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| author | Stefan Hajnoczi <stefanha@redhat.com> | 2023-09-12 19:10:37 -0400 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2023-12-21 22:49:28 +0100 |
| commit | c12887e1b087e8f69d217ccae3dc7b1d059f3db3 (patch) | |
| tree | f7e3a98d7b793b3a6ac9f7054922c5588476bc91 /docs/sphinx-static | |
| parent | 23c983c8f6b2fea22698f501aa6a2c03dadd81ba (diff) | |
block-coroutine-wrapper: use qemu_get_current_aio_context()
Use qemu_get_current_aio_context() in mixed wrappers and coroutine
wrappers so that code runs in the caller's AioContext instead of moving
to the BlockDriverState's AioContext. This change is necessary for the
multi-queue block layer where any thread can call into the block layer.
Most wrappers are IO_CODE where it's safe to use the current AioContext
nowadays. BlockDrivers and the core block layer use their own locks and
no longer depend on the AioContext lock for thread-safety.
The bdrv_create() wrapper invokes GLOBAL_STATE code. Using the current
AioContext is safe because this code is only called with the BQL held
from the main loop thread.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20230912231037.826804-6-stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'docs/sphinx-static')
0 files changed, 0 insertions, 0 deletions