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dkim=none (message not signed) header.d=none;nongnu.org; dmarc=none action=none header.from=virtuozzo.com; From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, crosa@redhat.com, ehabkost@redhat.com, fam@euphon.net, stefanha@redhat.com, mreitz@redhat.com, kwolf@redhat.com, den@openvz.org, vsementsov@virtuozzo.com, eblake@redhat.com, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH v9 1/7] block: return error-code from bdrv_invalidate_cache Date: Thu, 24 Sep 2020 21:54:08 +0300 Message-Id: <20200924185414.28642-2-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20200924185414.28642-1-vsementsov@virtuozzo.com> References: <20200924185414.28642-1-vsementsov@virtuozzo.com> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: AM0PR05CA0082.eurprd05.prod.outlook.com (2603:10a6:208:136::22) To AM7PR08MB5494.eurprd08.prod.outlook.com (2603:10a6:20b:dc::15) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-Mailer: git-send-email 2.21.3 X-Originating-IP: [185.215.60.94] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 1a7fbbba-9538-4016-f3bf-08d860bb4715 X-MS-TrafficTypeDiagnostic: AM6PR08MB4341: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:489; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=40.107.13.114; envelope-from=vsementsov@virtuozzo.com; helo=EUR01-HE1-obe.outbound.protection.outlook.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/24 14:54:34 X-ACL-Warn: Detected OS = Windows NT kernel [generic] [fuzzy] X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @virtuozzo.com) This is the only coroutine wrapper from block.c and block/io.c which doesn't return a value, so let's convert it to the common behavior, to simplify moving to generated coroutine wrappers in a further commit. Also, bdrv_invalidate_cache is a void function, returning error only through **errp parameter, which is considered to be bad practice, as it forces callers to define and propagate local_err variable, so conversion is good anyway. This patch leaves the conversion of .bdrv_co_invalidate_cache() driver callbacks and bdrv_invalidate_cache_all() for another day. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Eric Blake Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Stefan Hajnoczi --- include/block/block.h | 2 +- block.c | 32 ++++++++++++++++++-------------- 2 files changed, 19 insertions(+), 15 deletions(-) diff --git a/include/block/block.h b/include/block/block.h index 981ab5b314..81d591dd4c 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -460,7 +460,7 @@ void bdrv_aio_cancel_async(BlockAIOCB *acb); int bdrv_co_ioctl(BlockDriverState *bs, int req, void *buf); =20 /* Invalidate any cached metadata used by image formats */ -void bdrv_invalidate_cache(BlockDriverState *bs, Error **errp); +int bdrv_invalidate_cache(BlockDriverState *bs, Error **errp); void bdrv_invalidate_cache_all(Error **errp); int bdrv_inactivate_all(void); =20 diff --git a/block.c b/block.c index 11ab55f80b..47b3845e14 100644 --- a/block.c +++ b/block.c @@ -5781,8 +5781,8 @@ void bdrv_init_with_whitelist(void) bdrv_init(); } =20 -static void coroutine_fn bdrv_co_invalidate_cache(BlockDriverState *bs, - Error **errp) +static int coroutine_fn bdrv_co_invalidate_cache(BlockDriverState *bs, + Error **errp) { BdrvChild *child, *parent; uint64_t perm, shared_perm; @@ -5791,14 +5791,14 @@ static void coroutine_fn bdrv_co_invalidate_cache(B= lockDriverState *bs, BdrvDirtyBitmap *bm; =20 if (!bs->drv) { - return; + return -ENOMEDIUM; } =20 QLIST_FOREACH(child, &bs->children, next) { bdrv_co_invalidate_cache(child->bs, &local_err); if (local_err) { error_propagate(errp, local_err); - return; + return -EINVAL; } } =20 @@ -5821,7 +5821,7 @@ static void coroutine_fn bdrv_co_invalidate_cache(Blo= ckDriverState *bs, ret =3D bdrv_check_perm(bs, NULL, perm, shared_perm, NULL, NULL, e= rrp); if (ret < 0) { bs->open_flags |=3D BDRV_O_INACTIVE; - return; + return ret; } bdrv_set_perm(bs, perm, shared_perm); =20 @@ -5830,7 +5830,7 @@ static void coroutine_fn bdrv_co_invalidate_cache(Blo= ckDriverState *bs, if (local_err) { bs->open_flags |=3D BDRV_O_INACTIVE; error_propagate(errp, local_err); - return; + return -EINVAL; } } =20 @@ -5842,7 +5842,7 @@ static void coroutine_fn bdrv_co_invalidate_cache(Blo= ckDriverState *bs, if (ret < 0) { bs->open_flags |=3D BDRV_O_INACTIVE; error_setg_errno(errp, -ret, "Could not refresh total sector c= ount"); - return; + return ret; } } =20 @@ -5852,27 +5852,30 @@ static void coroutine_fn bdrv_co_invalidate_cache(B= lockDriverState *bs, if (local_err) { bs->open_flags |=3D BDRV_O_INACTIVE; error_propagate(errp, local_err); - return; + return -EINVAL; } } } + + return 0; } =20 typedef struct InvalidateCacheCo { BlockDriverState *bs; Error **errp; bool done; + int ret; } InvalidateCacheCo; =20 static void coroutine_fn bdrv_invalidate_cache_co_entry(void *opaque) { InvalidateCacheCo *ico =3D opaque; - bdrv_co_invalidate_cache(ico->bs, ico->errp); + ico->ret =3D bdrv_co_invalidate_cache(ico->bs, ico->errp); ico->done =3D true; aio_wait_kick(); } =20 -void bdrv_invalidate_cache(BlockDriverState *bs, Error **errp) +int bdrv_invalidate_cache(BlockDriverState *bs, Error **errp) { Coroutine *co; InvalidateCacheCo ico =3D { @@ -5889,22 +5892,23 @@ void bdrv_invalidate_cache(BlockDriverState *bs, Er= ror **errp) bdrv_coroutine_enter(bs, co); BDRV_POLL_WHILE(bs, !ico.done); } + + return ico.ret; } =20 void bdrv_invalidate_cache_all(Error **errp) { BlockDriverState *bs; - Error *local_err =3D NULL; BdrvNextIterator it; =20 for (bs =3D bdrv_first(&it); bs; bs =3D bdrv_next(&it)) { AioContext *aio_context =3D bdrv_get_aio_context(bs); + int ret; =20 aio_context_acquire(aio_context); - bdrv_invalidate_cache(bs, &local_err); + ret =3D bdrv_invalidate_cache(bs, errp); aio_context_release(aio_context); - if (local_err) { - error_propagate(errp, local_err); + if (ret < 0) { bdrv_next_cleanup(&it); return; } --=20 2.21.3