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([185.215.60.153]) by smtp.gmail.com with ESMTPSA id y3-20020a056512044300b0044a9bda3242sm1057573lfk.90.2022.03.30.14.29.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Mar 2022 14:29:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=openvz-org.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=3XIynKxv/8mf0mXqZqalwzWUhAmUjNLdugZbjT63J/0=; b=ZAYs33CEL/VzW4iNyekiSF6oISFYdvEwKiZI1YCFifAIsO7xTv6+0qhxJY/TZqti3n S4z+CMzM/E9Y1BVzebwa2WuxHqkydoGHWWwzMl7qp/CavM3U5Yv7Eka+fWVWjxIANP+C +oW1stRazK+6KDQsN64gczjJWcguP1lEf30HeV0fVm9xa3qvw68RTgYLnLY8B8vOSH1u 0fJWAE8rvQvccvbbBi4P6EcPDXo3Y83mRjAIY9UpuQ4gOUngHxbDcvi64A8HYFTtKX+p k+dfv6Jhs3yxZrJAQshRn7fbVUDgbMh8ZPmRu244u/rQQ/e6zozzW8Et0fwziTXtS7XF XH0w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=3XIynKxv/8mf0mXqZqalwzWUhAmUjNLdugZbjT63J/0=; b=VFbth0c3YJdAlXNduCYKHyhemc+Lc7VC93+mFEXMjj43UjZercmF3svTGWLsOmLNvQ 7fGdxAm0+N4BAEUpb4NXYd2I5ud4acifHQR/ryRwFLL7r0yEAQdfqGCsRJYU5c5SpEkN 8Kp0v3k2h4/iqbT1gqODqh6vP+FynVHgaCGqDOffT5dwW8tlAJke7/+5Gjk2oXLy8Ppx rkF6aJiCQ6yF4XhG8A/aRG4GlzfvBUNjLSlYv9QBmBXQuyGu7tHgE+xMibUjQqiEh71b /oWQEobZz4+pBIzae/NaLAvlY2lodHy8AiCfy0d4P+8idOW6M95b6URDXgOvdubUUzA2 gPSw== X-Gm-Message-State: AOAM532lmpH6Ub10h7DKUurA+JtoAUQhUeaAQkE/C909+41AuQpG78Ot b9MboR8xE872Uyw3icxsTl4X3w== X-Google-Smtp-Source: ABdhPJyO8r5HGBB2LFr7Zu19Qa+Yl5xvWY5NNTxasx6M5Nia7QV7ms1U8nIeqzXunnlTR1ME/YoqUw== X-Received: by 2002:a2e:7f13:0:b0:247:ef72:9e8b with SMTP id a19-20020a2e7f13000000b00247ef729e8bmr8375799ljd.205.1648675784369; Wed, 30 Mar 2022 14:29:44 -0700 (PDT) From: Vladimir Sementsov-Ogievskiy X-Google-Original-From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org Subject: [PATCH v5 21/45] block: add bdrv_try_set_aio_context_tran transaction action Date: Thu, 31 Mar 2022 00:28:38 +0300 Message-Id: <20220330212902.590099-22-vsementsov@openvz.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220330212902.590099-1-vsementsov@openvz.org> References: <20220330212902.590099-1-vsementsov@openvz.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a00:1450:4864:20::234 (failed) 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=2a00:1450:4864:20::234; envelope-from=vladimir.sementsov-ogievskiy@openvz.org; helo=mail-lj1-x234.google.com X-Spam_score_int: -4 X-Spam_score: -0.5 X-Spam_bar: / X-Spam_report: (-0.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, PDS_HP_HELO_NORDNS=0.659, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Wed, 30 Mar 2022 19:17:25 -0400 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, hreitz@redhat.com, vsementsov@openvz.org, v.sementsov-og@mail.ru, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1648683170870100001 Content-Type: text/plain; charset="utf-8" To be used in further commit. Signed-off-by: Vladimir Sementsov-Ogievskiy --- block.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/block.c b/block.c index be19964f89..1900cdf277 100644 --- a/block.c +++ b/block.c @@ -2907,6 +2907,54 @@ static void bdrv_child_free(BdrvChild *child) g_free(child); } =20 +typedef struct BdrvTrySetAioContextState { + BlockDriverState *bs; + AioContext *old_ctx; +} BdrvTrySetAioContextState; + +static void bdrv_try_set_aio_context_abort(void *opaque) +{ + BdrvTrySetAioContextState *s =3D opaque; + + if (bdrv_get_aio_context(s->bs) !=3D s->old_ctx) { + bdrv_try_set_aio_context(s->bs, s->old_ctx, &error_abort); + } +} + +static TransactionActionDrv bdrv_try_set_aio_context_drv =3D { + .abort =3D bdrv_try_set_aio_context_abort, + .clean =3D g_free, +}; + +__attribute__((unused)) +static int bdrv_try_set_aio_context_tran(BlockDriverState *bs, + AioContext *new_ctx, + Transaction *tran, + Error **errp) +{ + AioContext *old_ctx =3D bdrv_get_aio_context(bs); + BdrvTrySetAioContextState *s; + int ret; + + if (old_ctx =3D=3D new_ctx) { + return 0; + } + + ret =3D bdrv_try_set_aio_context(bs, new_ctx, errp); + if (ret < 0) { + return ret; + } + + s =3D g_new(BdrvTrySetAioContextState, 1); + *s =3D (BdrvTrySetAioContextState) { + .bs =3D bs, + .old_ctx =3D old_ctx, + }; + tran_add(tran, &bdrv_try_set_aio_context_drv, s); + + return 0; +} + typedef struct BdrvAttachChildCommonState { BdrvChild *child; AioContext *old_parent_ctx; --=20 2.35.1