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| author | Emanuele Giuseppe Esposito <eesposit@redhat.com> | 2023-05-04 13:57:46 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2023-05-10 14:16:54 +0200 |
| commit | 840428a2669c90f75cf0d26a06bdfe6f51755fae (patch) | |
| tree | 6fb540d83417aa37ed31349eb72b06d05b910c87 /block/amend.c | |
| parent | cb2bfaa450dd65b717e27c9090169be05bd73b93 (diff) | |
| download | qemu-840428a2669c90f75cf0d26a06bdfe6f51755fae.zip qemu-840428a2669c90f75cf0d26a06bdfe6f51755fae.tar.gz qemu-840428a2669c90f75cf0d26a06bdfe6f51755fae.tar.bz2 | |
block: Mark BlockDriver callbacks for amend job GRAPH_RDLOCK
This adds GRAPH_RDLOCK annotations to declare that callers of amend
callbacks in BlockDriver need to hold a reader lock for the graph.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20230504115750.54437-17-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/amend.c')
| -rw-r--r-- | block/amend.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/block/amend.c b/block/amend.c index bc4bb7b..53a4102 100644 --- a/block/amend.c +++ b/block/amend.c @@ -46,6 +46,7 @@ static int coroutine_fn blockdev_amend_run(Job *job, Error **errp) { BlockdevAmendJob *s = container_of(job, BlockdevAmendJob, common); int ret; + GRAPH_RDLOCK_GUARD(); job_progress_set_remaining(&s->common, 1); ret = s->bs->drv->bdrv_co_amend(s->bs, s->opts, s->force, errp); @@ -54,7 +55,8 @@ static int coroutine_fn blockdev_amend_run(Job *job, Error **errp) return ret; } -static int blockdev_amend_pre_run(BlockdevAmendJob *s, Error **errp) +static int GRAPH_RDLOCK +blockdev_amend_pre_run(BlockdevAmendJob *s, Error **errp) { if (s->bs->drv->bdrv_amend_pre_run) { return s->bs->drv->bdrv_amend_pre_run(s->bs, errp); @@ -67,9 +69,11 @@ static void blockdev_amend_free(Job *job) { BlockdevAmendJob *s = container_of(job, BlockdevAmendJob, common); + bdrv_graph_rdlock_main_loop(); if (s->bs->drv->bdrv_amend_clean) { s->bs->drv->bdrv_amend_clean(s->bs); } + bdrv_graph_rdunlock_main_loop(); bdrv_unref(s->bs); } @@ -93,6 +97,8 @@ void qmp_x_blockdev_amend(const char *job_id, BlockDriver *drv = bdrv_find_format(fmt); BlockDriverState *bs; + GRAPH_RDLOCK_GUARD_MAINLOOP(); + bs = bdrv_lookup_bs(NULL, node_name, errp); if (!bs) { return; |