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[82.218.28.181]) by smtp.gmail.com with ESMTPSA id bd21-20020a056402207500b0046bb7503d9asm728424edb.24.2022.12.09.06.53.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Dec 2022 06:53:32 -0800 (PST) From: =?utf-8?q?Christoph_B=C3=B6hmwalder?= To: Jens Axboe Cc: drbd-dev@lists.linbit.com, linux-kernel@vger.kernel.org, Lars Ellenberg , Philipp Reisner , linux-block@vger.kernel.org, =?utf-8?q?Christoph_B=C3=B6hmwalder?= , Joel Colledge Subject: [PATCH 1/8] drbd: adjust drbd_limits license header Date: Fri, 9 Dec 2022 15:53:20 +0100 Message-Id: <20221209145327.2272271-2-christoph.boehmwalder@linbit.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221209145327.2272271-1-christoph.boehmwalder@linbit.com> References: <20221209145327.2272271-1-christoph.boehmwalder@linbit.com> MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,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?1751748597348282185?= X-GMAIL-MSGID: =?utf-8?q?1751748597348282185?= See also commit 93c68cc46a07 ("drbd: use consistent license"). We only want to license drbd under GPL-2.0, so use the corresponding SPDX header consistently. Signed-off-by: Christoph Böhmwalder Reviewed-by: Joel Colledge --- include/linux/drbd_limits.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 9e33f7038bea..d64271ccece4 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -1,4 +1,4 @@ -/* SPDX-License-Identifier: GPL-2.0 */ +/* SPDX-License-Identifier: GPL-2.0-only */ /* drbd_limits.h This file is part of DRBD by Philipp Reisner and Lars Ellenberg. 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[82.218.28.181]) by smtp.gmail.com with ESMTPSA id bd21-20020a056402207500b0046bb7503d9asm728424edb.24.2022.12.09.06.53.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Dec 2022 06:53:33 -0800 (PST) From: =?utf-8?q?Christoph_B=C3=B6hmwalder?= To: Jens Axboe Cc: drbd-dev@lists.linbit.com, linux-kernel@vger.kernel.org, Lars Ellenberg , Philipp Reisner , linux-block@vger.kernel.org, Robert Altnoeder , =?utf-8?q?Christoph_B=C3=B6?= =?utf-8?q?hmwalder?= , Joel Colledge Subject: [PATCH 2/8] drbd: fix DRBD_VOLUME_MAX 65535 -> 65534 Date: Fri, 9 Dec 2022 15:53:21 +0100 Message-Id: <20221209145327.2272271-3-christoph.boehmwalder@linbit.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221209145327.2272271-1-christoph.boehmwalder@linbit.com> References: <20221209145327.2272271-1-christoph.boehmwalder@linbit.com> MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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?1751748603763742853?= X-GMAIL-MSGID: =?utf-8?q?1751748603763742853?= From: Robert Altnoeder The protocol uses -1 as a reserved value for 'no specific volume', and since the protocol field is a 16 bit unsigned value, -1 is converted to 65535. Therefore, limit the range of valid volume numbers to [0, 65534]. Signed-off-by: Robert Altnoeder Signed-off-by: Christoph Böhmwalder Reviewed-by: Joel Colledge --- include/linux/drbd_limits.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index d64271ccece4..058f7600f79c 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -21,7 +21,7 @@ #define DRBD_MINOR_COUNT_DEF 32 #define DRBD_MINOR_COUNT_SCALE '1' -#define DRBD_VOLUME_MAX 65535 +#define DRBD_VOLUME_MAX 65534 #define DRBD_DIALOG_REFRESH_MIN 0 #define DRBD_DIALOG_REFRESH_MAX 600 From patchwork Fri Dec 9 14:53:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Christoph_B=C3=B6hmwalder?= X-Patchwork-Id: 31795 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:f944:0:0:0:0:0 with SMTP id q4csp821247wrr; Fri, 9 Dec 2022 06:54:21 -0800 (PST) X-Google-Smtp-Source: AA0mqf59i9JuO5tsBBXGrFS3DR0ElfFEPI0/VsugHc0wfl3E+4fhSMjxoa9oesOnPmb35fJVCOwQ X-Received: by 2002:a17:902:74c5:b0:187:dc9:ef64 with SMTP id f5-20020a17090274c500b001870dc9ef64mr6710583plt.60.1670597661431; Fri, 09 Dec 2022 06:54:21 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1670597661; cv=none; d=google.com; s=arc-20160816; b=XyXGex3M6OYm1wcphpCadXpEZU2vEYKT/nRypK4wOx3CfMJJIKDruBld6DPF5Qgm/o 1p8eNXgryT3xj2qOMCxpDmKKlfymAQiobc7/9lbntn1EuatdUYqRI8guKZft/QsUaRiC Xq8UR1vyAw+9CEQp5rTFQiBC3KhR3rHvncjsf/91iPDgN15W8U7OIxLzRiFhNatfYpt2 8BwzvuIvl+qSLvR9DsKlksEgk38FMxnKrANVgNOFirTEHkAkL3us84X2x4GRzpC9NH0y