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bh=VVanQIJXADpynmWb1aVbQiE9efvoCwQArGSOVvfiQXM=; b=iM64Gh/R+eIuw1+BTb5pjfETw1zYshy7WJurny//BHelzgqeXY2x6uugRNoHQGCZGtzsLn eeRRyWElAF1SX7/2yWpROnrejHmzPaDSCvGIax8kTQ30p5DeAiSpXJmU4d7IdDKp0d0f4X s76ksVoe4j5UBt15UiGHDT6xACkEI7g= X-MC-Unique: CuB98wylPziXCHQIUxMjqw-1 From: Emanuele Giuseppe Esposito To: qemu-block@nongnu.org Cc: Kevin Wolf , Hanna Reitz , John Snow , Vladimir Sementsov-Ogievskiy , Eric Blake , Fam Zheng , qemu-devel@nongnu.org, Emanuele Giuseppe Esposito , Paolo Bonzini Subject: [PATCH v2 8/9] block: bdrv_create is never called in non-coroutine context Date: Fri, 4 Nov 2022 05:56:59 -0400 Message-Id: <20221104095700.4117433-9-eesposit@redhat.com> In-Reply-To: <20221104095700.4117433-1-eesposit@redhat.com> References: <20221104095700.4117433-1-eesposit@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.1 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=170.10.133.124; envelope-from=eesposit@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.047, 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_HELO_NONE=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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Qemu-devel" Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1667555885944100001 Content-Type: text/plain; charset="utf-8" Delete the if case and make sure it won't be called again in coroutines. Signed-off-by: Emanuele Giuseppe Esposito Reviewed-by: Paolo Bonzini --- block.c | 37 ++++++++++++++++--------------------- 1 file changed, 16 insertions(+), 21 deletions(-) diff --git a/block.c b/block.c index c6a80d775c..d03a541e4f 100644 --- a/block.c +++ b/block.c @@ -557,30 +557,25 @@ static void coroutine_fn bdrv_create_co_entry(void *o= paque) int bdrv_create(BlockDriver *drv, const char* filename, QemuOpts *opts, Error **errp) { + Coroutine *co; + CreateCo cco =3D { + .drv =3D drv, + .filename =3D g_strdup(filename), + .opts =3D opts, + .ret =3D NOT_DONE, + .err =3D NULL, + }; GLOBAL_STATE_CODE(); + assert(!qemu_in_coroutine()); =20 - if (qemu_in_coroutine()) { - /* Fast-path if already in coroutine context */ - return bdrv_co_create(drv, filename, opts, errp); - } else { - Coroutine *co; - CreateCo cco =3D { - .drv =3D drv, - .filename =3D g_strdup(filename), - .opts =3D opts, - .ret =3D NOT_DONE, - .err =3D NULL, - }; - - co =3D qemu_coroutine_create(bdrv_create_co_entry, &cco); - qemu_coroutine_enter(co); - while (cco.ret =3D=3D NOT_DONE) { - aio_poll(qemu_get_aio_context(), true); - } - error_propagate(errp, cco.err); - g_free(cco.filename); - return cco.ret; + co =3D qemu_coroutine_create(bdrv_create_co_entry, &cco); + qemu_coroutine_enter(co); + while (cco.ret =3D=3D NOT_DONE) { + aio_poll(qemu_get_aio_context(), true); } + error_propagate(errp, cco.err); + g_free(cco.filename); + return cco.ret; } =20 /** --=20 2.31.1