From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f180.google.com (mail-pf1-f180.google.com [209.85.210.180]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4F594296BBA for ; Mon, 24 Nov 2025 02:57:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.180 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763953068; cv=none; b=W2sIqHC7MZki6muZDgLqwPjDKGwvf5l15iObAtsCilSgPfWr9owxcpec+9kMjijzovadWm6bKmaQ8WC2g8Lk1p6084Wm7dKVsQCqJjN7qXrG9UVG4EhBIgauPnIIaewiLzEurS8pRfgDyoK6hNZhaqlaSDkGsJqk3O9V/2tNoHc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763953068; c=relaxed/simple; bh=W39EvEsOKZnDPgVc3vjL1URC280/rs9OxMSKpDWz+C0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=fF5a6aFRJHiK85qyFNGOqd4V+xK8+uF8PPiTfkUu4Nzj1fCICJ/iLbJ2oIqOjuL4el0HZMVCDgpaGpQPv3aaGMIunV2iK1yapxAuqoyPjyOQFc78nd7lQplvonhFe47HG9YQTTz8b5Prucod3XrFVAHBGp5R4oJZcmDcdVawUgE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=es3r2e5j; arc=none smtp.client-ip=209.85.210.180 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="es3r2e5j" Received: by mail-pf1-f180.google.com with SMTP id d2e1a72fcca58-7b89c1ce9easo4384814b3a.2 for ; Sun, 23 Nov 2025 18:57:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1763953064; x=1764557864; darn=vger.kernel.org; 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=RkWhYF4f1lhsSHEbmYsrWUEDoM/XD4r0C+XpnxkiI8c=; b=es3r2e5jxI9XJcfPMggIH8P8nNDiDjsJ0Me9LddzgHyb1i3TMSJtaOT3/jRq3q83mZ O5R7VNra46ae/nXXcqHGRvbakFLvXVvWpqHttaumyNkJLv4Zb+XqcrO9csRKskEcZyrv zhSoSAEjliIrWF/OsSQq/t/1hosJJam+Butbg/YZhSj6E8yc6gSq1lWWg4Cw3sBgkg1M 0we5vkxSFzU1RmteCbQwkMDswnkYpujwZsa6/YCxINQBoGxFgr5FFGrfPMRUG/vSjZ0o ASgA9iSHxvsS2dFmSUo1PjqiW7Utmp9ZrcYM66hXfsmuMnrQrO8uuH6nB0cm7EDVLIdt ImsA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763953064; x=1764557864; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=RkWhYF4f1lhsSHEbmYsrWUEDoM/XD4r0C+XpnxkiI8c=; b=jjpRVcsc4fKa/6uoIUJ4lzSz7wSFIdnZh6VAMewLZwuc7rW5P+PvbBEvoKh+B/yja+ FdNa/oV4RPDZ7EVqJTs9sdoMeD8GaRjVdcWfm1+75bNY0WfSPPn2niaTV+1dAsVAiV5J Qk84F/wFhCXyNmkCoXkK3+BUjJilrVOOYcUax3tX7azYJUyNAcnUhN+oolp5s7a4byc3 iiComa/S9RGNBsyLMWelXMrTCMED+uKAsYODZDF55yE/kj7Lms4/tVMYJLJSA44rfqps rQUsUK2/KcbTl7YcCKjQJmfhDom46kFa56csZDDu9NmidRvC2s1JcRvB0gHMOc5V2cCF /COg== X-Forwarded-Encrypted: i=1; AJvYcCXqLKM8x5UYb03N8BMX628qHxQ/F28jKJSpJ7kmWG2V7TEiFvAx9XhXiO606Wsn4WHwkbk=@vger.kernel.org X-Gm-Message-State: AOJu0Yzq4sFZi9merjAeOrzC4/N6yVdsdviNp7z5OctuSa797aGIw+of 5XEDhI6ze64DUHSedf9fzGxeRls0w5JCkdTIsG3WcBN+m6pJh/W4T2CV X-Gm-Gg: ASbGncsbsVNw9bQS4oLLr5M4LB2RFFwt17JrdKmM5M3AQLg18ZIw+GbJn8Violy7vDl GPTXZWj7OnkxIuaJ5obYxl/H9Veg4u8Dad7VLKkbk238CvN4dmlyI0TwDZ+4XvkkeGZFv/HalJH