d43JyxVjT8h0atCSyP+qglMyLE4LjYXU2Hg4Wkk/JOmJIuoA6ssNKPOy9GVByxCMjk86 LKbg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=Q42egUmEzuPqHWtFCe0+w1qRK0bznL4xm46gw6YdelU=; b=dlepumSKAycWObAPj6RKLtrKTLbKNqTUkp3HUCrUpuTK3acwaLSzKA1+ItvQVOKn7b nz70iK3V3aS78eZuYwzwFkUKGhhOBVATGbRKsMH9Py6exic6NW3R7hrgNyFRFhhO1iu+ doRqI2jOKnAwa3DIGjQxO20XwdONrzSav6hzIcZkUYx5/ef+d3UG9avWb4/H/StKGs9Q +uQ0NKwMQWPO8clC/ErC+hKuoFROYfNgWaqU+XQp30Dsr5EcOJk52yVPDZLnXxX2dypd ifbKi4Vt8DJjprzPh79UI7SLgwAdr3MxDgkKzaQRk/7+8pljJ3gx9hOK7J/JOwmiORVf Vd1w== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linbit-com.20210112.gappssmtp.com header.s=20210112 header.b=ZihNvqjY; 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 Received: from out1.vger.email (out1.vger.email. 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[82.218.28.181]) by smtp.gmail.com with ESMTPSA id bd21-20020a056402207500b0046bb7503d9asm728424edb.24.2022.12.09.06.53.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Dec 2022 06:53:33 -0800 (PST) From: =?utf-8?q?Christoph_B=C3=B6hmwalder?= To: Jens Axboe Cc: drbd-dev@lists.linbit.com, linux-kernel@vger.kernel.org, Lars Ellenberg , Philipp Reisner , linux-block@vger.kernel.org, =?utf-8?q?Christoph_B=C3=B6hmwalder?= , Joel Colledge Subject: [PATCH 3/8] drbd: make limits unsigned Date: Fri, 9 Dec 2022 15:53:22 +0100 Message-Id: <20221209145327.2272271-4-christoph.boehmwalder@linbit.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221209145327.2272271-1-christoph.boehmwalder@linbit.com> References: <20221209145327.2272271-1-christoph.boehmwalder@linbit.com> MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,UPPERCASE_50_75 autolearn=no 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?1751748613186869585?= X-GMAIL-MSGID: =?utf-8?q?1751748613186869585?= These are almost always used as unsigned integers, so mark them as such. Signed-off-by: Christoph Böhmwalder Reviewed-by: Joel Colledge --- include/linux/drbd_limits.h | 202 ++++++++++++++++++------------------ 1 file changed, 101 insertions(+), 101 deletions(-) diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 058f7600f79c..5b042fb427e9 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -16,123 +16,123 @@ #define DEBUG_RANGE_CHECK 0 -#define DRBD_MINOR_COUNT_MIN 1 -#define DRBD_MINOR_COUNT_MAX 255 -#define DRBD_MINOR_COUNT_DEF 32 +#define DRBD_MINOR_COUNT_MIN 1U +#define DRBD_MINOR_COUNT_MAX 255U +#define DRBD_MINOR_COUNT_DEF 32U #define DRBD_MINOR_COUNT_SCALE '1' -#define DRBD_VOLUME_MAX 65534 +#define DRBD_VOLUME_MAX 65534U -#define DRBD_DIALOG_REFRESH_MIN 0 -#define DRBD_DIALOG_REFRESH_MAX 600 +#define DRBD_DIALOG_REFRESH_MIN 0U +#define DRBD_DIALOG_REFRESH_MAX 600U #define DRBD_DIALOG_REFRESH_SCALE '1' /* valid port number */ -#define DRBD_PORT_MIN 1 -#define DRBD_PORT_MAX 0xffff +#define DRBD_PORT_MIN 1U +#define DRBD_PORT_MAX 0xffffU #define DRBD_PORT_SCALE '1' /* startup { */ /* if you want more than 3.4 days, disable */ -#define DRBD_WFC_TIMEOUT_MIN 0 -#define DRBD_WFC_TIMEOUT_MAX 300000 -#define DRBD_WFC_TIMEOUT_DEF 0 +#define DRBD_WFC_TIMEOUT_MIN 0U +#define DRBD_WFC_TIMEOUT_MAX 300000U +#define DRBD_WFC_TIMEOUT_DEF 0U #define DRBD_WFC_TIMEOUT_SCALE '1' -#define DRBD_DEGR_WFC_TIMEOUT_MIN 0 -#define DRBD_DEGR_WFC_TIMEOUT_MAX 300000 -#define DRBD_DEGR_WFC_TIMEOUT_DEF 0 +#define DRBD_DEGR_WFC_TIMEOUT_MIN 0U +#define DRBD_DEGR_WFC_TIMEOUT_MAX 300000U +#define DRBD_DEGR_WFC_TIMEOUT_DEF 0U #define DRBD_DEGR_WFC_TIMEOUT_SCALE '1' -#define DRBD_OUTDATED_WFC_TIMEOUT_MIN 0 -#define DRBD_OUTDATED_WFC_TIMEOUT_MAX 300000 -#define DRBD_OUTDATED_WFC_TIMEOUT_DEF 0 +#define DRBD_OUTDATED_WFC_TIMEOUT_MIN 0U +#define DRBD_OUTDATED_WFC_TIMEOUT_MAX 300000U +#define DRBD_OUTDATED_WFC_TIMEOUT_DEF 0U #define DRBD_OUTDATED_WFC_TIMEOUT_SCALE '1' /* }*/ /* net { */ /* timeout, unit centi seconds * more than one minute timeout is not useful */ -#define DRBD_TIMEOUT_MIN 1 -#define DRBD_TIMEOUT_MAX 600 -#define DRBD_TIMEOUT_DEF 60 /* 6 seconds */ +#define DRBD_TIMEOUT_MIN 1U +#define DRBD_TIMEOUT_MAX 600U +#define DRBD_TIMEOUT_DEF 60U /* 6 seconds */ #define DRBD_TIMEOUT_SCALE '1' /* If backing disk takes longer than disk_timeout, mark the disk as failed */ -#define DRBD_DISK_TIMEOUT_MIN 0 /* 0 = disabled */ -#define DRBD_DISK_TIMEOUT_MAX 6000 /* 