On 24/10/2023 12.37, Markus Armbruster wrote:
Markus Armbruster <arm...@redhat.com> writes:
Thomas Huth <th...@redhat.com> writes:
No need to declare a new variable in the the inner code block
here, we can re-use the "ret" variable that has been declared
at the beginning of the function. With this change, the code
can now be successfully compiled with -Wshadow=local again.
Fixes: a32e781838 ("Mark bdrv_snapshot_fallback() and callers GRAPH_RDLOCK")
Signed-off-by: Thomas Huth <th...@redhat.com>
---
v2: Assign "ret" only in one spot
block/snapshot.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/block/snapshot.c b/block/snapshot.c
index 6e16eb803a..55974273ae 100644
--- a/block/snapshot.c
+++ b/block/snapshot.c
@@ -629,7 +629,6 @@ int bdrv_all_goto_snapshot(const char *name,
while (iterbdrvs) {
BlockDriverState *bs = iterbdrvs->data;
AioContext *ctx = bdrv_get_aio_context(bs);
- int ret = 0;
bool all_snapshots_includes_bs;
aio_context_acquire(ctx);
@@ -637,9 +636,8 @@ int bdrv_all_goto_snapshot(const char *name,
all_snapshots_includes_bs = bdrv_all_snapshots_includes_bs(bs);
bdrv_graph_rdunlock_main_loop();
- if (devices || all_snapshots_includes_bs) {
- ret = bdrv_snapshot_goto(bs, name, errp);
- }
+ ret = (devices || all_snapshots_includes_bs) ?
+ bdrv_snapshot_goto(bs, name, errp) : 0;
aio_context_release(ctx);
if (ret < 0) {
bdrv_graph_rdlock_main_loop();
Better. Unconditional assignment to @ret right before it's checked is
how we should use @ret.
Reviewed-by: Markus Armbruster <arm...@redhat.com>
And queued. Thanks!
Mind if I drop the Fixes: tag? Nothing broken until we enable
-Wshadow=local...
Fine for me!
Thomas
