Denis V. Lunev 156af3ac98 block: fix possible reorder of flush operations ... This patch reduce CPU usage of flush operations a bit. When we have one flush completed we should kick only next operation. We should not start all pending operations in the hope that they will go back to wait on wait_queue. Also there is a technical possibility that requests will get reordered with the previous approach. After wakeup all requests are removed from the wait queue. They become active and they are processed one-by-one adding to the wait queue in the same order. Though new flush can arrive while all requests are not put into the queue. Signed-off-by: Denis V. Lunev <den@openvz.org> Tested-by: Evgeny Yakovlev <eyakovlev@virtuozzo.com> Signed-off-by: Evgeny Yakovlev <eyakovlev@virtuozzo.com> Message-id: 1471457214-3994-3-git-send-email-den@openvz.org CC: Stefan Hajnoczi <stefanha@redhat.com> CC: Fam Zheng <famz@redhat.com> CC: Kevin Wolf <kwolf@redhat.com> CC: Max Reitz <mreitz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>		2016-08-18 14:36:49 +01:00
..
accounting.c	block: Clean up includes	2016-01-20 13:36:23 +01:00
archipelago.c	coccinelle: Remove unnecessary variables for function return value	2016-06-20 16:38:13 +02:00
backup.c	coroutine: move entry argument to qemu_coroutine_create	2016-07-13 13:26:02 +02:00
blkdebug.c	block/blkdebug: Store config filename	2016-08-15 15:52:28 +02:00
blkreplay.c	blkreplay: Switch .bdrv_co_discard() to byte-based	2016-07-20 14:11:55 +01:00
blkverify.c	block: Convert bdrv_aio_writev() to BdrvChild	2016-07-05 16:46:26 +02:00
block-backend.c	block: Convert BB interface to byte-based discards	2016-07-20 14:11:55 +01:00
bochs.c	block: Convert bdrv_co_preadv/pwritev to BdrvChild	2016-07-05 16:46:27 +02:00
cloop.c	block: Convert bdrv_pread(v) to BdrvChild	2016-07-05 16:46:27 +02:00
commit.c	Improve block job rate limiting for small bandwidth values	2016-07-13 13:41:38 +02:00
crypto.c	block: export LUKS specific data to qemu-img info	2016-07-26 17:46:37 +02:00
curl.c	curl: Cast fd to int for DPRINTF	2016-08-17 19:57:54 +08:00
dirty-bitmap.c	dirty-bitmap: operate with int64_t amount	2016-07-19 16:54:46 -04:00
dmg.c	block: Convert bdrv_pread(v) to BdrvChild	2016-07-05 16:46:27 +02:00
gluster.c	Pull request	2016-07-21 11:00:36 +01:00
io.c	block: fix possible reorder of flush operations	2016-08-18 14:36:49 +01:00
iscsi.c	iscsi: Switch .bdrv_co_discard() to byte-based	2016-07-20 14:24:25 +01:00
linux-aio.c	linux-aio: Handle io_submit() failure gracefully	2016-08-11 09:42:35 +01:00
Makefile.objs	block: Move bdrv_commit() to block/commit.c	2016-07-05 16:46:27 +02:00
mirror.c	mirror: finish earlier on error	2016-08-08 13:05:43 +02:00
nbd-client.c	nbd: Convert to byte-based interface	2016-07-20 14:24:25 +01:00
nbd-client.h	nbd: Limit nbdflags to 16 bits	2016-08-03 18:44:56 +02:00
nbd.c	block/nbd: Store runtime option values	2016-08-15 15:52:29 +02:00
nfs.c	coroutine: move entry argument to qemu_coroutine_create	2016-07-13 13:26:02 +02:00
null.c	block/null: Implement bdrv_refresh_filename()	2016-06-16 15:20:37 +02:00
parallels.c	block/parallels: check new image size	2016-08-05 09:59:06 +01:00
qapi.c	qapi: Add new visit_complete() function	2016-07-06 10:52:04 +02:00
qcow2-cache.c	block: Convert bdrv_pwrite(v/_sync) to BdrvChild	2016-07-05 16:46:27 +02:00
qcow2-cluster.c	qcow2: Fix qcow2_get_cluster_offset()	2016-07-13 13:41:38 +02:00
qcow2-refcount.c	block: Convert bdrv_discard() to byte-based	2016-07-20 14:11:55 +01:00
qcow2-snapshot.c	block: Convert bdrv_pwrite(v/_sync) to BdrvChild	2016-07-05 16:46:27 +02:00
qcow2.c	qcow2: do not allocate extra memory	2016-07-26 17:46:37 +02:00
qcow2.h	qcow2: Implement .bdrv_co_pwritev()	2016-06-16 15:19:55 +02:00
qcow.c	qcow2: do not allocate extra memory	2016-07-26 17:46:37 +02:00
qed-check.c	qed: Use DIV_ROUND_UP	2016-06-07 18:19:24 +03:00
qed-cluster.c	block: Clean up includes	2016-01-20 13:36:23 +01:00
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: Convert bdrv_aio_writev() to BdrvChild	2016-07-05 16:46:26 +02:00
qed.c	coroutine: move entry argument to qemu_coroutine_create	2016-07-13 13:26:02 +02:00
qed.h	util: move declarations out of qemu-common.h	2016-03-22 22:20:17 +01:00
quorum.c	block: Convert bdrv_aio_writev() to BdrvChild	2016-07-05 16:46:26 +02:00
raw_bsd.c	raw_bsd: Convert to byte-based interface	2016-07-20 14:24:25 +01:00
raw-posix.c	block: Convert .bdrv_aio_discard() to byte-based	2016-07-20 14:11:55 +01:00
raw-win32.c	raw-posix: Switch paio_submit() to byte-based	2016-07-20 14:11:55 +01:00
rbd.c	block: Convert .bdrv_aio_discard() to byte-based	2016-07-20 14:11:55 +01:00
sheepdog.c	sheepdog: Switch .bdrv_co_discard() to byte-based	2016-07-20 14:24:25 +01:00
snapshot.c	error: Remove NULL checks on error_propagate() calls	2016-06-20 16:38:13 +02:00
ssh.c	block/ssh: Use QemuOpts for runtime options	2016-08-15 15:52:28 +02:00
stream.c	Improve block job rate limiting for small bandwidth values	2016-07-13 13:41:38 +02:00
throttle-groups.c	block: Move I/O throttling configuration functions to BlockBackend	2016-05-19 16:45:30 +02:00
trace-events	trace-events: fix first line comment in trace-events	2016-08-12 10:36:01 +01:00
vdi.c	block: Convert bdrv_co_preadv/pwritev to BdrvChild	2016-07-05 16:46:27 +02:00
vhdx-endian.c	qemu-common: stop including qemu/bswap.h from qemu-common.h	2016-05-19 16:42:28 +02:00
vhdx-log.c	block: Convert bdrv_pwrite(v/_sync) to BdrvChild	2016-07-05 16:46:27 +02:00
vhdx.c	block: Convert bdrv_pwrite(v/_sync) to BdrvChild	2016-07-05 16:46:27 +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	vmdk: fix metadata write regression	2016-07-13 13:41:39 +02:00
vpc.c	block: Convert bdrv_co_preadv/pwritev to BdrvChild	2016-07-05 16:46:27 +02:00
vvfat.c	vvfat: Fix qcow write target driver specification	2016-07-13 13:41:39 +02:00
win32-aio.c	linux-aio: share one LinuxAioState within an AioContext	2016-07-18 15:09:31 +01:00
write-threshold.c	block: Clean up includes	2016-01-20 13:36:23 +01:00