10 Minutes */ -#define DRBD_DISK_TIMEOUT_DEF 0 /* disabled */ +#define DRBD_DISK_TIMEOUT_MIN 0U /* 0 = disabled */ +#define DRBD_DISK_TIMEOUT_MAX 6000U /* 10 Minutes */ +#define DRBD_DISK_TIMEOUT_DEF 0U /* disabled */ #define DRBD_DISK_TIMEOUT_SCALE '1' /* active connection retries when C_WF_CONNECTION */ -#define DRBD_CONNECT_INT_MIN 1 -#define DRBD_CONNECT_INT_MAX 120 -#define DRBD_CONNECT_INT_DEF 10 /* seconds */ +#define DRBD_CONNECT_INT_MIN 1U +#define DRBD_CONNECT_INT_MAX 120U +#define DRBD_CONNECT_INT_DEF 10U /* seconds */ #define DRBD_CONNECT_INT_SCALE '1' /* keep-alive probes when idle */ -#define DRBD_PING_INT_MIN 1 -#define DRBD_PING_INT_MAX 120 -#define DRBD_PING_INT_DEF 10 +#define DRBD_PING_INT_MIN 1U +#define DRBD_PING_INT_MAX 120U +#define DRBD_PING_INT_DEF 10U #define DRBD_PING_INT_SCALE '1' /* timeout for the ping packets.*/ -#define DRBD_PING_TIMEO_MIN 1 -#define DRBD_PING_TIMEO_MAX 300 -#define DRBD_PING_TIMEO_DEF 5 +#define DRBD_PING_TIMEO_MIN 1U +#define DRBD_PING_TIMEO_MAX 300U +#define DRBD_PING_TIMEO_DEF 5U #define DRBD_PING_TIMEO_SCALE '1' /* max number of write requests between write barriers */ -#define DRBD_MAX_EPOCH_SIZE_MIN 1 -#define DRBD_MAX_EPOCH_SIZE_MAX 20000 -#define DRBD_MAX_EPOCH_SIZE_DEF 2048 +#define DRBD_MAX_EPOCH_SIZE_MIN 1U +#define DRBD_MAX_EPOCH_SIZE_MAX 20000U +#define DRBD_MAX_EPOCH_SIZE_DEF 2048U #define DRBD_MAX_EPOCH_SIZE_SCALE '1' /* I don't think that a tcp send buffer of more than 10M is useful */ -#define DRBD_SNDBUF_SIZE_MIN 0 -#define DRBD_SNDBUF_SIZE_MAX (10<<20) -#define DRBD_SNDBUF_SIZE_DEF 0 +#define DRBD_SNDBUF_SIZE_MIN 0U +#define DRBD_SNDBUF_SIZE_MAX (10U<<20) +#define DRBD_SNDBUF_SIZE_DEF 0U #define DRBD_SNDBUF_SIZE_SCALE '1' -#define DRBD_RCVBUF_SIZE_MIN 0 -#define DRBD_RCVBUF_SIZE_MAX (10<<20) -#define DRBD_RCVBUF_SIZE_DEF 0 +#define DRBD_RCVBUF_SIZE_MIN 0U +#define DRBD_RCVBUF_SIZE_MAX (10U<<20) +#define DRBD_RCVBUF_SIZE_DEF 0U #define DRBD_RCVBUF_SIZE_SCALE '1' /* @4k PageSize -> 128kB - 512MB */ -#define DRBD_MAX_BUFFERS_MIN 32 -#define DRBD_MAX_BUFFERS_MAX 131072 -#define DRBD_MAX_BUFFERS_DEF 2048 +#define DRBD_MAX_BUFFERS_MIN 32U +#define DRBD_MAX_BUFFERS_MAX 131072U +#define DRBD_MAX_BUFFERS_DEF 2048U #define DRBD_MAX_BUFFERS_SCALE '1' /* @4k PageSize -> 4kB - 512MB */ -#define DRBD_UNPLUG_WATERMARK_MIN 1 -#define DRBD_UNPLUG_WATERMARK_MAX 131072 +#define DRBD_UNPLUG_WATERMARK_MIN 1U +#define DRBD_UNPLUG_WATERMARK_MAX 131072U #define DRBD_UNPLUG_WATERMARK_DEF (DRBD_MAX_BUFFERS_DEF/16) #define DRBD_UNPLUG_WATERMARK_SCALE '1' /* 0 is disabled. * 200 should be more than enough even for very short timeouts */ -#define DRBD_KO_COUNT_MIN 0 -#define DRBD_KO_COUNT_MAX 200 -#define DRBD_KO_COUNT_DEF 7 +#define DRBD_KO_COUNT_MIN 0U +#define DRBD_KO_COUNT_MAX 200U +#define DRBD_KO_COUNT_DEF 7U #define DRBD_KO_COUNT_SCALE '1' /* } */ /* syncer { */ /* FIXME allow rate to be zero? */ -#define DRBD_RESYNC_RATE_MIN 1 +#define DRBD_RESYNC_RATE_MIN 1U /* channel bonding 10 GbE, or other hardware */ #define DRBD_RESYNC_RATE_MAX (4 << 20) -#define DRBD_RESYNC_RATE_DEF 250 +#define DRBD_RESYNC_RATE_DEF 250U #define DRBD_RESYNC_RATE_SCALE 'k' /* kilobytes */ -#define DRBD_AL_EXTENTS_MIN 67 +#define DRBD_AL_EXTENTS_MIN 67U /* we use u16 as "slot number", (u16)~0 is "FREE". * If you use >= 292 kB on-disk ring buffer, * this is the maximum you can use: */ -#define DRBD_AL_EXTENTS_MAX 0xfffe -#define DRBD_AL_EXTENTS_DEF 1237 +#define DRBD_AL_EXTENTS_MAX 0xfffeU +#define DRBD_AL_EXTENTS_DEF 1237U #define DRBD_AL_EXTENTS_SCALE '1' #define DRBD_MINOR_NUMBER_MIN -1 @@ -147,9 +147,9 @@ * the upper limit with 64bit kernel, enough ram and flexible meta data * is 1 PiB, currently. */ /* DRBD_MAX_SECTORS */ -#define DRBD_DISK_SIZE_MIN 0 -#define DRBD_DISK_SIZE_MAX (1 * (2LLU << 40)) -#define DRBD_DISK_SIZE_DEF 0 /* = disabled = no user size... */ +#define DRBD_DISK_SIZE_MIN 0LLU +#define DRBD_DISK_SIZE_MAX (1LLU * (2LLU << 40)) +#define DRBD_DISK_SIZE_DEF 0LLU /* = disabled = no user size... */ #define DRBD_DISK_SIZE_SCALE 's' /* sectors */ #define DRBD_ON_IO_ERROR_DEF EP_DETACH @@ -162,39 +162,39 @@ #define DRBD_ON_CONGESTION_DEF OC_BLOCK #define DRBD_READ_BALANCING_DEF RB_PREFER_LOCAL -#define DRBD_MAX_BIO_BVECS_MIN 0 -#define DRBD_MAX_BIO_BVECS_MAX 