diff options
| author | Stefan Hajnoczi <stefanha@redhat.com> | 2023-12-05 13:20:03 -0500 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2023-12-21 22:49:27 +0100 |
| commit | b49f4755c7fa35ea6e17e5b52c1cdaef6b4aa21c (patch) | |
| tree | 42f28762584421da298ba15cb21d027e002476bd /include/block | |
| parent | 6bc30f19498547fac9cef98316a65cf6c1f14205 (diff) | |
block: remove AioContext locking
This is the big patch that removes
aio_context_acquire()/aio_context_release() from the block layer and
affected block layer users.
There isn't a clean way to split this patch and the reviewers are likely
the same group of people, so I decided to do it in one patch.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Message-ID: <20231205182011.1976568-7-stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'include/block')
| -rw-r--r-- | include/block/block-global-state.h | 9 | ||||
| -rw-r--r-- | include/block/block-io.h | 3 | ||||
| -rw-r--r-- | include/block/snapshot.h | 2 |
3 files changed, 5 insertions, 9 deletions
diff --git a/include/block/block-global-state.h b/include/block/block-global-state.h index 6b21fbc73f..0327f1c605 100644 --- a/include/block/block-global-state.h +++ b/include/block/block-global-state.h @@ -31,11 +31,10 @@ /* * Global state (GS) API. These functions run under the BQL. * - * If a function modifies the graph, it also uses drain and/or - * aio_context_acquire/release to be sure it has unique access. - * aio_context locking is needed together with BQL because of - * the thread-safe I/O API that concurrently runs and accesses - * the graph without the BQL. + * If a function modifies the graph, it also uses the graph lock to be sure it + * has unique access. The graph lock is needed together with BQL because of the + * thread-safe I/O API that concurrently runs and accesses the graph without + * the BQL. * * It is important to note that not all of these functions are * necessarily limited to running under the BQL, but they would diff --git a/include/block/block-io.h b/include/block/block-io.h index f8729ccc55..8eb39a858b 100644 --- a/include/block/block-io.h +++ b/include/block/block-io.h @@ -31,8 +31,7 @@ /* * I/O API functions. These functions are thread-safe, and therefore - * can run in any thread as long as the thread has called - * aio_context_acquire/release(). + * can run in any thread. * * These functions can only call functions from I/O and Common categories, * but can be invoked by GS, "I/O or GS" and I/O APIs. diff --git a/include/block/snapshot.h b/include/block/snapshot.h index d49c5599d9..304cc6ea61 100644 --- a/include/block/snapshot.h +++ b/include/block/snapshot.h @@ -86,8 +86,6 @@ int bdrv_snapshot_load_tmp_by_id_or_name(BlockDriverState *bs, /* * Group operations. All block drivers are involved. - * These functions will properly handle dataplane (take aio_context_acquire - * when appropriate for appropriate block drivers */ bool bdrv_all_can_snapshot(bool has_devices, strList *devices, |