier
2016-10-07 13:34:07 +02:00