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Tue, 4 Feb 2020 17:09:58 +0000 (UTC) From: Max Reitz To: qemu-block@nongnu.org Subject: [PATCH v2 23/33] block: Drop child_backing Date: Tue, 4 Feb 2020 18:08:38 +0100 Message-Id: <20200204170848.614480-24-mreitz@redhat.com> In-Reply-To: <20200204170848.614480-1-mreitz@redhat.com> References: <20200204170848.614480-1-mreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-MC-Unique: v6rTzTTRMGyfjoxOOFQ6Vw-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.61 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 , Vladimir Sementsov-Ogievskiy , qemu-devel@nongnu.org, Max Reitz Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Max Reitz --- block.c | 62 +++------------------------------------ include/block/block_int.h | 1 - 2 files changed, 4 insertions(+), 59 deletions(-) diff --git a/block.c b/block.c index 6b705ee23a..e245b5d8d9 100644 --- a/block.c +++ b/block.c @@ -1169,15 +1169,6 @@ 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; @@ -1188,28 +1179,6 @@ 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= ) { @@ -1237,21 +1206,6 @@ 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, -}; - static int bdrv_open_flags(BlockDriverState *bs, int flags) { int open_flags =3D flags; @@ -2258,8 +2212,7 @@ static void bdrv_default_perms_for_backing(BlockDrive= rState *bs, BdrvChild *c, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nsha= red) { - 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. @@ -2371,23 +2324,16 @@ 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_metadata(bs, c, child_class, role, reopen_q= ueue, - perm, shared, nperm, nshared); - } else { - bdrv_default_perms_for_backing(bs, c, child_class, role, reopen_qu= eue, - perm, shared, nperm, nshared); - } + bdrv_default_perms_for_metadata(bs, c, child_class, role, reopen_queue= , + perm, shared, nperm, nshared); } =20 void bdrv_default_perms(BlockDriverState *bs, BdrvChild *c, diff --git a/include/block/block_int.h b/include/block/block_int.h index 21ece88d41..7b51866678 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; --=20 2.24.1