128 -#define DRBD_MAX_BIO_BVECS_DEF 0 +#define DRBD_MAX_BIO_BVECS_MIN 0U +#define DRBD_MAX_BIO_BVECS_MAX 128U +#define DRBD_MAX_BIO_BVECS_DEF 0U #define DRBD_MAX_BIO_BVECS_SCALE '1' -#define DRBD_C_PLAN_AHEAD_MIN 0 -#define DRBD_C_PLAN_AHEAD_MAX 300 -#define DRBD_C_PLAN_AHEAD_DEF 20 +#define DRBD_C_PLAN_AHEAD_MIN 0U +#define DRBD_C_PLAN_AHEAD_MAX 300U +#define DRBD_C_PLAN_AHEAD_DEF 20U #define DRBD_C_PLAN_AHEAD_SCALE '1' -#define DRBD_C_DELAY_TARGET_MIN 1 -#define DRBD_C_DELAY_TARGET_MAX 100 -#define DRBD_C_DELAY_TARGET_DEF 10 +#define DRBD_C_DELAY_TARGET_MIN 1U +#define DRBD_C_DELAY_TARGET_MAX 100U +#define DRBD_C_DELAY_TARGET_DEF 10U #define DRBD_C_DELAY_TARGET_SCALE '1' -#define DRBD_C_FILL_TARGET_MIN 0 -#define DRBD_C_FILL_TARGET_MAX (1<<20) /* 500MByte in sec */ -#define DRBD_C_FILL_TARGET_DEF 100 /* Try to place 50KiB in socket send buffer during resync */ +#define DRBD_C_FILL_TARGET_MIN 0U +#define DRBD_C_FILL_TARGET_MAX (1U<<20) /* 500MByte in sec */ +#define DRBD_C_FILL_TARGET_DEF 100U /* Try to place 50KiB in socket send buffer during resync */ #define DRBD_C_FILL_TARGET_SCALE 's' /* sectors */ -#define DRBD_C_MAX_RATE_MIN 250 -#define DRBD_C_MAX_RATE_MAX (4 << 20) -#define DRBD_C_MAX_RATE_DEF 102400 +#define DRBD_C_MAX_RATE_MIN 250U +#define DRBD_C_MAX_RATE_MAX (4U << 20) +#define DRBD_C_MAX_RATE_DEF 102400U #define DRBD_C_MAX_RATE_SCALE 'k' /* kilobytes */ -#define DRBD_C_MIN_RATE_MIN 0 -#define DRBD_C_MIN_RATE_MAX (4 << 20) -#define DRBD_C_MIN_RATE_DEF 250 +#define DRBD_C_MIN_RATE_MIN 0U +#define DRBD_C_MIN_RATE_MAX (4U << 20) +#define DRBD_C_MIN_RATE_DEF 250U #define DRBD_C_MIN_RATE_SCALE 'k' /* kilobytes */ -#define DRBD_CONG_FILL_MIN 0 -#define DRBD_CONG_FILL_MAX (10<<21) /* 10GByte in sectors */ -#define DRBD_CONG_FILL_DEF 0 +#define DRBD_CONG_FILL_MIN 0U +#define DRBD_CONG_FILL_MAX (10U<<21) /* 10GByte in sectors */ +#define DRBD_CONG_FILL_DEF 0U #define DRBD_CONG_FILL_SCALE 's' /* sectors */ #define DRBD_CONG_EXTENTS_MIN DRBD_AL_EXTENTS_MIN @@ -204,48 +204,48 @@ #define DRBD_PROTOCOL_DEF DRBD_PROT_C -#define DRBD_DISK_BARRIER_DEF 0 -#define DRBD_DISK_FLUSHES_DEF 1 -#define DRBD_DISK_DRAIN_DEF 1 -#define DRBD_MD_FLUSHES_DEF 1 -#define DRBD_TCP_CORK_DEF 1 -#define DRBD_AL_UPDATES_DEF 1 +#define DRBD_DISK_BARRIER_DEF 0U +#define DRBD_DISK_FLUSHES_DEF 1U +#define DRBD_DISK_DRAIN_DEF 1U +#define DRBD_MD_FLUSHES_DEF 1U +#define DRBD_TCP_CORK_DEF 1U +#define DRBD_AL_UPDATES_DEF 1U /* We used to ignore the discard_zeroes_data setting. * To not change established (and expected) behaviour, * by default assume that, for discard_zeroes_data=0, * we can make that an effective discard_zeroes_data=1, * if we only explicitly zero-out unaligned partial chunks. */ -#define DRBD_DISCARD_ZEROES_IF_ALIGNED_DEF 1 +#define DRBD_DISCARD_ZEROES_IF_ALIGNED_DEF 1U /* Some backends pretend to support WRITE SAME, * but fail such requests when they are actually submitted. * This is to tell DRBD to not even try. */ -#define DRBD_DISABLE_WRITE_SAME_DEF 0 +#define DRBD_DISABLE_WRITE_SAME_DEF 0U -#define DRBD_ALLOW_TWO_PRIMARIES_DEF 0 -#define DRBD_ALWAYS_ASBP_DEF 0 -#define DRBD_USE_RLE_DEF 1 -#define DRBD_CSUMS_AFTER_CRASH_ONLY_DEF 0 +#define DRBD_ALLOW_TWO_PRIMARIES_DEF 0U +#define DRBD_ALWAYS_ASBP_DEF 0U +#define DRBD_USE_RLE_DEF 1U +#define DRBD_CSUMS_AFTER_CRASH_ONLY_DEF 0U -#define DRBD_AL_STRIPES_MIN 1 -#define DRBD_AL_STRIPES_MAX 1024 -#define DRBD_AL_STRIPES_DEF 1 +#define DRBD_AL_STRIPES_MIN 1U +#define DRBD_AL_STRIPES_MAX 1024U +#define DRBD_AL_STRIPES_DEF 1U #define DRBD_AL_STRIPES_SCALE '1' -#define DRBD_AL_STRIPE_SIZE_MIN 4 -#define DRBD_AL_STRIPE_SIZE_MAX 16777216 -#define DRBD_AL_STRIPE_SIZE_DEF 32 +#define DRBD_AL_STRIPE_SIZE_MIN 4U +#define DRBD_AL_STRIPE_SIZE_MAX 16777216U +#define DRBD_AL_STRIPE_SIZE_DEF 32U #define DRBD_AL_STRIPE_SIZE_SCALE 'k' /* kilobytes */ -#define DRBD_SOCKET_CHECK_TIMEO_MIN 0 +#define DRBD_SOCKET_CHECK_TIMEO_MIN 0U #define DRBD_SOCKET_CHECK_TIMEO_MAX DRBD_PING_TIMEO_MAX -#define DRBD_SOCKET_CHECK_TIMEO_DEF 0 +#define DRBD_SOCKET_CHECK_TIMEO_DEF 0U #define DRBD_SOCKET_CHECK_TIMEO_SCALE '1' -#define DRBD_RS_DISCARD_GRANULARITY_MIN 0 -#define DRBD_RS_DISCARD_GRANULARITY_MAX (1<<20) /* 1MiByte */ -#define DRBD_RS_DISCARD_GRANULARITY_DEF 0 /* disabled by default */ +#define DRBD_RS_DISCARD_GRANULARITY_MIN 0U +#define DRBD_RS_DISCARD_GRANULARITY_MAX (1U<<20) /* 1MiByte */ +#define DRBD_RS_DISCARD_GRANULARITY_DEF 0U /* disabled by default */ #define DRBD_RS_DISCARD_GRANULARITY_SCALE '1' /* bytes */ #endif From patchwork Fri Dec 9 14:53:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Christoph_B=C3=B6hmwalder?