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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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6
block/parallels.c
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@ -200,7 +200,7 @@ static int mark_used(BlockDriverState *bs, unsigned long *bitmap,
* bitmap anyway, as much as we can. This information will be used for
* error resolution.
*/
static int parallels_fill_used_bitmap(BlockDriverState *bs)
static int GRAPH_RDLOCK parallels_fill_used_bitmap(BlockDriverState *bs)
{
BDRVParallelsState *s = bs->opaque;
int64_t payload_bytes;
@ -1185,7 +1185,7 @@ static int parallels_probe(const uint8_t *buf, int buf_size,
return 0;
}
static int parallels_update_header(BlockDriverState *bs)
static int GRAPH_RDLOCK parallels_update_header(BlockDriverState *bs)
{
BDRVParallelsState *s = bs->opaque;
unsigned size = MAX(bdrv_opt_mem_align(bs->file->bs),
@ -1428,6 +1428,8 @@ static void parallels_close(BlockDriverState *bs)
{
BDRVParallelsState *s = bs->opaque;
GRAPH_RDLOCK_GUARD_MAINLOOP();
if ((bs->open_flags & BDRV_O_RDWR) && !(bs->open_flags & BDRV_O_INACTIVE)) {
s->header->inuse = 0;
parallels_update_header(bs);