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Hanna Reitz 113b727ce7 block/io: Update BSC only if want_zero is true 
We update the block-status cache whenever we get new information from a
bdrv_co_block_status() call to the block driver.  However, if we have
passed want_zero=false to that call, it may flag areas containing zeroes
as data, and so we would update the block-status cache with wrong
information.

Therefore, we should not update the cache with want_zero=false.

Reported-by: Nir Soffer <nsoffer@redhat.com>
Fixes: 0bc329fbb00 ("block: block-status cache for data regions")
Reviewed-by: Nir Soffer <nsoffer@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220118170000.49423-2-hreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2022-01-28 16:52:40 -06:00
..
export
aio-posix: split poll check from ready handler
2022-01-12 17:09:39 +00:00
monitor
include/sysemu/blockdev.h: remove drive_mark_claimed_by_board and inline drive_def
2022-01-14 12:03:16 +01:00
accounting.c
…
aio_task.c
block/aio_task: assert max_busy_tasks is greater than 0
2021-10-05 18:56:41 +02:00
amend.c
…
backup.c
jobs: Give Job.force_cancel more meaning
2021-10-07 10:42:34 +02:00
blkdebug.c
block: use int64_t instead of int in driver discard handlers
2021-09-29 13:46:32 -05:00
blklogwrites.c
block: use int64_t instead of int in driver discard handlers
2021-09-29 13:46:32 -05:00
blkreplay.c
block: use int64_t instead of int in driver discard handlers
2021-09-29 13:46:32 -05:00
blkverify.c
block: use int64_t instead of uint64_t in driver write handlers
2021-09-29 13:46:31 -05:00
block-backend.c
block-backend: prevent dangling BDS pointers across aio_poll()
2022-01-14 12:03:16 +01:00
block-copy.c
…
block-gen.h
…
bochs.c
block: use int64_t instead of uint64_t in driver read handlers
2021-09-29 13:46:31 -05:00
cloop.c
block: use int64_t instead of uint64_t in driver read handlers
2021-09-29 13:46:31 -05:00
commit.c
block: drop BLK_PERM_GRAPH_MOD
2022-01-14 12:03:16 +01:00
copy-before-write.c
block: use int64_t instead of int in driver discard handlers
2021-09-29 13:46:32 -05:00
copy-before-write.h
…
copy-on-read.c
block: use int64_t instead of int in driver discard handlers
2021-09-29 13:46:32 -05:00
copy-on-read.h
…
coroutines.h
block-backend: drop blk_prw, use block-coroutine-wrapper
2021-10-15 15:53:24 -05:00
create.c
…
crypto.c
block: use int64_t instead of uint64_t in driver write handlers
2021-09-29 13:46:31 -05:00
crypto.h
…
curl.c
aio-posix: split poll check from ready handler
2022-01-12 17:09:39 +00:00
dirty-bitmap.c
…
dmg-bz2.c
…
dmg-lzfse.c
…
dmg.c
block: use int64_t instead of uint64_t in driver read handlers
2021-09-29 13:46:31 -05:00
dmg.h
…
file-posix.c
block/file-posix: Simplify the XFS_IOC_DIOINFO handling
2022-01-12 14:09:04 +01:00
file-win32.c
block: use int64_t instead of uint64_t in driver write handlers
2021-09-29 13:46:31 -05:00
filter-compress.c
block: use int64_t instead of int in driver discard handlers
2021-09-29 13:46:32 -05:00
gluster.c
block: use int64_t instead of int in driver discard handlers
2021-09-29 13:46:32 -05:00
io_uring.c
aio-posix: split poll check from ready handler
2022-01-12 17:09:39 +00:00
io.c
block/io: Update BSC only if want_zero is true
2022-01-28 16:52:40 -06:00
iscsi-opts.c
…
iscsi.c
aio-posix: split poll check from ready handler
2022-01-12 17:09:39 +00:00
linux-aio.c
aio-posix: split poll check from ready handler
2022-01-12 17:09:39 +00:00
meson.build
configure, meson: move libaio check to meson.build
2021-10-14 09:50:57 +02:00
mirror.c
block: drop BLK_PERM_GRAPH_MOD
2022-01-14 12:03:16 +01:00
nbd.c
nbd: allow reconnect on open, with corresponding new options
2021-12-21 14:52:06 +01:00
nfs.c
aio-posix: split poll check from ready handler
2022-01-12 17:09:39 +00:00
null.c
block: use int64_t instead of uint64_t in driver write handlers
2021-09-29 13:46:31 -05:00
nvme.c
aio-posix: split poll check from ready handler
2022-01-12 17:09:39 +00:00
parallels-ext.c
…
parallels.c
…
parallels.h
…
preallocate.c
block: use int64_t instead of int in driver discard handlers
2021-09-29 13:46:32 -05:00
progress_meter.c
…
qapi-sysemu.c
…
qapi.c
…
qcow2-bitmap.c
…
qcow2-cache.c
…
qcow2-cluster.c
qcow2: Silence clang -m32 compiler warning
2021-10-15 15:39:38 -05:00
qcow2-refcount.c
qcow2-refcount: check_refblocks(): add separate message for reserved
2021-09-15 18:42:38 +02:00
qcow2-snapshot.c
…
qcow2-threads.c
…
qcow2.c
block: use int64_t instead of int in driver discard handlers
2021-09-29 13:46:32 -05:00
qcow2.h
qcow2-refcount: check_refblocks(): add separate message for reserved
2021-09-15 18:42:38 +02:00
qcow.c
block: use int64_t instead of uint64_t in driver write handlers
2021-09-29 13:46:31 -05:00
qed-check.c
…
qed-cluster.c
…
qed-l2-cache.c
…
qed-table.c
…
qed.c
block: use int64_t instead of int in driver write_zeroes handlers
2021-09-29 13:46:32 -05:00
qed.h
…
quorum.c
block: use int64_t instead of int in driver write_zeroes handlers
2021-09-29 13:46:32 -05:00
raw-format.c
block: use int64_t instead of int in driver discard handlers
2021-09-29 13:46:32 -05:00
rbd.c
block/rbd: implement bdrv_co_block_status
2021-11-02 13:02:46 +01:00
replication.c
job: @force parameter for job_cancel_sync()
2021-10-07 10:42:09 +02:00
snapshot.c
…
ssh.c
aio-posix: split poll check from ready handler
2022-01-12 17:09:39 +00:00
stream.c
block/stream: add own blk
2021-12-28 15:18:54 +01:00
throttle-groups.c
…
throttle.c
block: use int64_t instead of int in driver discard handlers
2021-09-29 13:46:32 -05:00
trace-events
block/nvme: Display CQ/SQ pointer in nvme_free_queue_pair()
2021-11-02 15:49:12 +01:00
trace.h
…
vdi.c
block: use int64_t instead of uint64_t in driver write handlers
2021-09-29 13:46:31 -05:00
vhdx-endian.c
…
vhdx-log.c
…
vhdx.c
…
vhdx.h
…
vmdk.c
vmdk: allow specification of tools version
2021-11-02 12:47:51 +01:00
vpc.c
block/vpc: Add a sanity check that fixed-size images have the right type
2021-11-02 12:47:51 +01:00
vvfat.c
vvfat: Fix vvfat_write() for writes before the root directory
2022-01-14 12:03:16 +01:00
win32-aio.c
aio-posix: split poll check from ready handler
2022-01-12 17:09:39 +00:00
write-threshold.c
…