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Kevin Wolf 0152bf400f block: Don't notify parents in drain call chain 
This is in preparation for subtree drains, i.e. drained sections that
affect not only a single node, but recursively all child nodes, too.

Calling the parent callbacks for drain is pointless when we just came
from that parent node recursively and leads to multiple increases of
bs->quiesce_counter in a single drain call. Don't do it.

In order for this to work correctly, the parent callback must be called
for every bdrv_drain_begin/end() call, not only for the outermost one:

If we have a node N with two parents A and B, recursive draining of A
should cause the quiesce_counter of B to increase because its child N is
drained independently of B. If now B is recursively drained, too, A must
increase its quiesce_counter because N is drained independently of A
only now, even if N is going from quiesce_counter 1 to 2.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
 		2017-12-22 15:05:32 +01:00
..
Makefile.objs block: add throttle block filter driver 2017-09-06 10:12:02 +02:00
accounting.c
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backup.c backup: use copy_bitmap in incremental backup 2017-12-18 10:54:13 -05:00
blkdebug.c block: Align block status requests 2017-10-26 14:45:57 +02:00
blkreplay.c
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blkverify.c
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block-backend.c block: Don't request I/O permission with BDRV_O_NO_IO 2017-11-21 14:48:22 +01:00
bochs.c block: Deprecate bdrv_set_read_only() and users 2017-11-17 13:35:59 +01:00
cloop.c block: Deprecate bdrv_set_read_only() and users 2017-11-17 13:35:59 +01:00
commit.c blockjob: remove clock argument from block_job_sleep_ns 2017-11-29 15:11:02 +01:00
crypto.c block: support passthrough of BDRV_REQ_FUA in crypto driver 2017-10-06 16:30:47 +02:00
crypto.h
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curl.c block/curl: fix minor memory leaks 2017-12-18 15:44:39 -05:00
dirty-bitmap.c hbitmap: add next_zero function 2017-12-18 10:54:13 -05:00
dmg-bz2.c
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dmg.c block: Deprecate bdrv_set_read_only() and users 2017-11-17 13:35:59 +01:00
dmg.h block: remove "qemu/osdep.h" from header file 2017-12-18 17:07:02 +03:00
file-posix.c file-posix: Clear out first sector in hdev_create 2017-09-26 14:46:23 +02:00
file-win32.c qapi: Change data type of the FOO_lookup generated for enum FOO 2017-09-04 13:09:13 +02:00
gluster.c qapi: Change data type of the FOO_lookup generated for enum FOO 2017-09-04 13:09:13 +02:00
io.c block: Don't notify parents in drain call chain 2017-12-22 15:05:32 +01:00
iscsi-opts.c
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iscsi.c block/iscsi: only report an iSCSI Failure if we don't handle it gracefully 2017-12-21 09:30:32 +01:00
linux-aio.c
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mirror.c blockjob: remove clock argument from block_job_sleep_ns 2017-11-29 15:11:02 +01:00
nbd-client.c nbd: Don't crash when server reports NBD_CMD_READ failure 2017-11-17 08:02:45 -06:00
nbd-client.h nbd: Minimal structured read for client 2017-10-30 21:48:41 +01:00
nbd.c
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nfs.c block/nfs: fix nfs_client_open for filesize greater than 1TB 2017-11-29 15:28:15 +01:00
null.c coroutine: simplify co_aio_sleep_ns() prototype 2017-12-19 09:25:27 +00:00
parallels.c block/parallels: add migration blocker 2017-11-14 18:06:26 +01:00
qapi.c block: Guard against NULL bs->drv 2017-11-17 18:21:31 +01:00
qcow.c block: convert qcrypto_block_encrypt|decrypt to take bytes offset 2017-10-06 16:30:47 +02:00
qcow2-bitmap.c qcow2: Switch store_bitmap_data() to byte-based iteration 2017-10-06 16:28:58 +02:00
qcow2-cache.c qcow2: Fix overly broad madvise() 2017-11-17 18:21:31 +01:00
qcow2-cluster.c qcow2: Unaligned zero cluster in handle_alloc() 2017-11-17 18:21:30 +01:00
qcow2-refcount.c qcow2: Add bounds check to get_refblock_offset() 2017-11-17 18:21:31 +01:00
qcow2-snapshot.c
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qcow2.c qcow2: get rid of qcow2_backing_read1 routine 2017-12-22 15:03:41 +01:00
qcow2.h qcow2: get rid of qcow2_backing_read1 routine 2017-12-22 15:03:41 +01:00
qed-check.c
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qed-cluster.c qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
qed-l2-cache.c qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
qed-table.c qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
qed.c block: rename bdrv_co_drain to bdrv_co_drain_begin 2017-10-13 12:38:41 +01:00
qed.h qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
quorum.c qapi: Change data type of the FOO_lookup generated for enum FOO 2017-09-04 13:09:13 +02:00
raw-format.c block: remove unused bdrv_media_changed 2017-09-04 18:31:13 +02:00
rbd.c block: Deprecate bdrv_set_read_only() and users 2017-11-17 13:35:59 +01:00
replication.c block: Guard against NULL bs->drv 2017-11-17 18:21:31 +01:00
sheepdog.c Pull request 2017-12-20 11:30:55 +00:00
snapshot.c block: Error out on load_vm with active dirty bitmaps 2017-11-21 14:48:23 +01:00
ssh.c util: remove the obsolete non-blocking connect 2017-09-05 13:21:58 +01:00
stream.c blockjob: remove clock argument from block_job_sleep_ns 2017-11-29 15:11:02 +01:00
throttle-groups.c throttle-groups: forget timer and schedule next TGM on detach 2017-11-16 14:12:57 +00:00
throttle.c block/throttle.c: add bdrv_co_drain_begin/end callbacks 2017-10-13 12:38:41 +01:00
trace-events block: Make bdrv_round_to_clusters() signature more useful 2017-10-26 14:45:57 +02:00
vdi.c
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vhdx-endian.c
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vhdx-log.c vhdx: use QEMU_ALIGN_DOWN 2017-08-31 12:29:07 +02:00
vhdx.c block/vhdx.c: Don't blindly update the header 2017-11-14 18:06:25 +01:00
vhdx.h
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vmdk.c vmdk: Fix error handling/reporting of vmdk_check 2017-08-08 15:19:16 +02:00
vpc.c vpc: use DIV_ROUND_UP 2017-08-31 12:29:07 +02:00
vvfat.c block: Guard against NULL bs->drv 2017-11-17 18:21:31 +01:00
vxhs.c
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win32-aio.c
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write-threshold.c
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