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4f384011c5
qemu/block
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Stefan Hajnoczi 4f384011c5 block: pass size to bdrv_unregister_buf() 
The only implementor of bdrv_register_buf() is block/nvme.c, where the
size is not needed when unregistering a buffer. This is because
util/vfio-helpers.c can look up mappings by address.

Future block drivers that implement bdrv_register_buf() may not be able
to do their job given only the buffer address. Add a size argument to
bdrv_unregister_buf().

Also document the assumptions about
bdrv_register_buf()/bdrv_unregister_buf() calls. The same <host, size>
values that were given to bdrv_register_buf() must be given to
bdrv_unregister_buf().

gcc 11.2.1 emits a spurious warning that img_bench()'s buf_size local
variable might be uninitialized, so it's necessary to silence the
compiler.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20221013185908.1297568-5-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-10-26 14:56:42 -04:00
..
export block: Change blk_{pread,pwrite}() param order 2022-07-12 12:14:56 +02:00
monitor monitor: expose monitor_puts to rest of code 2022-10-06 11:53:40 +01:00
accounting.c block: add missed block_acct_setup with new block device init procedure 2022-09-30 18:42:34 +02:00
aio_task.c block/aio_task: assert max_busy_tasks is greater than 0 2021-10-05 18:56:41 +02:00
amend.c block/amend: Keep strong reference to BDS 2022-03-04 18:18:26 +01:00
backup.c block: simplify handling of try to merge different sized bitmaps 2022-06-24 17:07:06 +02:00
blkdebug.c block: use int64_t instead of int in driver discard handlers 2021-09-29 13:46:32 -05:00
blkio.c blkio: add libblkio block driver 2022-10-26 14:56:42 -04:00
blklogwrites.c block: Change bdrv_{pread,pwrite,pwrite_sync}() param order 2022-07-12 12:14:55 +02:00
blkreplay.c block: use int64_t instead of int in driver discard handlers 2021-09-29 13:46:32 -05:00
blkverify.c blkverify: add missing coroutine_fn annotations 2022-10-07 12:11:40 +02:00
block-backend.c block: pass size to bdrv_unregister_buf() 2022-10-26 14:56:42 -04:00
block-copy.c block/block-copy: block_copy(): add timeout_ns parameter 2022-06-29 10:56:12 +03:00
block-gen.h scripts: add block-coroutine-wrapper.py 2020-10-05 10:59:06 +01:00
bochs.c block: Change bdrv_{pread,pwrite,pwrite_sync}() param order 2022-07-12 12:14:55 +02:00
cloop.c block: Make bdrv_{pread,pwrite}() return 0 on success 2022-07-12 12:14:55 +02:00
commit.c block: Change blk_{pread,pwrite}() param order 2022-07-12 12:14:56 +02:00
copy-before-write.c copy-before-write: add missing coroutine_fn annotations 2022-10-07 12:11:41 +02:00
copy-before-write.h block/copy-before-write.h: global state API + assertions 2022-03-04 18:18:25 +01:00
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 Clean up ill-advised or unusual header guards 2022-05-11 16:50:01 +02:00
coroutines.h block: Remove remaining unused symbols in coroutines.h 2022-07-12 12:14:56 +02:00
create.c block_int-common.h: assertions in the callers of BlockDriver function pointers 2022-03-04 18:18:25 +01:00
crypto.c block: Change blk_{pread,pwrite}() param order 2022-07-12 12:14:56 +02:00
crypto.h nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
curl.c curl: add missing coroutine_fn annotations 2022-10-07 12:11:41 +02:00
dirty-bitmap.c block: simplify handling of try to merge different sized bitmaps 2022-06-24 17:07:06 +02:00
dmg-bz2.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
dmg-lzfse.c block: Remove unused include 2020-11-09 15:44:21 +01:00
dmg.c block: Make bdrv_{pread,pwrite}() return 0 on success 2022-07-12 12:14:55 +02:00
dmg.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
file-posix.c file-posix: Remove unused s->discard_zeroes 2022-10-07 12:11:41 +02:00
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 gluster: stop using .bdrv_needs_filename 2022-09-30 18:43:44 +02:00
io_uring.c block/io_uring: add missing include file 2022-08-02 11:01:24 +02:00
io.c block: pass size to bdrv_unregister_buf() 2022-10-26 14:56:42 -04:00
iscsi-opts.c modules: add block module annotations 2021-07-09 18:20:27 +02:00
iscsi.c iscsi: add missing coroutine_fn annotations 2022-10-07 12:11:40 +02:00
linux-aio.c misc: fix commonly doubled up words 2022-08-01 11:58:02 +02:00
