From mboxrd@z Thu Jan 1 00:00:00 1970 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 A3F01C433FE for ; Fri, 18 Nov 2022 17:43:38 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ow5NA-0006dZ-M4; Fri, 18 Nov 2022 12:41:52 -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 1ow5N8-0006Ss-It for qemu-devel@nongnu.org; Fri, 18 Nov 2022 12:41:50 -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 1ow5N3-0002Xf-Qc for qemu-devel@nongnu.org; Fri, 18 Nov 2022 12:41:49 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1668793304; 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=oiJtEipaGAiExJgXcUKbqdro5IodTmWyH1ScIDAjGHs=; b=NrcyH+gg7uL8BHqGR/6/t0ddYijov8FGqIgWuY05UxEyrwuYXcymXbgE3G/WosYQTq78fV mHgFX5pe69YYa4DBjrcCvvRCtN15InsQia2wHFDRS9WHWmItEyCmk7lQddX//9BSzQPE/q MkfFS0axwRHXDIsKJu1qFgWwXd7CCCc= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-30-ggROuLtbPvCYBtiMy7R9fg-1; Fri, 18 Nov 2022 12:41:40 -0500 X-MC-Unique: ggROuLtbPvCYBtiMy7R9fg-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 46BB2884341; Fri, 18 Nov 2022 17:41:40 +0000 (UTC) Received: from merkur.fritz.box (unknown [10.39.194.142]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1205C492B04; Fri, 18 Nov 2022 17:41:38 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Cc: kwolf@redhat.com, eesposit@redhat.com, stefanha@redhat.com, hreitz@redhat.com, pbonzini@redhat.com, vsementsov@yandex-team.ru, qemu-devel@nongnu.org Subject: [PATCH v2 12/15] block: Remove ignore_bds_parents parameter from drain_begin/end. Date: Fri, 18 Nov 2022 18:41:07 +0100 Message-Id: <20221118174110.55183-13-kwolf@redhat.com> In-Reply-To: <20221118174110.55183-1-kwolf@redhat.com> References: <20221118174110.55183-1-kwolf@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 Received-SPF: pass client-ip=170.10.133.124; envelope-from=kwolf@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 ignore_bds_parents is now ignored during drain_begin and drain_end, so we can just remove it there. It is still a valid optimisation for drain_all in bdrv_drained_poll(), so leave it around there. Signed-off-by: Kevin Wolf --- include/block/block-io.h | 3 +-- block.c | 2 +- block/io.c | 58 +++++++++++++++------------------------- 3 files changed, 24 insertions(+), 39 deletions(-) diff --git a/include/block/block-io.h b/include/block/block-io.h index 9c36a16a1f..8f5e75756a 100644 --- a/include/block/block-io.h +++ b/include/block/block-io.h @@ -329,8 +329,7 @@ void bdrv_drained_begin(BlockDriverState *bs); * Quiesces a BDS like bdrv_drained_begin(), but does not wait for already * running requests to complete. */ -void bdrv_do_drained_begin_quiesce(BlockDriverState *bs, - BdrvChild *parent, bool ignore_bds_parents); +void bdrv_do_drained_begin_quiesce(BlockDriverState *bs, BdrvChild *parent); /** * bdrv_drained_end: diff --git a/block.c b/block.c index 6b41a252e4..d18512944d 100644 --- a/block.c +++ b/block.c @@ -1228,7 +1228,7 @@ static char *bdrv_child_get_parent_desc(BdrvChild *c) static void bdrv_child_cb_drained_begin(BdrvChild *child) { BlockDriverState *bs = child->opaque; - bdrv_do_drained_begin_quiesce(bs, NULL, false); + bdrv_do_drained_begin_quiesce(bs, NULL); } static bool bdrv_child_cb_drained_poll(BdrvChild *child) diff --git a/block/io.c