Re: [Qemu-block] [PATCH v5 02/25] block: Use children list in bdrv_refresh_filename

[Alberto Garcia]

On Wed 21 Jun 2017 02:50:24 PM CEST, Max Reitz wrote:
> bdrv_refresh_filename() should invoke itself recursively on all
> children, not just on file.
>
> With that change, we can remove the manual invocations in blkverify,
> quorum, commit, and mirror.
>
> Signed-off-by: Max Reitz 

Reviewed-by: Alberto Garcia 

Berto

[Qemu-block] [PATCH v5 02/25] block: Use children list in bdrv_refresh_filename

[Max Reitz]

bdrv_refresh_filename() should invoke itself recursively on all
children, not just on file.

With that change, we can remove the manual invocations in blkverify,
quorum, commit, and mirror.

Signed-off-by: Max Reitz 
---
 block.c   | 9 +
 block/blkverify.c | 3 ---
 block/commit.c| 1 -
 block/mirror.c| 1 -
 block/quorum.c| 1 -
 5 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/block.c b/block.c
index fa1d06d..2926f53 100644
--- a/block.c
+++ b/block.c
@@ -4788,16 +4788,17 @@ static bool append_open_options(QDict *d, 
BlockDriverState *bs)
 void bdrv_refresh_filename(BlockDriverState *bs)
 {
 BlockDriver *drv = bs->drv;
+BdrvChild *child;
 QDict *opts;
 
 if (!drv) {
 return;
 }
 
-/* This BDS's file name will most probably depend on its file's name, so
- * refresh that first */
-if (bs->file) {
-bdrv_refresh_filename(bs->file->bs);
+/* This BDS's file name may depend on any of its children's file names, so
+ * refresh those first */
+QLIST_FOREACH(child, >children, next) {
+bdrv_refresh_filename(child->bs);
 }
 
 if (drv->bdrv_refresh_filename) {
diff --git a/block/blkverify.c b/block/blkverify.c
index 06369f9..b2ed8cd 100644
--- a/block/blkverify.c
+++ b/block/blkverify.c
@@ -281,9 +281,6 @@ static void blkverify_refresh_filename(BlockDriverState 
*bs, QDict *options)
 {
 BDRVBlkverifyState *s = bs->opaque;
 
-/* bs->file->bs has already been refreshed */
-bdrv_refresh_filename(s->test_file->bs);
-
 if (bs->file->bs->full_open_options
 && s->test_file->bs->full_open_options)
 {
diff --git a/block/commit.c b/block/commit.c
index 8c09c3d..7146e48 100644
--- a/block/commit.c
+++ b/block/commit.c
@@ -259,7 +259,6 @@ static int64_t coroutine_fn 
bdrv_commit_top_get_block_status(
 
 static void bdrv_commit_top_refresh_filename(BlockDriverState *bs, QDict *opts)
 {
-bdrv_refresh_filename(bs->backing->bs);
 pstrcpy(bs->exact_filename, sizeof(bs->exact_filename),
 bs->backing->bs->filename);
 }
diff --git a/block/mirror.c b/block/mirror.c
index db57bee..df6c8bb 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -1070,7 +1070,6 @@ static int coroutine_fn 
bdrv_mirror_top_pdiscard(BlockDriverState *bs,
 
 static void bdrv_mirror_top_refresh_filename(BlockDriverState *bs, QDict *opts)
 {
-bdrv_refresh_filename(bs->backing->bs);
 pstrcpy(bs->exact_filename, sizeof(bs->exact_filename),
 bs->backing->bs->filename);
 }
diff --git a/block/quorum.c b/block/quorum.c
index 1b2a8c3..f39b9e5 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -1087,7 +1087,6 @@ static void quorum_refresh_filename(BlockDriverState *bs, 
QDict *options)
 int i;
 
 for (i = 0; i < s->num_children; i++) {
-bdrv_refresh_filename(s->children[i]->bs);
 if (!s->children[i]->bs->full_open_options) {
 return;
 }
-- 
2.9.4