= X-Patchwork-Id: 31794 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:f944:0:0:0:0:0 with SMTP id q4csp821214wrr; Fri, 9 Dec 2022 06:54:17 -0800 (PST) X-Google-Smtp-Source: AA0mqf6SJwSCES7kolE3x2+3nYBbJnf+/LWnVVMYt875oVJ9t48EAWMHVGkKqHZyuKG1jyytIWtu X-Received: by 2002:a05:6a21:2d07:b0:aa:15b6:6322 with SMTP id tw7-20020a056a212d0700b000aa15b66322mr8700409pzb.42.1670597657380; Fri, 09 Dec 2022 06:54:17 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1670597657; cv=none; d=google.com; s=arc-20160816; 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[82.218.28.181]) by smtp.gmail.com with ESMTPSA id bd21-20020a056402207500b0046bb7503d9asm728424edb.24.2022.12.09.06.53.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Dec 2022 06:53:34 -0800 (PST) From: =?utf-8?q?Christoph_B=C3=B6hmwalder?= To: Jens Axboe Cc: drbd-dev@lists.linbit.com, linux-kernel@vger.kernel.org, Lars Ellenberg , Philipp Reisner , linux-block@vger.kernel.org, =?utf-8?q?Christoph_B=C3=B6hmwalder?= , Joel Colledge Subject: [PATCH 4/8] drbd: remove unnecessary assignment in vli_encode_bits Date: Fri, 9 Dec 2022 15:53:23 +0100 Message-Id: <20221209145327.2272271-5-christoph.boehmwalder@linbit.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221209145327.2272271-1-christoph.boehmwalder@linbit.com> References: <20221209145327.2272271-1-christoph.boehmwalder@linbit.com> MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,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?1751748609139127080?= X-GMAIL-MSGID: =?utf-8?q?1751748609139127080?= Signed-off-by: Christoph Böhmwalder Reviewed-by: Joel Colledge --- drivers/block/drbd/drbd_vli.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/drbd/drbd_vli.h b/drivers/block/drbd/drbd_vli.h index 1ee81e3c2152..941c511cc4da 100644 --- a/drivers/block/drbd/drbd_vli.h +++ b/drivers/block/drbd/drbd_vli.h @@ -327,7 +327,7 @@ static inline int bitstream_get_bits(struct bitstream *bs, u64 *out, int bits) */ static inline int vli_encode_bits(struct bitstream *bs, u64 in) { - u64 code = code; + u64 code; int bits = __vli_encode_bits(&code, in); if (bits <= 0) From patchwork Fri Dec 9 14:53:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Christoph_B=C3=B6hmwalder?= X-Patchwork-Id: 31799 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:f944:0:0:0:0:0 with SMTP id q4csp823502wrr; Fri, 9 Dec 2022 06:59:46 -0800 (PST) X-Google-Smtp-Source: AA0mqf5/c+/X+eQiEtkNY1zBpNJzuchcF+qgkO/HMpTPB9IgvHLuKRU9CG+my9bozPlnsuYkC4Tu X-Received: by 2002:a17:90a:e38b:b0:219:dfff:8300 with SMTP id b11-20020a17090ae38b00b00219dfff8300mr6097474pjz.32.1670597986103; Fri, 09 Dec 2022 06:59:46 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1670597986; cv=none; d=google.com; s=arc-20160816; b=Pf4/vZy1mSbOaN+18nk++fZf5G5Y+MOoPXfYuLtvkOB+/x+zGZ4a2Q7xedcnqumm/I KU2FRnaKrk+XuZKamVi9vl3vOg6CkwO+S6QZKs/jCfPVrRgrWZx9MCoNKTGR1H8CJPiU gw+qBrRdTRDdX+B7l5aRwHCcrdRmOXLn97v0uMXwMTjwIOvGg1Hq7LQhnh+0Xhh5SZlc VFwqQu+9tIIp+6tEy13qvI+oz08UiwTba7w0mVCR7GZV6KHd8hXu7PSsUOU0ZU/rJ/mI qQI0izTPBvil3NlRJ98Bg6oLIcG7AlaC4Jr/VGB1xTaToYcapzLkEztm82vrg+n9AdBG j2Eg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=ROtOQl0iT4Ua6doSdkwJJ3Gv1mhqQe8GXYrZrg3slxM=; b=q5Z8bOJW6CKgJWsKPYd2FjDev5KSW39HDEu7a/JS2ciHYGjbiLwimpyu2rsw5zfHvl hrsbqZjw0f29HTJVRasaSq9kq1t7lPc4oBJ9q3AOvkH+LyKt53TFPltVZ8AgnpY8peBY RmwaIfUZk+3QL3pJNr0y/jGa9bpuCRU1Jsp+XCDmyawI8S27K6t7DbC4uBJ1HBmLXIzC I5AWzJArSSUHtcEii7DVbEYM+Yq2FhSVLBTVTh3Y3aA2a+SLNq3kmWFyXHIrj3GqUc/C 5S70893t56KdNZTzGQVTKXgVyClzBxZEp4WlNIpXE8nfCutWmyTMF9cVRNDT4iEwWj2e cxHA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linbit-com.20210112.gappssmtp.com header.s=20210112 header.b=ApPRBy01; 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 Received: from out1.vger.email (out1.vger.email. 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[82.218.28.181]) by smtp.gmail.com with ESMTPSA id bd21-20020a056402207500b0046bb7503d9asm728424edb.24.2022.12.09.06.53.