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[2620:137:e000::1:20]) by mx.google.com with ESMTP id n8-20020a63a508000000b0044d72a10ab0si15609628pgf.342.2022.10.17.22.00.19; Mon, 17 Oct 2022 22:00:33 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@chromium.org header.s=google header.b=H4tQqYyG; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=chromium.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230268AbiJRE4x (ORCPT + 99 others); Tue, 18 Oct 2022 00:56:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59836 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230117AbiJRE4H (ORCPT ); Tue, 18 Oct 2022 00:56:07 -0400 Received: from mail-pg1-x52d.google.com (mail-pg1-x52d.google.com [IPv6:2607:f8b0:4864:20::52d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A6493A2AAE for ; Mon, 17 Oct 2022 21:56:01 -0700 (PDT) Received: by mail-pg1-x52d.google.com with SMTP id h185so12311080pgc.10 for ; Mon, 17 Oct 2022 21:56:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; 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=z6j2M3ywUHsS1+ykQ/OfNhi067lR0Bt99BN92Wk+zcw=; b=H4tQqYyGb10hilriYTv+DvIcK69suR/MknRv/uI/c7Sq8IVi/fkI5CgIYlaPZTn3R3 fcnApKLzJ2JC3QxaMOGgeKe9UHO+kkbWQ0logwCwtTSA1l45M7ttQfjxjlmDarqRhC/q +YH2hyuuTFmys4kuUH7wG9CPoEgVf6/DURZSo= 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=z6j2M3ywUHsS1+ykQ/OfNhi067lR0Bt99BN92Wk+zcw=; b=s5uiRztdyFh6JDyd40dx7FiK2xryZfvNxNa5yLUMZy2UuqQfMcPYn2C1pkgcv5j+K5 fcVfStp5WpoID7ok/iCugO47uLMnkvaG8rVUqWUao66aqgzNIvjLivH2K75g/jDw0DW8 EumFSBxUYmWPo1rqCm54PdTnGNJWJp+pujPYjnSI6xf5u8akFwbqTJAWXMoQhOWN9o3r m9NaJeKtBZ1vTwMOOUtwMsdm/rx/RstnOGRWsBq9+YgqLOK+LGBuS3qunx0BP8N6iYWr W1qB6iZvyfO/aQWegx3BpKayaGtbsKL5DxFuLShdZ1bWOQ4KZz1tFDBxyM9JQRRusFHx lLJA== X-Gm-Message-State: ACrzQf0dkoA2ONEkZM4oGGas5IrMsTk0s6TUNpyu/xS9XRUYtM/bQG9H 77Dm6rjB8IJLo84FY4D7+QSK5Q== X-Received: by 2002:a65:6849:0:b0:461:8779:2452 with SMTP id q9-20020a656849000000b0046187792452mr1089661pgt.383.1666068961162; Mon, 17 Oct 2022 21:56:01 -0700 (PDT) Received: from tigerii.tok.corp.google.com ([2401:fa00:8f:203:17a9:73b0:c262:eccd]) by smtp.gmail.com with ESMTPSA id p4-20020a170902e74400b0017b69f99321sm7549220plf.219.2022.10.17.21.55.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Oct 2022 21:56:00 -0700 (PDT) From: Sergey Senozhatsky To: Andrew Morton , Minchan Kim Cc: Nitin Gupta , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Sergey Senozhatsky Subject: [PATCHv4 8/9] zram: Clarify writeback_store() comment Date: Tue, 18 Oct 2022 13:55:32 +0900 Message-Id: <20221018045533.2396670-9-senozhatsky@chromium.org> X-Mailer: git-send-email 2.38.0.413.g74048e4d9e-goog In-Reply-To: <20221018045533.2396670-1-senozhatsky@chromium.org> References: <20221018045533.2396670-1-senozhatsky@chromium.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1747000212186742491?= X-GMAIL-MSGID: =?utf-8?q?1747000212186742491?= Re-phrase writeback BIO error comment. Reported-by: Andrew Morton Signed-off-by: Sergey Senozhatsky --- drivers/block/zram/zram_drv.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 5d760467e0bc..6b56f6f2ce82 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -758,8 +758,12 @@ static ssize_t writeback_store(struct device *dev, zram_clear_flag(zram, index, ZRAM_IDLE); zram_slot_unlock(zram, index); /* - * Return last IO error unless every IO were - * not suceeded. + * BIO errors are not fatal, we continue and simply + * attempt to writeback the remaining objects (pages). + * At the same time we need to signal user-space that + * some writes (at least one, but also could be all of + * them) were not successful and we do so by returning + * the most recent BIO error. */ ret = err; continue;