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block: Mark bdrv_refresh_filename() and callers GRAPH_RDLOCK

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This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_refresh_filename() need to hold a reader lock for the graph
because it accesses the children list of a node.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20230929145157.45443-11-kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2023-09-29 16:51:45 +02:00
parent 15f3f1fe57
commit b7cfc7d58e
12 changed files with 101 additions and 47 deletions
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4
qemu-img.c
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@ -3165,7 +3165,9 @@ static int get_block_status(BlockDriverState *bs, int64_t offset,
has_offset = !!(ret & BDRV_BLOCK_OFFSET_VALID);
if (file && has_offset) {
bdrv_graph_rdlock_main_loop();
bdrv_refresh_filename(file);
bdrv_graph_rdunlock_main_loop();
filename = file->filename;
}
@ -3688,7 +3690,9 @@ static int img_rebase(int argc, char **argv)
qdict_put_bool(options, BDRV_OPT_FORCE_SHARE, true);
}
bdrv_graph_rdlock_main_loop();
bdrv_refresh_filename(bs);
bdrv_graph_rdunlock_main_loop();
overlay_filename = bs->exact_filename[0] ? bs->exact_filename
: bs->filename;
out_real_path =