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Dec 2022 06:53:35 -0800 (PST) From: =?utf-8?q?Christoph_B=C3=B6hmwalder?= To: Jens Axboe Cc: drbd-dev@lists.linbit.com, linux-kernel@vger.kernel.org, Lars Ellenberg , Philipp Reisner , linux-block@vger.kernel.org, =?utf-8?q?Christoph_B=C3=B6hmwalder?= , Joel Colledge Subject: [PATCH 5/8] drbd: remove macros using require_context Date: Fri, 9 Dec 2022 15:53:24 +0100 Message-Id: <20221209145327.2272271-6-christoph.boehmwalder@linbit.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221209145327.2272271-1-christoph.boehmwalder@linbit.com> References: <20221209145327.2272271-1-christoph.boehmwalder@linbit.com> MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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?1751748953579506449?= X-GMAIL-MSGID: =?utf-8?q?1751748953579506449?= This require_context attribute originated in a proposed sparse patch by Philipp Reisner back in 2008. Johannes Berg had a different solution to a similar problem, and that patch "won" in the end; so the require_context thing never got merged. The whole history can be read at [0]. DRBD kept using these annotations anyway for a while. Nowadays, on a modern unmodified sparse, they obviously do nothing, and they are hardly used anymore anyway. So, just remove the definitions of these macros. [0] https://www.spinics.net/lists/linux-sparse/msg01150.html Signed-off-by: Christoph Böhmwalder Reviewed-by: Joel Colledge --- drivers/block/drbd/drbd_int.h | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index ae713338aa46..edce1f7ac2da 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -39,16 +39,6 @@ #include "drbd_protocol.h" #include "drbd_polymorph_printk.h" -#ifdef __CHECKER__ -# define __protected_by(x) __attribute__((require_context(x,1,999,"rdwr"))) -# define __protected_read_by(x) __attribute__((require_context(x,1,999,"read"))) -# define __protected_write_by(x) __attribute__((require_context(x,1,999,"write"))) -#else -# define __protected_by(x) -# define __protected_read_by(x) -# define __protected_write_by(x) -#endif - /* shared module parameters, defined in drbd_main.c */ #ifdef CONFIG_DRBD_FAULT_INJECTION extern int drbd_enable_faults; @@ -774,7 +764,7 @@ struct drbd_device { unsigned long flags; /* configured by drbdsetup */ - struct drbd_backing_dev *ldev __protected_by(local); + struct drbd_backing_dev *ldev; sector_t p_size; /* partner's disk size */ struct request_queue *rq_queue; From patchwork Fri Dec 9 14:53:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Christoph_B=C3=B6hmwalder?= X-Patchwork-Id: 31798 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:f944:0:0:0:0:0 with SMTP id q4csp822615wrr; Fri, 9 Dec 2022 06:57:31 -0800 (PST) X-Google-Smtp-Source: AA0mqf7MF26jhYCdYFAVGqdxVKa8Y8B8eP21vlb46Ec7oW/nbmgD/t1CAJnrA5MlekWly/49z8iC X-Received: by 2002:a17:90a:d244:b0:219:705c:7193 with SMTP id o4-20020a17090ad24400b00219705c7193mr6059864pjw.11.1670597850787; Fri, 09 Dec 2022 06:57:30 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1670597850; cv=none; d=google.com; s=arc-20160816; b=x5bMoxtb4zFHl5Tp+ZC50lbTS8RvKCnLonjczilHoO9X0XOQJXnMun9W6TQz0/wBAP NJwV7TzoXfmYsql8UsnkpP4xK8G9s/bSAX7vsNib+94jvcVQwIgezDMo/eYx+kdKlE/m hATNtquw8CdjhE3fE+2kI3IpdyPZa5R7bs9VSi3Yl19vbPrrO7xjbMUBMx23xBwaMPFC hpJyieIA/thie+a53pI/8xSrMl6viLDnejte5IpxcTCVNAzR7PPfTQ1aXYIjCytU2T3v 9G+5L3rTUnhuCyfHSv+yGHgvfkdzb1+kvwcLYk3kzXksxSH9dG8ptFzfb0w5ouQc+78h AFWw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=N1ZPBPraqcCSXLcbBqEiTH4593Z8hkjnTNKrVJO6nsc=; b=s96tt1kUucHWWIUThYPKdNAyYdMzh33ub8mSiPh5w6zP37lJuo7Qr67kzY9hSOaRbi 4GUajWTM+R+zJrbWEPXTw5iGlASh03Db79Z57FsUeaHMrPcX1/bhvroFO1p/AHpMWlVg /CectQ0UmL+pHTZjApa1dgvFXFbbbHtgRSZ2VhvMPQoqwqDiD5bqVDYD8jjZmJAToiR4 BFwTl1zxdGTi3nmYt+cBR2FYqUboz3/NUrBM2bhimU/sX9aV7JjGy6r7XLJXPHK5u3+W 4wHHDWj1fru5V6J6H1pp1MU87yTP2G239fu/CyGCOCjb1/FIbpahN3lSOlzHIG4X6pkB hOGA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linbit-com.20210112.gappssmtp.com header.s=20210112 header.b=cA94dZQe; 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 Received: from out1.vger.email (out1.vger.email. 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[82.218.28.181]) by smtp.gmail.com with ESMTPSA id bd21-20020a056402207500b0046bb7503d9asm728424edb.24.2022.12.09.06.53.