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block: remove AioContext locking

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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>
This commit is contained in:
Stefan Hajnoczi 2023-12-05 13:20:03 -05:00 • committed by Kevin Wolf
parent 6bc30f1949
commit b49f4755c7
41 changed files with 104 additions and 1169 deletions
Download patch file Download diff file Expand all files Collapse all files

9
hw/core/qdev-properties-system.c
View file

@ -120,9 +120,7 @@ static void set_drive_helper(Object *obj, Visitor *v, const char *name,
"node");
}
aio_context_acquire(ctx);
blk_replace_bs(blk, bs, errp);
aio_context_release(ctx);
return;
}
@ -148,10 +146,7 @@ static void set_drive_helper(Object *obj, Visitor *v, const char *name,
0, BLK_PERM_ALL);
blk_created = true;
aio_context_acquire(ctx);
ret = blk_insert_bs(blk, bs, errp);
aio_context_release(ctx);
if (ret < 0) {
goto fail;
}
@ -207,12 +202,8 @@ static void release_drive(Object *obj, const char *name, void *opaque)
BlockBackend **ptr = object_field_prop_ptr(obj, prop);
if (*ptr) {
AioContext *ctx = blk_get_aio_context(*ptr);
aio_context_acquire(ctx);
blockdev_auto_del(*ptr);
blk_detach_dev(*ptr, dev);
aio_context_release(ctx);
}
}