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bh=y4oIOOpzY0QP6g3ztpf4qjImiVu29vT8DWLV9l9bbvM=; b=Jma2N/vdQFMBSJfY543PO3jDmrvPlsqxw5JCNJPlK9yi/tndo8UDjECZYvQyEMCq7aIIOL bRERoxk5sYB4bxbN6RLz3bQNKwd5+cqD6h9SLMi4wF5hdPlaLuOZaNqw/yc54r5BB3YuJq PlFsu0A1f+XnU4uzTQyXQZyBs9fgpv8= X-MC-Unique: nDXb2nRyPiaQHlb6VbgLcA-1 From: Max Reitz To: qemu-block@nongnu.org Subject: [PATCH v4 24/34] block: Drop child_backing Date: Wed, 13 May 2020 13:05:34 +0200 Message-Id: <20200513110544.176672-25-mreitz@redhat.com> In-Reply-To: <20200513110544.176672-1-mreitz@redhat.com> References: <20200513110544.176672-1-mreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=207.211.31.120; envelope-from=mreitz@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/13 03:05:18 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , qemu-devel@nongnu.org, Max Reitz Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Signed-off-by: Max Reitz Reviewed-by: Eric Blake --- include/block/block_int.h | 1 - block.c | 60 ++------------------------------------- 2 files changed, 3 insertions(+), 58 deletions(-) diff --git a/include/block/block_int.h b/include/block/block_int.h index 4b09fa1124..0781d43af5 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -742,7 +742,6 @@ struct BdrvChildClass { =20 extern const BdrvChildClass child_of_bds; extern const BdrvChildClass child_file; -extern const BdrvChildClass child_backing; =20 struct BdrvChild { BlockDriverState *bs; diff --git a/block.c b/block.c index 131ae20ffc..d138a3c261 100644 --- a/block.c +++ b/block.c @@ -1215,15 +1215,6 @@ static void bdrv_backing_attach(BdrvChild *c) parent->backing_blocker); } =20 -/* XXX: Will be removed along with child_backing */ -static void bdrv_child_cb_attach_backing(BdrvChild *c) -{ - if (!(c->role & BDRV_CHILD_COW)) { - bdrv_backing_attach(c); - } - bdrv_child_cb_attach(c); -} - static void bdrv_backing_detach(BdrvChild *c) { BlockDriverState *parent =3D c->opaque; @@ -1234,28 +1225,6 @@ static void bdrv_backing_detach(BdrvChild *c) parent->backing_blocker =3D NULL; } =20 -/* XXX: Will be removed along with child_backing */ -static void bdrv_child_cb_detach_backing(BdrvChild *c) -{ - if (!(c->role & BDRV_CHILD_COW)) { - bdrv_backing_detach(c); - } - bdrv_child_cb_detach(c); -} - -/* - * Returns the options and flags that bs->backing should get, based on the - * given options and flags for the parent BDS - */ -static void bdrv_backing_options(BdrvChildRole role, bool parent_is_format, - int *child_flags, QDict *child_options, - int parent_flags, QDict *parent_options) -{ - bdrv_inherited_options(BDRV_CHILD_COW, true, - child_flags, child_options, - parent_flags, parent_options); -} - static int bdrv_backing_update_filename(BdrvChild *c, BlockDriverState *ba= se, const char *filename, Error **errp) { @@ -1283,21 +1252,6 @@ static int bdrv_backing_update_filename(BdrvChild *c= , BlockDriverState *base, return ret; } =20 -const BdrvChildClass child_backing =3D { - .parent_is_bds =3D true, - .get_parent_desc =3D bdrv_child_get_parent_desc, - .attach =3D bdrv_child_cb_attach_backing, - .detach =3D bdrv_child_cb_detach_backing, - .inherit_options =3D bdrv_backing_options, - .drained_begin =3D bdrv_child_cb_drained_begin, - .drained_poll =3D bdrv_child_cb_drained_poll, - .drained_end =3D bdrv_child_cb_drained_end, - .inactivate =3D bdrv_child_cb_inactivate, - .update_filename =3D bdrv_backing_update_filename, - .can_set_aio_ctx =3D bdrv_child_cb_can_set_aio_ctx, - .set_aio_ctx =3D bdrv_child_cb_set_aio_ctx, -}; - /* * Returns the options and flags that a generic child of a BDS should * get, based on the given options and flags for the parent BDS. @@ -2446,8 +2400,7 @@ static void bdrv_default_perms_for_cow(BlockDriverSta= te *bs, BdrvChild *c, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nshared) { - assert(child_class =3D=3D &child_backing || - (child_class =3D=3D &child_of_bds && (role & BDRV_CHILD_COW))); + assert(child_class =3D=3D &child_of_bds && (role & BDRV_CHILD_COW)); =20 /* * We want consistent read from backing files if the parent needs it. @@ -2566,23 +2519,16 @@ void bdrv_format_default_perms(BlockDriverState *bs= , BdrvChild *c, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nshared) { - bool backing =3D (child_class =3D=3D &child_backing); - if (child_class =3D=3D &child_of_bds) { bdrv_default_perms(bs, c, child_class, role, reopen_queue, perm, shared, nperm, nshared); return; } =20 - assert(child_class =3D=3D &child_backing || child_class =3D=3D &child_= file); + assert(child_class =3D=3D &child_file); =20 - if (!backing) { - bdrv_default_perms_for_storage(bs, c, child_class, role, reopen_qu= eue, - perm, shared, nperm, nshared); - } else { - bdrv_default_perms_for_cow(bs, c, child_class, role, reopen_queue, + bdrv_default_perms_for_storage(bs, c, child_class, role, reopen_queue, perm, shared, nperm, nshared); - } } =20 void bdrv_default_perms(BlockDriverState *bs, BdrvChild *c, --=20 2.26.2