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block: mark change_aio_ctx() callback and instances as GRAPH_RDLOCK(_PTR)

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This is a small step in preparation to mark bdrv_drained_begin() as
GRAPH_UNLOCKED. More concretely, it is in preparation to move the
drain out of bdrv_change_aio_context() and marking that function as
GRAPH_RDLOCK.

Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20250530151125.955508-7-f.ebner@proxmox.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Fiona Ebner 2025-05-30 17:10:43 +02:00 • committed by Kevin Wolf
parent 3758733959
commit 844d550d09
4 changed files with 13 additions and 12 deletions
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7
block.c
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@ -1226,9 +1226,10 @@ static int bdrv_child_cb_inactivate(BdrvChild *child)
return 0;
}
static bool bdrv_child_cb_change_aio_ctx(BdrvChild *child, AioContext *ctx,
GHashTable *visited, Transaction *tran,
Error **errp)
static bool GRAPH_RDLOCK
bdrv_child_cb_change_aio_ctx(BdrvChild *child, AioContext *ctx,
GHashTable *visited, Transaction *tran,
Error **errp)
{
BlockDriverState *bs = child->opaque;
return bdrv_change_aio_context(bs, ctx, visited, tran, errp);