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Dec 2022 06:53:36 -0800 (PST) From: =?utf-8?q?Christoph_B=C3=B6hmwalder?= To: Jens Axboe Cc: drbd-dev@lists.linbit.com, linux-kernel@vger.kernel.org, Lars Ellenberg , Philipp Reisner , linux-block@vger.kernel.org, =?utf-8?q?Christoph_B=C3=B6hmwalder?= , Joel Colledge Subject: [PATCH 6/8] MAINTAINERS: add drbd headers Date: Fri, 9 Dec 2022 15:53:25 +0100 Message-Id: <20221209145327.2272271-7-christoph.boehmwalder@linbit.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221209145327.2272271-1-christoph.boehmwalder@linbit.com> References: <20221209145327.2272271-1-christoph.boehmwalder@linbit.com> MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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?1751748811928181890?= X-GMAIL-MSGID: =?utf-8?q?1751748811928181890?= Signed-off-by: Christoph Böhmwalder Reviewed-by: Joel Colledge --- MAINTAINERS | 1 + 1 file changed, 1 insertion(+) diff --git a/MAINTAINERS b/MAINTAINERS index 595d59eec7ea..83b6f3a97cf6 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6349,6 +6349,7 @@ T: git git://git.linbit.com/linux-drbd.git T: git git://git.linbit.com/drbd-8.4.git F: Documentation/admin-guide/blockdev/ F: drivers/block/drbd/ +F: include/linux/drbd* F: lib/lru_cache.c DRIVER COMPONENT FRAMEWORK From patchwork Fri Dec 9 14:53:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Christoph_B=C3=B6hmwalder?= X-Patchwork-Id: 31797 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:f944:0:0:0:0:0 with SMTP id q4csp822108wrr; Fri, 9 Dec 2022 06:56:24 -0800 (PST) X-Google-Smtp-Source: AA0mqf5Bpv6flQb4c/r8+jx0cBaCvgaoF5u0xxGy3Rf3hxndZqRUE3dDI0gIza00GAiLSVx92iX6 X-Received: by 2002:aa7:96fc:0:b0:577:fdb8:e601 with SMTP id i28-20020aa796fc000000b00577fdb8e601mr2035038pfq.21.1670597784348; Fri, 09 Dec 2022 06:56:24 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1670597784; cv=none; d=google.com; s=arc-20160816; b=bRdeHdiHkhL19Okjcir2ZcH5urzr0avKfT9u9i9uno0OFE4Q9ho2RUJMsUWYm+Lk/D YWMjC7P9KPza6CafOLl4neWtpIPlbHoOJDJdsJiVUGLaghKXjwuoNf/ixy+Zfy4EXooq YlwqcLCkHGCwovIG/510/S8Fd7/E3eVQhiBk/Wy/qt9yXdpQCMoMsTzOgw5HSemA/F2J Kg0U01Pfypolr6wpu6riHUaubCE0Qv3HIe/l+S7QoBpv7/qU8yaHDKn7Ujd9O4Hy03kk i5zKkZhbjXUF6rvBYDiV7Ev3JKJmlZcSA1772Yn5Y/pTR1UeD8Hl/fBWrK+PMMIJgUct YB6Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=T5KT6Auu94HJGq65sn5VmhXW8yJRnWzEtldTHa29AT0=; b=fzNB+ZRDJVtQRa4pSfp6sGbuBcLiZK2iMCYxKxVyreg8VQ1CCc5h83WuNOCdaoajKa ufZdWra5bqkW/LSRn4WqP9GD3Vb6SWFDoJ5nROzVYjmtHSYXEWWhdJ5vhkI1RjGsIDfs Ho52hM6o541WNi6eMPgiczxaRfPdOjNO9v72SuGSWShr0luAVI71FbfY45d3wNwSahQt W8BsfQYbw3q0B5uKHBm2BuYx5VnBt/AP8Wi0t2ZrOTjKefmkHOojFMkWpVSFE21zbkJz i6+Pju3GXztzahiOfZGCFpxnLBwMSxDRpR+fgUZRD+6j6qF+Ykvopd2ncIZl3TxUH9gu DHSQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linbit-com.20210112.gappssmtp.com header.s=20210112 header.b=qH3VWd11; 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 Received: from out1.vger.email (out1.vger.email. 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[82.218.28.181]) by smtp.gmail.com with ESMTPSA id bd21-20020a056402207500b0046bb7503d9asm728424edb.24.2022.12.09.06.53.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Dec 2022 06:53:36 -0800 (PST) From: =?utf-8?q?Christoph_B=C3=B6hmwalder?= To: Jens Axboe Cc: drbd-dev@lists.linbit.com, linux-kernel@vger.kernel.org, Lars Ellenberg , Philipp Reisner , linux-block@vger.kernel.org, =?utf-8?q?Christoph_B=C3=B6hmwalder?= Subject: [PATCH 7/8] drbd: interval tree: make removing an "empty" interval a no-op Date: Fri, 9 Dec 2022 15:53:26 +0100 Message-Id: <20221209145327.2272271-8-christoph.boehmwalder@linbit.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221209145327.2272271-1-christoph.boehmwalder@linbit.com> References: <20221209145327.2272271-1-christoph.boehmwalder@linbit.com> MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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?1751748742521144361?= X-GMAIL-MSGID: =?utf-8?q?1751748742521144361?