From patchwork Tue Oct 18 19:50:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Begunkov X-Patchwork-Id: 13010982 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 97970C43217 for ; Tue, 18 Oct 2022 19:52:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229872AbiJRTwo (ORCPT ); Tue, 18 Oct 2022 15:52:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51422 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229606AbiJRTwk (ORCPT ); Tue, 18 Oct 2022 15:52:40 -0400 Received: from mail-ed1-x533.google.com (mail-ed1-x533.google.com [IPv6:2a00:1450:4864:20::533]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 565ED876B5; Tue, 18 Oct 2022 12:52:29 -0700 (PDT) Received: by mail-ed1-x533.google.com with SMTP id a67so22060917edf.12; Tue, 18 Oct 2022 12:52:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=lFeaHcw3WNcJNFaRay0No0wm3D4s1Mkz5fJGwkqsY20=; b=IMsZVcTie6W3CPtJzjN94pHSJC7XL+ENcaX4GcL0mtRZO8MtB/L1yhDZPpaVpBmUYK bs8KSCL+9M7/KhxBu9kwXv0EVYqh0iCdwdXLW9Ye0em6U8KaCMyiRmJQwJMlkA6ZLtFO +8sfPDSDC6kLilqDoyEHDQpnSoIZnDUK3Ctb35lhI6NamtWM10UnUukWx8A9zecNKMCu Q/NcC55LR1UvKSpzU+SF0fFZ0cCjPUTXADVinblmu5Ha4okPjQlhic/ZVnHZcc4YjTZO Q1bXlXtNVTWbDg+KVPFNW6ue6x0kajLHT9TDmRmUeQBBCmymCS2UU5Uq4r62CFLGgVT/ Rp9w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=lFeaHcw3WNcJNFaRay0No0wm3D4s1Mkz5fJGwkqsY20=; b=78X7igW5b8BtM7vkgQz5rLuZk8pmnC/THLZ1D0HhhmA7owzceKqBen2JvZ7RZ1Fpwg hMcPOAgEnE90eBnjYjc6FdZUSRgRr9HRZpPLy2T4NCIN0dRNiLJphCV0cS5P7T3yTG8O /qqbKimZzsau9bme0ow4z1Tn4u79bc37+7zpf27mGGqba38+/Ji6et2VPxjbf0shb/9G HADrM5vZxVmgO+aIkVd49yHRw8pflAUJw1obays7UCbHruFDDzqPruWvSN4L7zg9pVCJ WEnyf4x8RM+IDmVdTC/Lb3Jg2a/+VbosTr6sf4FiR07zeHl+LNuPkDmu4aCJ5K430rvR c/8A== X-Gm-Message-State: ACrzQf37n5Lg53+Tyq6I9Gh0rhRKaRRLvlMFxPWYJYQBx/fDU1qUCZme r5LLw9cQjo4Xar7be/z1RYZjU68ApaE= X-Google-Smtp-Source: AMsMyM7Om/5baYXatwtjMC2RIaTufoS8gp9s/C1nCrq9n/XhR7fzEmVLzLiwsm85yNB/ocCqEWQDjg== X-Received: by 2002:a05:6402:1c1c:b0:45c:35b2:2a98 with SMTP id ck28-20020a0564021c1c00b0045c35b22a98mr4220710edb.182.1666122725252; Tue, 18 Oct 2022 12:52:05 -0700 (PDT) Received: from 127.0.0.1localhost (94.197.72.2.threembb.co.uk. [94.197.72.2]) by smtp.gmail.com with ESMTPSA id r1-20020a1709061ba100b0072a881b21d8sm7945858ejg.119.2022.10.18.12.52.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Oct 2022 12:52:04 -0700 (PDT) From: Pavel Begunkov To: Jens Axboe , linux-block@vger.kernel.org Cc: io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Pavel Begunkov Subject: [RFC for-next v2 1/4] bio: safeguard REQ_ALLOC_CACHE bio put Date: Tue, 18 Oct 2022 20:50:55 +0100 Message-Id: <558d78313476c4e9c233902efa0092644c3d420a.1666122465.git.asml.silence@gmail.com> X-Mailer: git-send-email 2.38.0 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org bio_put() with REQ_ALLOC_CACHE assumes that it's executed not from an irq context. Let's add a warning if the invariant is not respected, especially since there is a couple of places removing REQ_POLLED by hand without also clearing REQ_ALLOC_CACHE. Signed-off-by: Pavel Begunkov Reviewed-by: Christoph Hellwig --- block/bio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/bio.c b/block/bio.c index 7cb7d2ff139b..5b4594daa259 100644 --- a/block/bio.c +++ b/block/bio.c @@ -741,7 +741,7 @@ void bio_put(struct bio *bio) return; } - if (bio->bi_opf & REQ_ALLOC_CACHE) { + if ((bio->bi_opf & REQ_ALLOC_CACHE) && !WARN_ON_ONCE(in_interrupt())) { struct bio_alloc_cache *cache; bio_uninit(bio); From patchwork Tue Oct 18 19:50:56 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Begunkov X-Patchwork-Id: 13010981 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E5093C4321E for ; Tue, 18 Oct 2022 19:52:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229898AbiJRTwl (ORCPT ); Tue, 18 Oct 2022 15:52:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51412 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229574AbiJRTwj (ORCPT ); Tue, 18 Oct 2022 15:52:39 -0400 Received: from mail-ej1-x62f.google.com (mail-ej1-x62f.google.com [IPv6:2a00:1450:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B38B18768D; Tue, 18 Oct 2022 12:52:29 -0700 (PDT) Received: by mail-ej1-x62f.google.com with SMTP id a26so34605046ejc.4; Tue, 18 Oct 2022 12:52:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=u5GqQPQo1EN7QTPOq98P7aatI+dm61orL9Tt4wQrx+M=; b=DxrIRWF3IlLy7RscwISMjCOi24P2yJVMt2Xc0TV752F4rLMsC93h2W5TYQdYGCt1MR jyRwSmKys8FRe2BXkY4D59joFsHthbLLe3FDyZQJZVDmwj+4W94mZQK1U5BNwQSTdfD1 T7QvSss0PnHop/E92i5X+3vitwOD+/dhuz3LihI7I7SrO0yU32x5JKCDAqLAOPDpsJxt /DFqOVPve/MX8cq5RftjsGcfxNArnWahhuxRbxc16R4CMgF4jEOBAn81HVQKTW8rveeq x/maZeaY21ZPPxj+fw2xBewgJBEtwCF5TT3xLCSPbu+xL0heQuU40uzlWt2TJUKUHLK6 NrNg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=u5GqQPQo1EN7QTPOq98P7aatI+dm61orL9Tt4wQrx+M=; b=1ez2zHwpPx4yyMSrHFENL7zkBDqYN3NG/TIA9Few8ZyEcprPYdBm1JRGMVkqxr0vyz NXpf/LX4CHJj4BWnC984Tjx9pk8MDuQeKpxQR9Wc86eHOMTv/HPKgJRudW85wBf3NG0s lHGh9gQ6owpBqBPklnuAldh1IKFVhyr8CneVOk15PTGgZ3g508ubaiJPLFF5bsVQDZ9Z N3UHicVAA1WO7URpF0CdmnpGFZgD/tpa3H/Rh7QFaafBJryFrGBnOWRBS2FiEO00kO39 YEFWJ8Lb3V2Cuf6h12Wpy7mAY5BBOfsV5YUX7fabCMke0F2lV9h7Ua7Pu3YSdkbm6zjV 1g7A== X-Gm-Message-State: ACrzQf2gwCilgAEeSWDZim++TCYu2G1HaLWj2cUWbakk4MUc8JCjyknI fP7YZFxX+g+0wigUi2/8LKc+Eoe4Gwk= X-Google-Smtp-Source: AMsMyM4zsLcwKui+DBi3RWrqYY07/MzotigsDhvrl8qX0g3qPewyVvoTQ9L5Cr+i/o0koesR1xQMRw== X-Received: by 2002:a17:907:6e9e:b0:78e:214b:e3c2 with SMTP id sh30-20020a1709076e9e00b0078e214be3c2mr3709856ejc.15.1666122726606; Tue, 18 Oct 2022 12:52:06 -0700 (PDT) Received: from 127.0.0.1localhost (94.197.72.2.threembb.co.uk. [94.197.72.2]) by smtp.gmail.com with ESMTPSA id r1-20020a1709061ba100b0072a881b21d8sm7945858ejg.119.2022.10.18.12.52.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Oct 2022 12:52:05 -0700 (PDT) From: Pavel Begunkov To: Jens Axboe , linux-block@vger.kernel.org Cc: io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Pavel Begunkov Subject: [RFC for-next v2 2/4] bio: split pcpu cache part of bio_put into a helper Date: Tue, 18 Oct 2022 20:50:56 +0100 Message-Id: X-Mailer: git-send-email 2.38.0 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Extract a helper out of bio_put for recycling into percpu caches. It's a preparation patch without functional changes. Signed-off-by: Pavel Begunkov --- block/bio.c | 38 +++++++++++++++++++++++++------------- 1 file changed, 25 insertions(+), 13 deletions(-) diff --git a/block/bio.c b/block/bio.c index 5b4594daa259..ac16cc154476 100644 --- a/block/bio.c +++ b/block/bio.c @@ -725,6 +725,28 @@ static void bio_alloc_cache_destroy(struct bio_set *bs) bs->cache = NULL; } +static inline void bio_put_percpu_cache(struct bio *bio) +{ + struct bio_alloc_cache *cache; + + cache = per_cpu_ptr(bio->bi_pool->cache, get_cpu()); + bio_uninit(bio); + + if ((bio->bi_opf & REQ_POLLED) && !WARN_ON_ONCE(in_interrupt())) { + bio->bi_next = cache->free_list; + cache->free_list = bio; + cache->nr++; + } else { + put_cpu(); + bio_free(bio); + return; + } + + if (cache->nr > ALLOC_CACHE_MAX + ALLOC_CACHE_SLACK) + bio_alloc_cache_prune(cache, ALLOC_CACHE_SLACK); + put_cpu(); +} + /** * bio_put - release a reference to a bio * @bio: bio to release reference to @@ -740,20 +762,10 @@ void bio_put(struct bio *bio) if (!atomic_dec_and_test(&bio->__bi_cnt)) return; } - - if ((bio->bi_opf & REQ_ALLOC_CACHE) && !WARN_ON_ONCE(in_interrupt())) { - struct bio_alloc_cache *cache; - - bio_uninit(bio); - cache = per_cpu_ptr(bio->bi_pool->cache, get_cpu()); - bio->bi_next = cache->free_list; - cache->free_list = bio; - if (++cache->nr > ALLOC_CACHE_MAX + ALLOC_CACHE_SLACK) - bio_alloc_cache_prune(cache, ALLOC_CACHE_SLACK); - put_cpu(); - } else { + if (bio->bi_opf & REQ_ALLOC_CACHE) + bio_put_percpu_cache(bio); + else bio_free(bio); - } } EXPORT_SYMBOL(bio_put); From patchwork Tue Oct 18 19:50:57 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Begunkov X-Patchwork-Id: 13010984 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DCAF4C4332F for ; Tue, 18 Oct 2022 19:52:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229788AbiJRTws (ORCPT ); Tue, 18 Oct 2022 15:52:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51436 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229852AbiJRTwk (ORCPT ); Tue, 18 Oct 2022 15:52:40 -0400 Received: from mail-ej1-x62f.google.com (mail-ej1-x62f.google.com [IPv6:2a00:1450:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3C5E7857F5; Tue, 18 Oct 2022 12:52:30 -0700 (PDT) Received: by mail-ej1-x62f.google.com with SMTP id y14so34869847ejd.9; Tue, 18 Oct 2022 12:52:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=F/aQ8vmh1jZL17zaP9aQue+c8W/pbna/0wkMpy2D0Vo=; b=jvWw9ru2o3Oj8dramvcuYh4qUbMzZVFrRRtnU0R2o9qlGMM30cKLMz+hL0+8Mg7C6B 6gQBjOV42HYC3k7jQ9TbK+Q3s+0rEUCX3mUsyyoZiEHxdLk8I+yv1LFO5p/SlaBP1U5z 5OGe+4LYLTIwynUdRhvA4oXyILoHVRxxWKGbXUAhx0KsXoHw3aOutng6yz3QutlAC0Ac Oq6eO67IRQC4rY0AXprrZ/uSpqCq7OFNfXeh5zZHHKF/YFHRHl06jYZQ4WPh8w9U4j8n 8UVxAOsWxttfx42qdlj0hawDwMu5UfmgmsyqhrpHqjLB+uwM29flR3KsqvSSUXiMaxF9 +G4g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=F/aQ8vmh1jZL17zaP9aQue+c8W/pbna/0wkMpy2D0Vo=; b=WTb8o+CZeg1HWKbNruNERDVwZ/3NjBzJkoOQf3Q5fq0eII9/sZRmolEQDyYxBCfGq2 7Jypz25v3nAbmlsCvOcleAHyDzOtTJY/tCsN6qyEQs88PixwSVg4kpPy1yBba9ZQm+Oy eTlGz/jP896Kta387ZUT02N8wC23BPw3EHajMSvVtroQZ3fKE8uWwE6VjfGDshKOwrqS lotm5rPl3u4Khtt3i+eTLsmdT3D0Okreakl+E7zS3f/MfFrAIwaUgMhYx0gXaW3l8m9p Z/pbugVehyz51LBC59N7rbKJdkfySLzB6HpaXyEXPySBtk5Tfwb4jLBBw+6LqES42aWP bbMA== X-Gm-Message-State: ACrzQf2Ep39kLDLfSfrnA7nkgLVt5F6FqKjy1x104XhnkuV2lmBDUww5 +qEbeSUIYnM5bx9RTxYhAzp/3JdYYmI= X-Google-Smtp-Source: AMsMyM4cZM94eibR4vsky9wpZ0U43PkV1uNynN0mLu9z6GZbqC1oGvFBDbBqWU7Wr3kxBXTm/7NSBg== X-Received: by 2002:a17:907:d04:b0:76e:e208:27ba with SMTP id gn4-20020a1709070d0400b0076ee20827bamr3931422ejc.652.1666122727949; Tue, 18 Oct 2022 12:52:07 -0700 (PDT) Received: from 127.0.0.1localhost (94.197.72.2.threembb.co.uk. [94.197.72.2]) by smtp.gmail.com with ESMTPSA id r1-20020a1709061ba100b0072a881b21d8sm7945858ejg.119.2022.10.18.12.52.