From patchwork Wed Nov 16 14:07:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Emanuele Giuseppe Esposito X-Patchwork-Id: 13045297 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C698DC4332F for ; Wed, 16 Nov 2022 14:13:55 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ovJ54-0001CK-Bz; Wed, 16 Nov 2022 09:07:58 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ovJ4z-0000uC-BE for qemu-devel@nongnu.org; Wed, 16 Nov 2022 09:07:53 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ovJ4s-0006AC-FU for qemu-devel@nongnu.org; Wed, 16 Nov 2022 09:07:53 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1668607664; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=lm915XGX6fwpz7RDWuUK1Yqycg+7SVAnupnJpMzlUx8=; b=cWm1hVToNC06CnGnJc9iTWwPJYJl+vrBM/MuOxdFOxXKkp8bxEYkTbGT6vm9uW/qsSN2Ga zdCGWUzbt9qOk8UH/UukaWLRs0cR+KrR+SxSlZkQSXaSVKzRwiTL2jyGglHuk2+nGUqNFC FllM165GPWogRmOy6+zYx6F+5UgqIHM= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-160-q5oWUr1GMGeIYJb2Oziz6w-1; Wed, 16 Nov 2022 09:07:42 -0500 X-MC-Unique: q5oWUr1GMGeIYJb2Oziz6w-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 6853D3C10148; Wed, 16 Nov 2022 14:07:41 +0000 (UTC) Received: from virtlab701.virt.lab.eng.bos.redhat.com (virtlab701.virt.lab.eng.bos.redhat.com [10.19.152.228]) by smtp.corp.redhat.com (Postfix) with ESMTP id CAA24C2C8D2; Wed, 16 Nov 2022 14:07:40 +0000 (UTC) From: Emanuele Giuseppe Esposito To: qemu-block@nongnu.org Cc: Kevin Wolf , Hanna Reitz , Stefan Hajnoczi , Ari Sundholm , Pavel Dovgalyuk , Paolo Bonzini , John Snow , Vladimir Sementsov-Ogievskiy , Stefan Weil , Fam Zheng , Ronnie Sahlberg , Peter Lieven , Eric Blake , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Alberto Garcia , Ilya Dryomov , Wen Congyang , Xie Changlong , "Richard W.M. Jones" , Jeff Cody , Cleber Rosa , qemu-devel@nongnu.org, integration@gluster.org, Emanuele Giuseppe Esposito Subject: [PATCH 11/15] block: convert bdrv_lock_medium in generated_co_wrapper_simple Date: Wed, 16 Nov 2022 09:07:26 -0500 Message-Id: <20221116140730.3056048-12-eesposit@redhat.com> In-Reply-To: <20221116140730.3056048-1-eesposit@redhat.com> References: <20221116140730.3056048-1-eesposit@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.8 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: -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_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org BlockDriver->bdrv_lock_medium is categorized as IO callback, and it currently doesn't run in a coroutine. This makes very difficult to add the graph rdlock, since the callback traverses the block nodes graph. The only caller of this function is blk_lock_medium, therefore make blk_lock_medium a generated_co_wrapper_simple, so that it always creates a new coroutine, and then make bdrv_lock_medium coroutine_fn. Signed-off-by: Emanuele Giuseppe Esposito --- block.c | 3 ++- block/block-backend.c | 5 +++-- block/copy-on-read.c | 2 +- block/filter-compress.c | 2 +- block/raw-format.c | 2 +- include/block/block-io.h | 2 +- include/block/block_int-common.h | 2 +- include/sysemu/block-backend-io.h | 5 ++++- 8 files changed, 14 insertions(+), 9 deletions(-) diff --git a/block.c b/block.c index ffbb8c602f..afc5735b82 100644 --- a/block.c +++ b/block.c @@ -6817,10 +6817,11 @@ void coroutine_fn bdrv_co_eject(BlockDriverState *bs, bool eject_flag) * Lock or unlock the media (if it is locked, the user won't be able * to eject it manually). */ -void bdrv_lock_medium(BlockDriverState *bs, bool locked) +void coroutine_fn bdrv_co_lock_medium(BlockDriverState *bs, bool locked) { BlockDriver *drv = bs->drv; IO_CODE(); + assert_bdrv_graph_readable(); trace_bdrv_lock_medium(bs, locked); if (drv && drv->bdrv_lock_medium) { diff --git a/block/block-backend.c b/block/block-backend.c