= From: Lars Ellenberg Trying to remove an "empty" (just initialized, or "cleared") interval from the tree, this results in an endless loop. As we typically protect the tree with a spinlock_irq, the result is a hung system. Be nice to error cleanup code paths, ignore removal of empty intervals. Signed-off-by: Lars Ellenberg Signed-off-by: Christoph Böhmwalder --- drivers/block/drbd/drbd_interval.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/block/drbd/drbd_interval.c b/drivers/block/drbd/drbd_interval.c index 5024ffd6143d..b6aaf0d4d85b 100644 --- a/drivers/block/drbd/drbd_interval.c +++ b/drivers/block/drbd/drbd_interval.c @@ -95,6 +95,10 @@ drbd_contains_interval(struct rb_root *root, sector_t sector, void drbd_remove_interval(struct rb_root *root, struct drbd_interval *this) { + /* avoid endless loop */ + if (drbd_interval_empty(this)) + return; + rb_erase_augmented(&this->rb, root, &augment_callbacks); } From patchwork Fri Dec 9 14:53:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Christoph_B=C3=B6hmwalder?= X-Patchwork-Id: 31796 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:f944:0:0:0:0:0 with SMTP id q4csp822107wrr; Fri, 9 Dec 2022 06:56:24 -0800 (PST) X-Google-Smtp-Source: AA0mqf5uVuW9NDQ53N6ddBtDBQq9jSX5rSxwiPbjyr94xKdxoPebd3M28oGwGrg9E2O1/CTYdF8a X-Received: by 2002:a17:90a:77cc:b0:218:b349:6b97 with SMTP id e12-20020a17090a77cc00b00218b3496b97mr6048584pjs.10.1670597784354; Fri, 09 Dec 2022 06:56:24 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1670597784; cv=none; d=google.com; s=arc-20160816; b=sV9payRalT0OXEleLr507ojXg9RIg7zgkyFbBx9HhLZELUAVA1/V/xuI0Xnw4pNSn9 lIRytelxfqKB4KJ57F2uIWeHrBCPO4akKOUDd47nQRjBD6XzU6+V1W+GHbIFq+qtix9k AQsTRiTaEWVa9qvfdXf9QTW1bVGuyn/GTHuDNvvUm5Ao7X2xiIgLjTzYo3zGp5V4SpmF B+TvTZeTj+R5CG6mnCzzEiTaUUZvJeLNPd7tvn1DCbEFlgYGaL0gclnTDIoNCeNv/WJP nRCNOMAXvSwuYq+pEoSgw5tD47qSunmLpzbA0WSYJWWednB29eubLnEZJM3eG+TSMdfV xRsQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=w8l6YI6ll5WTtemsFOxZHnG0tRV3sgRpFSwrNSjhQUI=; b=XLlUHP2gqkgLpl3xOOOKie7ml4+L3a/xBRHoGmFDISSHGPG8N5xAU3mWfNL2M6QbrC 4Es0nsigTkF/5dAgmMLAbipmoEUKo9HmDUrQy8WcIdBrOSOjX7y34uruHrrWWo3CMBLm wSwC5OLCnTosrlM64IxHHPuaqlv55mDmqKn1wcun9881PeVUyhu0kayXwHsIfllS+zkg V7i/ydueU45+jSXfNCN7uZ9idtmyx9ZDaIvsyZfwGYWVtsFGBcJxXIN/7B+fKunHKu5F 5I49W1iYnmFEPvM/Fq7du+C94IqEDKge3+0RXWop2AEjWWxTRvSKK5+cceETleI5sLPK c/FQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linbit-com.20210112.gappssmtp.com header.s=20210112 header.b=QFl7VoOt; 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 Received: from out1.vger.email (out1.vger.email. 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[82.218.28.181]) by smtp.gmail.com with ESMTPSA id bd21-20020a056402207500b0046bb7503d9asm728424edb.24.2022.12.09.06.53.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Dec 2022 06:53:37 -0800 (PST) From: =?utf-8?q?Christoph_B=C3=B6hmwalder?= To: Jens Axboe Cc: drbd-dev@lists.linbit.com, linux-kernel@vger.kernel.org, Lars Ellenberg , Philipp Reisner , linux-block@vger.kernel.org, Andreas Gruenbacher , =?utf-8?q?Christoph_B=C3=B6hmwalde?= =?utf-8?q?r?= Subject: [PATCH 8/8] drbd: drbd_insert_interval(): Clarify comment Date: Fri, 9 Dec 2022 15:53:27 +0100 Message-Id: <20221209145327.2272271-9-christoph.boehmwalder@linbit.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221209145327.2272271-1-christoph.boehmwalder@linbit.com> References: <20221209145327.2272271-1-christoph.boehmwalder@linbit.com> MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,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?1751748742453886389?= X-GMAIL-MSGID: =?utf-8?q?1751748742453886389?= From: Andreas Gruenbacher Signed-off-by: Andreas Gruenbacher Signed-off-by: Christoph Böhmwalder --- drivers/block/drbd/drbd_interval.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/drbd/drbd_interval.c b/drivers/block/drbd/drbd_interval.c index b6aaf0d4d85b..873beda6de24 100644 --- a/drivers/block/drbd/drbd_interval.c +++ b/drivers/block/drbd/drbd_interval.c @@ -58,7 +58,7 @@ drbd_insert_interval(struct rb_root *root, struct drbd_interval *this) * drbd_contains_interval - check if a tree contains a given interval * @root: red black tree root * @sector: start sector of @interval - * @interval: may not be a valid pointer + * @interval: may be an invalid pointer * * Returns if the tree contains the node @interval with start sector @start. * Does not dereference @interval until @interval is known to be a valid object