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Oct 2022 12:52:07 -0700 (PDT) From: Pavel Begunkov To: Jens Axboe , linux-block@vger.kernel.org Cc: io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Pavel Begunkov Subject: [RFC for-next v2 3/4] block/bio: add pcpu caching for non-polling bio_put Date: Tue, 18 Oct 2022 20:50:57 +0100 Message-Id: <9fd04486d972c1f3ef273fa26b4b6bf51a5e4270.1666122465.git.asml.silence@gmail.com> X-Mailer: git-send-email 2.38.0 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org This patch extends REQ_ALLOC_CACHE to IRQ completions, whenever currently it's only limited to iopoll. Instead of guarding the list with irq toggling on alloc, which is expensive, it keeps an additional irq-safe list from which bios are spliced in batches to ammortise overhead. On the put side it toggles irqs, but in many cases they're already disabled and so cheap. Signed-off-by: Pavel Begunkov --- block/bio.c | 64 ++++++++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 53 insertions(+), 11 deletions(-) diff --git a/block/bio.c b/block/bio.c index ac16cc154476..c2dda2759df5 100644 --- a/block/bio.c +++ b/block/bio.c @@ -25,9 +25,15 @@ #include "blk-rq-qos.h" #include "blk-cgroup.h" +#define ALLOC_CACHE_THRESHOLD 16 +#define ALLOC_CACHE_SLACK 64 +#define ALLOC_CACHE_MAX 512 + struct bio_alloc_cache { struct bio *free_list; + struct bio *free_list_irq; unsigned int nr; + unsigned int nr_irq; }; static struct biovec_slab { @@ -408,6 +414,22 @@ static void punt_bios_to_rescuer(struct bio_set *bs) queue_work(bs->rescue_workqueue, &bs->rescue_work); } +static void bio_alloc_irq_cache_splice(struct bio_alloc_cache *cache) +{ + unsigned long flags; + + /* cache->free_list must be empty */ + if (WARN_ON_ONCE(cache->free_list)) + return; + + local_irq_save(flags); + cache->free_list = cache->free_list_irq; + cache->free_list_irq = NULL; + cache->nr += cache->nr_irq; + cache->nr_irq = 0; + local_irq_restore(flags); +} + static struct bio *bio_alloc_percpu_cache(struct block_device *bdev, unsigned short nr_vecs, blk_opf_t opf, gfp_t gfp, struct bio_set *bs) @@ -417,9 +439,17 @@ static struct bio *bio_alloc_percpu_cache(struct block_device *bdev, cache = per_cpu_ptr(bs->cache, get_cpu()); if (!cache->free_list) { - put_cpu(); - return NULL; + if (READ_ONCE(cache->nr_irq) < ALLOC_CACHE_THRESHOLD) { + put_cpu(); + return NULL; + } + bio_alloc_irq_cache_splice(cache); + if (!cache->free_list) { + put_cpu(); + return NULL; + } } + bio = cache->free_list; cache->free_list = bio->bi_next; cache->nr--; @@ -676,11 +706,8 @@ void guard_bio_eod(struct bio *bio) bio_truncate(bio, maxsector << 9); } -#define ALLOC_CACHE_MAX 512 -#define ALLOC_CACHE_SLACK 64 - -static void bio_alloc_cache_prune(struct bio_alloc_cache *cache, - unsigned int nr) +static int __bio_alloc_cache_prune(struct bio_alloc_cache *cache, + unsigned int nr) { unsigned int i = 0; struct bio *bio; @@ -692,6 +719,17 @@ static void bio_alloc_cache_prune(struct bio_alloc_cache *cache, if (++i == nr) break; } + return i; +} + +static void bio_alloc_cache_prune(struct bio_alloc_cache *cache, + unsigned int nr) +{ + nr -= __bio_alloc_cache_prune(cache, nr); + if (!READ_ONCE(cache->free_list)) { + bio_alloc_irq_cache_splice(cache); + __bio_alloc_cache_prune(cache, nr); + } } static int bio_cpu_dead(unsigned int cpu, struct hlist_node *node) @@ -728,6 +766,7 @@ static void bio_alloc_cache_destroy(struct bio_set *bs) static inline void bio_put_percpu_cache(struct bio *bio) { struct bio_alloc_cache *cache; + unsigned long flags; cache = per_cpu_ptr(bio->bi_pool->cache, get_cpu()); bio_uninit(bio); @@ -737,12 +776,15 @@ static inline void bio_put_percpu_cache(struct bio *bio) cache->free_list = bio; cache->nr++; } else { - put_cpu(); - bio_free(bio); - return; + local_irq_save(flags); + bio->bi_next = cache->free_list_irq; + cache->free_list_irq = bio; + cache->nr_irq++; + local_irq_restore(flags); } - if (cache->nr > ALLOC_CACHE_MAX + ALLOC_CACHE_SLACK) + if (READ_ONCE(cache->nr_irq) + cache->nr > + ALLOC_CACHE_MAX + ALLOC_CACHE_SLACK) bio_alloc_cache_prune(cache, ALLOC_CACHE_SLACK); put_cpu(); } From patchwork Tue Oct 18 19:50:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Begunkov X-Patchwork-Id: 13010983 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B33C3C433FE for ; Tue, 18 Oct 2022 19:52:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229914AbiJRTwp (ORCPT ); Tue, 18 Oct 2022 15:52:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51442 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229864AbiJRTwk (ORCPT ); Tue, 18 Oct 2022 15:52:40 -0400 Received: from mail-ej1-x62d.google.com (mail-ej1-x62d.google.com [IPv6:2a00:1450:4864:20::62d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 934E185ABC; 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[94.197.72.2]) by smtp.gmail.com with ESMTPSA id r1-20020a1709061ba100b0072a881b21d8sm7945858ejg.119.2022.10.18.12.52.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Oct 2022 12:52:08 -0700 (PDT) From: Pavel Begunkov To: Jens Axboe , linux-block@vger.kernel.org Cc: io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Pavel Begunkov Subject: [RFC for-next v2 4/4] io_uring/rw: enable bio caches for IRQ rw Date: Tue, 18 Oct 2022 20:50:58 +0100 Message-Id: X-Mailer: git-send-email 2.38.0 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Now we can use IOCB_ALLOC_CACHE not only for iopoll'ed reads/write but also for normal IRQ driven I/O. Signed-off-by: Pavel Begunkov --- io_uring/rw.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/io_uring/rw.c b/io_uring/rw.c index 100de2626e47..ff609b762742 100644 --- a/io_uring/rw.c +++ b/io_uring/rw.c @@ -667,6 +667,7 @@ static int io_rw_init_file(struct io_kiocb *req, fmode_t mode) ret = kiocb_set_rw_flags(kiocb, rw->flags); if (unlikely(ret)) return ret; + kiocb->ki_flags |= IOCB_ALLOC_CACHE; /* * If the file is marked O_NONBLOCK, still allow retry for it if it @@ -682,7 +683,7 @@ static int io_rw_init_file(struct io_kiocb *req, fmode_t mode) return -EOPNOTSUPP; kiocb->private = NULL; - kiocb->ki_flags |= IOCB_HIPRI | IOCB_ALLOC_CACHE; + kiocb->ki_flags |= IOCB_HIPRI; kiocb->ki_complete = io_complete_rw_iopoll; req->iopoll_completed = 0; } else {