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| author | Peter Maydell <peter.maydell@linaro.org> | 2019-06-04 17:22:42 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2019-06-04 17:22:42 +0100 |
| commit | 47fbad45d47af8af784bb12a5719489edcd89b4c (patch) | |
| tree | ece331a0cbb247b6c9b71bb4fe6ed0808a2050aa /docs | |
| parent | e2a58ff493a2e00db3e963c1839c5374500110f2 (diff) | |
| parent | 11ba81c3cde0bc070cced6e8ef2835fab4fe90c8 (diff) | |
| download | focaccia-qemu-47fbad45d47af8af784bb12a5719489edcd89b4c.tar.gz focaccia-qemu-47fbad45d47af8af784bb12a5719489edcd89b4c.zip | |
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Block layer patches: - block: AioContext management, part 2 - Avoid recursive block_status call (i.e. lseek() calls) if possible - linux-aio: Drop unused BlockAIOCB submission method - nvme: add Get/Set Feature Timestamp support - Fix crash on commit job start with active I/O on base node - Fix crash in bdrv_drained_end - Fix integer overflow in qcow2 discard # gpg: Signature made Tue 04 Jun 2019 16:20:02 BST # gpg: using RSA key 7F09B272C88F2FD6 # gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full] # Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6 * remotes/kevin/tags/for-upstream: (29 commits) iotests: Fix duplicated diff output on failure iotests: test big qcow2 shrink block/io: bdrv_pdiscard: support int64_t bytes parameter block/qcow2-refcount: add trace-point to qcow2_process_discards block: Remove bdrv_set_aio_context() test-bdrv-drain: Use bdrv_try_set_aio_context() iotests: Attach new devices to node in non-default iothread virtio-scsi-test: Test attaching new overlay with iothreads block: Remove wrong bdrv_set_aio_context() calls blockdev: Use bdrv_try_set_aio_context() for monitor commands block: Move node without parents to main AioContext test-block-iothread: BlockBackend AioContext across root node change test-block-iothread: Test adding parent to iothread node block: Adjust AioContexts when attaching nodes scsi-disk: Use qdev_prop_drive_iothread block: Add qdev_prop_drive_iothread property type block: Add BlockBackend.ctx block: Add Error to blk_set_aio_context() nbd-server: Call blk_set_allow_aio_context_change() test-block-iothread: Check filter node in test_propagate_mirror ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/devel/multiple-iothreads.txt | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/docs/devel/multiple-iothreads.txt b/docs/devel/multiple-iothreads.txt index 4f9012d154..aeb997bed5 100644 --- a/docs/devel/multiple-iothreads.txt +++ b/docs/devel/multiple-iothreads.txt @@ -109,7 +109,7 @@ The AioContext originates from the QEMU block layer, even though nowadays AioContext is a generic event loop that can be used by any QEMU subsystem. The block layer has support for AioContext integrated. Each BlockDriverState -is associated with an AioContext using bdrv_set_aio_context() and +is associated with an AioContext using bdrv_try_set_aio_context() and bdrv_get_aio_context(). This allows block layer code to process I/O inside the right AioContext. Other subsystems may wish to follow a similar approach. @@ -134,5 +134,5 @@ Long-running jobs (usually in the form of coroutines) are best scheduled in the BlockDriverState's AioContext to avoid the need to acquire/release around each bdrv_*() call. The functions bdrv_add/remove_aio_context_notifier, or alternatively blk_add/remove_aio_context_notifier if you use BlockBackends, -can be used to get a notification whenever bdrv_set_aio_context() moves a +can be used to get a notification whenever bdrv_try_set_aio_context() moves a BlockDriverState to a different AioContext. |