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graph-lock: remove AioContext locking

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Stop acquiring/releasing the AioContext lock in
bdrv_graph_wrlock()/bdrv_graph_unlock() since the lock no longer has any
effect.

The distinction between bdrv_graph_wrunlock() and
bdrv_graph_wrunlock_ctx() becomes meaningless and they can be collapsed
into one function.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231205182011.1976568-6-stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Stefan Hajnoczi
2023-12-05 13:20:02 -05:00
committed by Kevin Wolf
parent b5f4fda4fb
commit 6bc30f1949
20 changed files with 133 additions and 193 deletions
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8
blockdev.c
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@ -1611,9 +1611,9 @@ static void external_snapshot_abort(void *opaque)
}
bdrv_drained_begin(state->new_bs);
bdrv_graph_wrlock(state->old_bs);
bdrv_graph_wrlock();
bdrv_replace_node(state->new_bs, state->old_bs, &error_abort);
bdrv_graph_wrunlock(state->old_bs);
bdrv_graph_wrunlock();
bdrv_drained_end(state->new_bs);
bdrv_unref(state->old_bs); /* bdrv_replace_node() ref'ed old_bs */
@ -3657,7 +3657,7 @@ void qmp_x_blockdev_change(const char *parent, const char *child,
BlockDriverState *parent_bs, *new_bs = NULL;
BdrvChild *p_child;
bdrv_graph_wrlock(NULL);
bdrv_graph_wrlock();
parent_bs = bdrv_lookup_bs(parent, parent, errp);
if (!parent_bs) {
@ -3693,7 +3693,7 @@ void qmp_x_blockdev_change(const char *parent, const char *child,
}
out:
bdrv_graph_wrunlock(NULL);
bdrv_graph_wrunlock();
}
BlockJobInfoList *qmp_query_block_jobs(Error **errp)