t7/AX/6BiGKJN5CUdUvAZgbHiUNOW9LDRm0rQRbyBTfcyjJ6AO96z7f4Lw+cEqqmzuOnX22ffey 42XH8eyZ7EDPnSOxGAQDy8ZZOT2TmXJlAK6V7Zz5RmJrKcXxnUfvych2ygaXaNOc9A/d6NjEKwV ahDL3qjf3Uaw71C4T3fmY3CBligFI2Ny4Cguoundh473giH1ZNCIuBI4Jgy/uoAVk3widWmEYuJ qt7ob9w696tkGVrGwbEbW0kdfgRHL9v5B1To1PBkDrMNZRbO/+0hbcR4YCG97LaIxSNveLL2HuN 9+uvCcVvhM2yXkDfs21rrtfQEiinXqmghSOiEbHEwkuajtzSI= X-Google-Smtp-Source: AGHT+IH2vl9a4qHa0wFFFsUNbzMzey1IZwx6tJlzdt+jREZgI3T8WYYR2vo3qAu15ZJ2v/Ev109wPg== X-Received: by 2002:a05:701b:2803:b0:11b:2138:476a with SMTP id a92af1059eb24-11c9d8539eamr4726588c88.27.1763953064432; Sun, 23 Nov 2025 18:57:44 -0800 (PST) Received: from localhost (ip70-175-132-216.oc.oc.cox.net. [70.175.132.216]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-11c93e6dbc8sm65938624c88.10.2025.11.23.18.57.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 23 Nov 2025 18:57:44 -0800 (PST) From: Chaitanya Kulkarni To: axboe@kernel.dk, agk@redhat.com, snitzer@kernel.org, mpatocka@redhat.com, song@kernel.org, yukuai@fnnas.com, hch@lst.de, sagi@grimberg.me, kch@nvidia.com, jaegeuk@kernel.org, chao@kernel.org, cem@kernel.org Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, linux-nvme@lists.infradead.org, linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel.org, bpf@vger.kernel.org, Chaitanya Kulkarni Subject: [PATCH V2 1/5] block: ignore discard return value Date: Sun, 23 Nov 2025 18:57:33 -0800 Message-Id: <20251124025737.203571-2-ckulkarnilinux@gmail.com> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20251124025737.203571-1-ckulkarnilinux@gmail.com> References: <20251124025737.203571-1-ckulkarnilinux@gmail.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit __blkdev_issue_discard() always returns 0, making the error check in blkdev_issue_discard() dead code. In function blkdev_issue_discard() initialize ret = 0, remove ret assignment from __blkdev_issue_discard(), rely on bio == NULL check to call submit_bio_wait(), preserve submit_bio_wait() error handling, and preserve -EOPNOTSUPP to 0 mapping. Signed-off-by: Chaitanya Kulkarni --- block/blk-lib.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/block/blk-lib.c b/block/blk-lib.c index 3030a772d3aa..19e0203cc18a 100644 --- a/block/blk-lib.c +++ b/block/blk-lib.c @@ -87,11 +87,11 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector, { struct bio *bio = NULL; struct blk_plug plug; - int ret; + int ret = 0; blk_start_plug(&plug); - ret = __blkdev_issue_discard(bdev, sector, nr_sects, gfp_mask, &bio); - if (!ret && bio) { + __blkdev_issue_discard(bdev, sector, nr_sects, gfp_mask, &bio); + if (bio) { ret = submit_bio_wait(bio); if (ret == -EOPNOTSUPP) ret = 0; -- 2.40.0