b/block/io.c index 87d6f22ec4..2e9503df6a 100644 --- a/block/io.c +++ b/block/io.c @@ -45,13 +45,12 @@ static void bdrv_parent_cb_resize(BlockDriverState *bs); static int coroutine_fn bdrv_co_do_pwrite_zeroes(BlockDriverState *bs, int64_t offset, int64_t bytes, BdrvRequestFlags flags); -static void bdrv_parent_drained_begin(BlockDriverState *bs, BdrvChild *ignore, - bool ignore_bds_parents) +static void bdrv_parent_drained_begin(BlockDriverState *bs, BdrvChild *ignore) { BdrvChild *c, *next; QLIST_FOREACH_SAFE(c, &bs->parents, next_parent, next) { - if (c == ignore || (ignore_bds_parents && c->klass->parent_is_bds)) { + if (c == ignore) { continue; } bdrv_parent_drained_begin_single(c, false); @@ -70,13 +69,12 @@ void bdrv_parent_drained_end_single(BdrvChild *c) } } -static void bdrv_parent_drained_end(BlockDriverState *bs, BdrvChild *ignore, - bool ignore_bds_parents) +static void bdrv_parent_drained_end(BlockDriverState *bs, BdrvChild *ignore) { BdrvChild *c; QLIST_FOREACH(c, &bs->parents, next_parent) { - if (c == ignore || (ignore_bds_parents && c->klass->parent_is_bds)) { + if (c == ignore) { continue; } bdrv_parent_drained_end_single(c); @@ -242,7 +240,6 @@ typedef struct { bool begin; bool poll; BdrvChild *parent; - bool ignore_bds_parents; } BdrvCoDrainData; /* Returns true if BDRV_POLL_WHILE() should go into a blocking aio_poll() */ @@ -269,9 +266,8 @@ static bool bdrv_drain_poll_top_level(BlockDriverState *bs, } static void bdrv_do_drained_begin(BlockDriverState *bs, BdrvChild *parent, - bool ignore_bds_parents, bool poll); -static void bdrv_do_drained_end(BlockDriverState *bs, BdrvChild *parent, - bool ignore_bds_parents); + bool poll); +static void bdrv_do_drained_end(BlockDriverState *bs, BdrvChild *parent); static void bdrv_co_drain_bh_cb(void *opaque) { @@ -284,11 +280,10 @@ static void bdrv_co_drain_bh_cb(void *opaque) aio_context_acquire(ctx); bdrv_dec_in_flight(bs); if (data->begin) { - bdrv_do_drained_begin(bs, data->parent, data->ignore_bds_parents, - data->poll); + bdrv_do_drained_begin(bs, data->parent, data->poll); } else { assert(!data->poll); - bdrv_do_drained_end(bs, data->parent, data->ignore_bds_parents); + bdrv_do_drained_end(bs, data->parent); } aio_context_release(ctx); } else { @@ -303,7 +298,6 @@ static void bdrv_co_drain_bh_cb(void *opaque) static void coroutine_fn bdrv_co_yield_to_drain(BlockDriverState *bs, bool begin, BdrvChild *parent, - bool ignore_bds_parents, bool poll) { BdrvCoDrainData data; @@ -321,7 +315,6 @@ static void coroutine_fn bdrv_co_yield_to_drain(BlockDriverState *bs, .done = false, .begin = begin, .parent = parent, - .ignore_bds_parents = ignore_bds_parents, .poll = poll, }; @@ -353,8 +346,7 @@ static void coroutine_fn bdrv_co_yield_to_drain(BlockDriverState *bs, } } -void bdrv_do_drained_begin_quiesce(BlockDriverState *bs, - BdrvChild *parent, bool ignore_bds_parents) +void bdrv_do_drained_begin_quiesce(BlockDriverState *bs, BdrvChild *parent) { IO_OR_GS_CODE(); assert(!qemu_in_coroutine()); @@ -362,9 +354,7 @@ void bdrv_do_drained_begin_quiesce(BlockDriverState *bs, /* Stop things in parent-to-child order */ if (qatomic_fetch_inc(&bs->quiesce_counter) == 0) { aio_disable_external(bdrv_get_aio_context(bs)); - - /* TODO Remove ignore_bds_parents, we