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block: Protect bs->file with graph_lock

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Almost all functions that access bs->file already take the graph
lock now. Add locking to the remaining users and finally annotate the
struct field itself as protected by the graph lock.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231027155333.420094-25-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2023-10-27 17:53:33 +02:00
parent a4b740db5e
commit 1f051dcbdf
15 changed files with 97 additions and 41 deletions
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12
block/qed.c
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@ -612,7 +612,7 @@ static int bdrv_qed_reopen_prepare(BDRVReopenState *state,
return 0;
}
static void bdrv_qed_close(BlockDriverState *bs)
static void GRAPH_RDLOCK bdrv_qed_do_close(BlockDriverState *bs)
{
BDRVQEDState *s = bs->opaque;
@ -631,6 +631,14 @@ static void bdrv_qed_close(BlockDriverState *bs)
qemu_vfree(s->l1_table);
}
static void GRAPH_UNLOCKED bdrv_qed_close(BlockDriverState *bs)
{
GLOBAL_STATE_CODE();
GRAPH_RDLOCK_GUARD_MAINLOOP();
bdrv_qed_do_close(bs);
}
static int coroutine_fn GRAPH_UNLOCKED
bdrv_qed_co_create(BlockdevCreateOptions *opts, Error **errp)
{
@ -1574,7 +1582,7 @@ bdrv_qed_co_invalidate_cache(BlockDriverState *bs, Error **errp)
BDRVQEDState *s = bs->opaque;
int ret;
bdrv_qed_close(bs);
bdrv_qed_do_close(bs);
bdrv_qed_init_state(bs);
qemu_co_mutex_lock(&s->table_lock);