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authorMax Reitz <mreitz@redhat.com>2016-05-17 13:38:04 +0200
committerKevin Wolf <kwolf@redhat.com>2016-05-19 16:45:31 +0200
commitb97511c7bc88bc487cacbfab349eb6023ae4f49b (patch)
treea66bd28420c031273e74416a90f2eb923347dada
parent1f0c461b82d5ec2664ca0cfc9548f80da87a8f8a (diff)
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block: Propagate AioContext change to all children
Instead of propagating any change of a BDS's AioContext only to its file and backing children and letting driver-specific code do the rest, just propagate it to all and drop the thus superfluous implementations of bdrv_{at,de}tach_aio_context() in Quorum, blkverify and VMDK. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
-rw-r--r--block.c16
-rw-r--r--block/blkverify.c19
-rw-r--r--block/quorum.c24
-rw-r--r--block/vmdk.c23
4 files changed, 6 insertions, 76 deletions
diff --git a/block.c b/block.c
index cbc10f7..1205ef8 100644
--- a/block.c
+++ b/block.c
@@ -3609,6 +3609,7 @@ AioContext *bdrv_get_aio_context(BlockDriverState *bs)
void bdrv_detach_aio_context(BlockDriverState *bs)
{
BdrvAioNotifier *baf;
+ BdrvChild *child;
if (!bs->drv) {
return;
@@ -3621,11 +3622,8 @@ void bdrv_detach_aio_context(BlockDriverState *bs)
if (bs->drv->bdrv_detach_aio_context) {
bs->drv->bdrv_detach_aio_context(bs);
}
- if (bs->file) {
- bdrv_detach_aio_context(bs->file->bs);
- }
- if (bs->backing) {
- bdrv_detach_aio_context(bs->backing->bs);
+ QLIST_FOREACH(child, &bs->children, next) {
+ bdrv_detach_aio_context(child->bs);
}
bs->aio_context = NULL;
@@ -3635,6 +3633,7 @@ void bdrv_attach_aio_context(BlockDriverState *bs,
AioContext *new_context)
{
BdrvAioNotifier *ban;
+ BdrvChild *child;
if (!bs->drv) {
return;
@@ -3642,11 +3641,8 @@ void bdrv_attach_aio_context(BlockDriverState *bs,
bs->aio_context = new_context;
- if (bs->backing) {
- bdrv_attach_aio_context(bs->backing->bs, new_context);
- }
- if (bs->file) {
- bdrv_attach_aio_context(bs->file->bs, new_context);
+ QLIST_FOREACH(child, &bs->children, next) {
+ bdrv_attach_aio_context(child->bs, new_context);
}
if (bs->drv->bdrv_attach_aio_context) {
bs->drv->bdrv_attach_aio_context(bs, new_context);
diff --git a/block/blkverify.c b/block/blkverify.c
index 9414b7a..4045396 100644
--- a/block/blkverify.c
+++ b/block/blkverify.c
@@ -293,22 +293,6 @@ static bool blkverify_recurse_is_first_non_filter(BlockDriverState *bs,
return bdrv_recurse_is_first_non_filter(s->test_file->bs, candidate);
}
-/* Propagate AioContext changes to ->test_file */
-static void blkverify_detach_aio_context(BlockDriverState *bs)
-{
- BDRVBlkverifyState *s = bs->opaque;
-
- bdrv_detach_aio_context(s->test_file->bs);
-}
-
-static void blkverify_attach_aio_context(BlockDriverState *bs,
- AioContext *new_context)
-{
- BDRVBlkverifyState *s = bs->opaque;
-
- bdrv_attach_aio_context(s->test_file->bs, new_context);
-}
-
static void blkverify_refresh_filename(BlockDriverState *bs, QDict *options)
{
BDRVBlkverifyState *s = bs->opaque;
@@ -356,9 +340,6 @@ static BlockDriver bdrv_blkverify = {
.bdrv_aio_writev = blkverify_aio_writev,
.bdrv_aio_flush = blkverify_aio_flush,
- .bdrv_attach_aio_context = blkverify_attach_aio_context,
- .bdrv_detach_aio_context = blkverify_detach_aio_context,
-
.is_filter = true,
.bdrv_recurse_is_first_non_filter = blkverify_recurse_is_first_non_filter,
};
diff --git a/block/quorum.c b/block/quorum.c
index 1ec3511..ec6f3b9 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -989,27 +989,6 @@ static void quorum_close(BlockDriverState *bs)
g_free(s->children);
}
-static void quorum_detach_aio_context(BlockDriverState *bs)
-{
- BDRVQuorumState *s = bs->opaque;
- int i;
-
- for (i = 0; i < s->num_children; i++) {
- bdrv_detach_aio_context(s->children[i]->bs);
- }
-}
-
-static void quorum_attach_aio_context(BlockDriverState *bs,
- AioContext *new_context)
-{
- BDRVQuorumState *s = bs->opaque;
- int i;
-
- for (i = 0; i < s->num_children; i++) {
- bdrv_attach_aio_context(s->children[i]->bs, new_context);
- }
-}
-
static void quorum_add_child(BlockDriverState *bs, BlockDriverState *child_bs,
Error **errp)
{
@@ -1127,9 +1106,6 @@ static BlockDriver bdrv_quorum = {
.bdrv_aio_readv = quorum_aio_readv,
.bdrv_aio_writev = quorum_aio_writev,
- .bdrv_detach_aio_context = quorum_detach_aio_context,
- .bdrv_attach_aio_context = quorum_attach_aio_context,
-
.bdrv_add_child = quorum_add_child,
.bdrv_del_child = quorum_del_child,
diff --git a/block/vmdk.c b/block/vmdk.c
index e6c97c2..5b3b067 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -2343,27 +2343,6 @@ static int vmdk_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
return 0;
}
-static void vmdk_detach_aio_context(BlockDriverState *bs)
-{
- BDRVVmdkState *s = bs->opaque;
- int i;
-
- for (i = 0; i < s->num_extents; i++) {
- bdrv_detach_aio_context(s->extents[i].file->bs);
- }
-}
-
-static void vmdk_attach_aio_context(BlockDriverState *bs,
- AioContext *new_context)
-{
- BDRVVmdkState *s = bs->opaque;
- int i;
-
- for (i = 0; i < s->num_extents; i++) {
- bdrv_attach_aio_context(s->extents[i].file->bs, new_context);
- }
-}
-
static QemuOptsList vmdk_create_opts = {
.name = "vmdk-create-opts",
.head = QTAILQ_HEAD_INITIALIZER(vmdk_create_opts.head),
@@ -2433,8 +2412,6 @@ static BlockDriver bdrv_vmdk = {
.bdrv_get_specific_info = vmdk_get_specific_info,
.bdrv_refresh_limits = vmdk_refresh_limits,
.bdrv_get_info = vmdk_get_info,
- .bdrv_detach_aio_context = vmdk_detach_aio_context,
- .bdrv_attach_aio_context = vmdk_attach_aio_context,
.supports_backing = true,
.create_opts = &vmdk_create_opts,