index 308dd2070a..75e2f2124f 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -2009,13 +2009,14 @@ bool blk_is_available(BlockBackend *blk) return blk_is_inserted(blk) && !blk_dev_is_tray_open(blk); } -void blk_lock_medium(BlockBackend *blk, bool locked) +void coroutine_fn blk_co_lock_medium(BlockBackend *blk, bool locked) { BlockDriverState *bs = blk_bs(blk); IO_CODE(); + assert_bdrv_graph_readable(); if (bs) { - bdrv_lock_medium(bs, locked); + bdrv_co_lock_medium(bs, locked); } } diff --git a/block/copy-on-read.c b/block/copy-on-read.c index 76f884a6ae..ccc767f37b 100644 --- a/block/copy-on-read.c +++ b/block/copy-on-read.c @@ -224,7 +224,7 @@ static void cor_eject(BlockDriverState *bs, bool eject_flag) static void cor_lock_medium(BlockDriverState *bs, bool locked) { - bdrv_lock_medium(bs->file->bs, locked); + bdrv_co_lock_medium(bs->file->bs, locked); } diff --git a/block/filter-compress.c b/block/filter-compress.c index 571e4684dd..e10312c225 100644 --- a/block/filter-compress.c +++ b/block/filter-compress.c @@ -124,7 +124,7 @@ static void compress_eject(BlockDriverState *bs, bool eject_flag) static void compress_lock_medium(BlockDriverState *bs, bool locked) { - bdrv_lock_medium(bs->file->bs, locked); + bdrv_co_lock_medium(bs->file->bs, locked); } diff --git a/block/raw-format.c b/block/raw-format.c index 9b23cf17bb..96a9b33384 100644 --- a/block/raw-format.c +++ b/block/raw-format.c @@ -410,7 +410,7 @@ static void raw_eject(BlockDriverState *bs, bool eject_flag) static void raw_lock_medium(BlockDriverState *bs, bool locked) { - bdrv_lock_medium(bs->file->bs, locked); + bdrv_co_lock_medium(bs->file->bs, locked); } static int coroutine_fn raw_co_ioctl(BlockDriverState *bs, diff --git a/include/block/block-io.h b/include/block/block-io.h index 204adeb701..497580fc28 100644 --- a/include/block/block-io.h +++ b/include/block/block-io.h @@ -124,7 +124,7 @@ int bdrv_get_flags(BlockDriverState *bs); bool coroutine_fn bdrv_co_is_inserted(BlockDriverState *bs); bool generated_co_wrapper_simple bdrv_is_inserted(BlockDriverState *bs); -void bdrv_lock_medium(BlockDriverState *bs, bool locked); +void coroutine_fn bdrv_co_lock_medium(BlockDriverState *bs, bool locked); void coroutine_fn bdrv_co_eject(BlockDriverState *bs, bool eject_flag); const char *bdrv_get_format_name(BlockDriverState *bs); diff --git a/include/block/block_int-common.h b/include/block/block_int-common.h index d01b3d44f5..3e1eba518c 100644 --- a/include/block/block_int-common.h +++ b/include/block/block_int-common.h @@ -762,7 +762,7 @@ struct BlockDriver { /* removable device specific. Called with graph rdlock held. */ bool coroutine_fn (*bdrv_is_inserted)(BlockDriverState *bs); void coroutine_fn (*bdrv_eject)(BlockDriverState *bs, bool eject_flag); - void (*bdrv_lock_medium)(BlockDriverState *bs, bool locked); + void coroutine_fn (*bdrv_lock_medium)(BlockDriverState *bs, bool locked); /* to control generic scsi devices. Called with graph rdlock taken. */ BlockAIOCB *coroutine_fn (*bdrv_aio_ioctl)(BlockDriverState *bs, diff --git a/include/sysemu/block-backend-io.h b/include/sysemu/block-backend-io.h index cc706c03d8..dd8566ee69 100644 --- a/include/sysemu/block-backend-io.h +++ b/include/sysemu/block-backend-io.h @@ -58,7 +58,10 @@ bool coroutine_fn blk_co_is_inserted(BlockBackend *blk); bool generated_co_wrapper blk_is_inserted(BlockBackend *blk); bool blk_is_available(BlockBackend *blk); -void blk_lock_medium(BlockBackend *blk, bool locked); + +void coroutine_fn blk_co_lock_medium(BlockBackend *blk, bool locked); +void generated_co_wrapper_simple blk_lock_medium(BlockBackend *blk, + bool locked); void coroutine_fn blk_co_eject(BlockBackend *blk, bool eject_flag); void generated_co_wrapper_simple blk_eject(BlockBackend *blk, bool eject_flag);