don't consider it any more */ - bdrv_parent_drained_begin(bs, parent, false); + bdrv_parent_drained_begin(bs, parent); if (bs->drv && bs->drv->bdrv_drain_begin) { bs->drv->bdrv_drain_begin(bs); } @@ -372,14 +362,14 @@ void bdrv_do_drained_begin_quiesce(BlockDriverState *bs, } static void bdrv_do_drained_begin(BlockDriverState *bs, BdrvChild *parent, - bool ignore_bds_parents, bool poll) + bool poll) { if (qemu_in_coroutine()) { - bdrv_co_yield_to_drain(bs, true, parent, ignore_bds_parents, poll); + bdrv_co_yield_to_drain(bs, true, parent, poll); return; } - bdrv_do_drained_begin_quiesce(bs, parent, ignore_bds_parents); + bdrv_do_drained_begin_quiesce(bs, parent); /* * Wait for drained requests to finish. @@ -391,7 +381,6 @@ static void bdrv_do_drained_begin(BlockDriverState *bs, BdrvChild *parent, * nodes. */ if (poll) { - assert(!ignore_bds_parents); BDRV_POLL_WHILE(bs, bdrv_drain_poll_top_level(bs, parent)); } } @@ -399,20 +388,19 @@ static void bdrv_do_drained_begin(BlockDriverState *bs, BdrvChild *parent, void bdrv_drained_begin(BlockDriverState *bs) { IO_OR_GS_CODE(); - bdrv_do_drained_begin(bs, NULL, false, true); + bdrv_do_drained_begin(bs, NULL, true); } /** * This function does not poll, nor must any of its recursively called * functions. */ -static void bdrv_do_drained_end(BlockDriverState *bs, BdrvChild *parent, - bool ignore_bds_parents) +static void bdrv_do_drained_end(BlockDriverState *bs, BdrvChild *parent) { int old_quiesce_counter; if (qemu_in_coroutine()) { - bdrv_co_yield_to_drain(bs, false, parent, ignore_bds_parents, false); + bdrv_co_yield_to_drain(bs, false, parent, false); return; } assert(bs->quiesce_counter > 0); @@ -423,9 +411,7 @@ static void bdrv_do_drained_end(BlockDriverState *bs, BdrvChild *parent, if (bs->drv && bs->drv->bdrv_drain_end) { bs->drv->bdrv_drain_end(bs); } - /* TODO Remove ignore_bds_parents, we don't consider it any more */ - bdrv_parent_drained_end(bs, parent, false); - + bdrv_parent_drained_end(bs, parent); aio_enable_external(bdrv_get_aio_context(bs)); } } @@ -433,7 +419,7 @@ static void bdrv_do_drained_end(BlockDriverState *bs, BdrvChild *parent, void bdrv_drained_end(BlockDriverState *bs) { IO_OR_GS_CODE(); - bdrv_do_drained_end(bs, NULL, false); + bdrv_do_drained_end(bs, NULL); } void bdrv_drain(BlockDriverState *bs) @@ -491,7 +477,7 @@ void bdrv_drain_all_begin(void) GLOBAL_STATE_CODE(); if (qemu_in_coroutine()) { - bdrv_co_yield_to_drain(NULL, true, NULL, true, true); + bdrv_co_yield_to_drain(NULL, true, NULL, true); return; } @@ -516,7 +502,7 @@ void bdrv_drain_all_begin(void) AioContext *aio_context = bdrv_get_aio_context(bs); aio_context_acquire(aio_context); - bdrv_do_drained_begin(bs, NULL, true, false); + bdrv_do_drained_begin(bs, NULL, false); aio_context_release(aio_context); } @@ -536,7 +522,7 @@ void bdrv_drain_all_end_quiesce(BlockDriverState *bs) g_assert(!bs->refcnt); while (bs->quiesce_counter) { - bdrv_do_drained_end(bs, NULL, true); + bdrv_do_drained_end(bs, NULL); } } @@ -558,7 +544,7 @@ void bdrv_drain_all_end(void) AioContext *aio_context = bdrv_get_aio_context(bs); aio_context_acquire(aio_context); - bdrv_do_drained_end(bs, NULL, true); + bdrv_do_drained_end(bs, NULL); aio_context_release(aio_context); } -- 2.38.1