meson.build blkio: add libblkio block driver 2022-10-26 14:56:42 -04:00
mirror.c blockjob: protect iostatus field in BlockJob struct 2022-10-07 12:11:41 +02:00
nbd.c nbd: add missing coroutine_fn annotations 2022-10-07 12:11:40 +02:00
nfs.c nfs: add missing coroutine_fn annotations 2022-10-07 12:11:40 +02:00
null.c block: use int64_t instead of uint64_t in driver write handlers 2021-09-29 13:46:31 -05:00
nvme.c block: pass size to bdrv_unregister_buf() 2022-10-26 14:56:42 -04:00
parallels-ext.c block: Change bdrv_{pread,pwrite,pwrite_sync}() param order 2022-07-12 12:14:55 +02:00
parallels.c parallels: add missing coroutine_fn annotations 2022-10-07 12:11:40 +02:00
parallels.h parallels: support bitmap extension for read-only mode 2021-03-08 14:56:55 +01:00
preallocate.c block: fix preallocate filter: don't do unaligned preallocate requests 2022-03-07 09:19:20 +01:00
progress_meter.c progressmeter: protect with a mutex 2021-06-25 14:24:24 +03:00
qapi-sysemu.c block: add 'force' parameter to 'blockdev-change-medium' command 2022-04-25 12:02:36 +02:00
qapi.c block: use GDateTime for formatting timestamp when dumping snapshot info 2021-06-14 13:28:50 +01:00
qcow2-bitmap.c block/qcow2-bitmap: Add missing cast to silent GCC error 2022-09-30 18:02:30 +02:00
qcow2-cache.c block: Change bdrv_{pread,pwrite,pwrite_sync}() param order 2022-07-12 12:14:55 +02:00
qcow2-cluster.c qcow2: add missing coroutine_fn annotations 2022-10-07 12:11:40 +02:00
qcow2-refcount.c qcow2: add missing coroutine_fn annotations 2022-10-07 12:11:40 +02:00
qcow2-snapshot.c block: Use bdrv_co_pwrite_sync() when caller is coroutine_fn 2022-07-12 12:14:56 +02:00
qcow2-threads.c qcow2: add zstd cluster compression 2020-05-13 14:20:31 +02:00
qcow2.c qcow2: add missing coroutine_fn annotations 2022-10-07 12:11:40 +02:00
qcow2.h qcow2: add missing coroutine_fn annotations 2022-10-07 12:11:40 +02:00
qcow.c block: Change blk_{pread,pwrite}() param order 2022-07-12 12:14:56 +02:00
qed-check.c block/qed: add missed coroutine_fn markers 2019-04-30 15:29:00 +02:00
qed-cluster.c qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
qed-l2-cache.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
qed-table.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
qed.c qed: add missing coroutine_fn annotations 2022-10-07 12:11:41 +02:00
qed.h qed: Simplify backing reads 2020-07-06 10:34:14 +02:00
quorum.c quorum: Remove unnecessary forward declaration 2022-10-07 12:11:41 +02:00
raw-format.c raw-format: add missing coroutine_fn annotations 2022-10-07 12:11:41 +02:00
rbd.c block/rbd: report a better error when namespace does not exist 2022-06-24 17:07:06 +02:00
replication.c job.c: enable job lock/unlock and remove Aiocontext locks 2022-10-07 12:11:41 +02:00
reqlist.c block/reqlist: add reqlist_wait_all() 2022-03-07 09:33:30 +01:00
snapshot-access.c block: introduce snapshot-access block driver 2022-03-07 09:33:31 +01:00
snapshot.c include/block/snapshot: global state API + assertions 2022-03-04 18:18:25 +01:00
ssh.c Replace GCC_FMT_ATTR with G_GNUC_PRINTF 2022-03-22 14:40:51 +04:00
stream.c block/stream: Drain subtree around graph change 2022-03-29 16:30:55 +02:00
throttle-groups.c block/throttle-groups: throttle_group_co_io_limits_intercept(): 64bit bytes 2021-02-03 08:14:00 -06:00
throttle.c throttle: add missing coroutine_fn annotations 2022-10-07 12:11:41 +02:00
trace-events nbd: trace long NBD operations 2022-06-29 10:57:02 +03:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vdi.c block: Change blk_{pread,pwrite}() param order 2022-07-12 12:14:56 +02:00
vhdx-endian.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
vhdx-log.c block: Change bdrv_{pread,pwrite,pwrite_sync}() param order 2022-07-12 12:14:55 +02:00
vhdx.c block: Change blk_{pread,pwrite}() param order 2022-07-12 12:14:56 +02:00
vhdx.h block/vhdx: Use IEC binary prefixes for size constants 2019-04-30 15:29:00 +02:00
vmdk.c vmdk: add missing coroutine_fn annotations 2022-10-07 12:11:41 +02:00
vpc.c block: Change blk_{pread,pwrite}() param order 2022-07-12 12:14:56 +02:00
vvfat.c block: Change bdrv_{pread,pwrite,pwrite_sync}() param order 2022-07-12 12:14:55 +02:00
win32-aio.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
write-threshold.c write-threshold: deal with includes 2021-05-14 16:14:10 +02:00