From patchwork Tue Nov 14 21:40:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13456001 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 374EFC4332F for ; Tue, 14 Nov 2023 21:41:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234072AbjKNVly (ORCPT ); Tue, 14 Nov 2023 16:41:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43378 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234049AbjKNVlv (ORCPT ); Tue, 14 Nov 2023 16:41:51 -0500 Received: from mail-pl1-f174.google.com (mail-pl1-f174.google.com [209.85.214.174]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ABCEAD2; Tue, 14 Nov 2023 13:41:48 -0800 (PST) Received: by mail-pl1-f174.google.com with SMTP id d9443c01a7336-1cc3542e328so46247045ad.1; Tue, 14 Nov 2023 13:41:48 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699998108; x=1700602908; 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=/FFQa2e9BQic5MUNwTejV3XIteTNLmmrUor8s5RN+Kc=; b=PJ9A/xw9E84o2t+UDM/OB/dRbe0IM/G8S44VaAcVUlVXRsSI8TWA6vL8WLhRhQS6l5 A1kkESu4F3DVmzQYk0zRGnW58wrs6j6ZRc6ZoyBe/M2sRfUAMmcqLv4cc5VOwRmAKbRW oUj4gZ0xNM3GXAjsGyEQq92Bd63MEvcixlKUKMPGmoi3sFsjVHWRLmM+TuM/0URQ+Lkx t/B3vJYev9dqv9SSSB0lNtW5j2Lsx66OIUDVfYTUYhjjUniYw7YRQjJnia2bZlEEUAYT CJlSHHEaXzFuPZyBAx8s2y/0fOQ7bXW1CnSJ2sL2svnWHQfYem3tVf2WxV4eLOmoEYeM 4Lzw== X-Gm-Message-State: AOJu0Yz4K8MZw66aKV/zc0CL9dDJ0wHVHoUpRQPuEHwEet1PvxZEKuxh yf+qOVKo1AzyVf7GplBN++w= X-Google-Smtp-Source: AGHT+IER3ePTg/BeDrmersjmPt4kOAzVkMa6+a3RMV7Ao3IF71rzyhh2UkAIoi7BlrCvPobT9XK4pA== X-Received: by 2002:a17:902:7241:b0:1cc:76c4:5144 with SMTP id c1-20020a170902724100b001cc76c45144mr3184479pll.12.1699998108060; Tue, 14 Nov 2023 13:41:48 -0800 (PST) Received: from bvanassche-linux.mtv.corp.google.com ([2620:0:1000:8411:2278:ad72:cefb:4d49]) by smtp.gmail.com with ESMTPSA id o16-20020a170902d4d000b001c3267ae317sm6133926plg.165.2023.11.14.13.41.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Nov 2023 13:41:46 -0800 (PST) From: Bart Van Assche To: "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Daejun Park , Kanchan Joshi , Bart Van Assche , Jan Kara , Christian Brauner , Jaegeuk Kim , Chao Yu , Alexander Viro Subject: [PATCH v4 01/15] fs: Rename the kernel-internal data lifetime constants Date: Tue, 14 Nov 2023 13:40:56 -0800 Message-ID: <20231114214132.1486867-2-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.rc0.421.g78406f8d94-goog In-Reply-To: <20231114214132.1486867-1-bvanassche@acm.org> References: <20231114214132.1486867-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Prepare for supporting more data lifetimes by changing data lifetime names into numeric constants. Cc: Kanchan Joshi Cc: Jan Kara Cc: Christoph Hellwig Cc: Christian Brauner Suggested-by: Kanchan Joshi Signed-off-by: Bart Van Assche Reviewed-by: Kanchan Joshi --- fs/f2fs/segment.c | 4 ++-- fs/inode.c | 2 +- include/linux/fs.h | 12 ++++++------ 3 files changed, 9 insertions(+), 9 deletions(-) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 727d016318f9..098a574d8d84 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -3281,9 +3281,9 @@ int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range) int f2fs_rw_hint_to_seg_type(enum rw_hint hint) { switch (hint) { - case WRITE_LIFE_SHORT: + case WRITE_LIFE_2: return CURSEG_HOT_DATA; - case WRITE_LIFE_EXTREME: + case WRITE_LIFE_5: return CURSEG_COLD_DATA; default: return CURSEG_WARM_DATA; diff --git a/fs/inode.c b/fs/inode.c index edcd8a61975f..7965d5e07012 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -175,7 +175,7 @@ int inode_init_always(struct super_block *sb, struct inode *inode) i_gid_write(inode, 0); atomic_set(&inode->i_writecount, 0); inode->i_size = 0; - inode->i_write_hint = WRITE_LIFE_NOT_SET; + inode->i_write_hint = WRITE_LIFE_0; inode->i_blocks = 0; inode->i_bytes = 0; inode->i_generation = 0; diff --git a/include/linux/fs.h b/include/linux/fs.h index 98b7a7a8c42e..59f9de9df0fe 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -314,12 +314,12 @@ struct readahead_control; * Stored in struct inode as u8. */ enum rw_hint { - WRITE_LIFE_NOT_SET = 0, - WRITE_LIFE_NONE = RWH_WRITE_LIFE_NONE, - WRITE_LIFE_SHORT = RWH_WRITE_LIFE_SHORT, - WRITE_LIFE_MEDIUM = RWH_WRITE_LIFE_MEDIUM, - WRITE_LIFE_LONG = RWH_WRITE_LIFE_LONG, - WRITE_LIFE_EXTREME = RWH_WRITE_LIFE_EXTREME, + WRITE_LIFE_0 = 0, + WRITE_LIFE_1 = RWH_WRITE_LIFE_NONE, + WRITE_LIFE_2 = RWH_WRITE_LIFE_SHORT, + WRITE_LIFE_3 = RWH_WRITE_LIFE_MEDIUM, + WRITE_LIFE_4 = RWH_WRITE_LIFE_LONG, + WRITE_LIFE_5 = RWH_WRITE_LIFE_EXTREME, }; /* Match RWF_* bits to IOCB bits */ From patchwork Tue Nov 14 21:40:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13456003 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 E0421C4167B for ; Tue, 14 Nov 2023 21:42:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234094AbjKNVmO (ORCPT ); Tue, 14 Nov 2023 16:42:14 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56398 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234092AbjKNVmM (ORCPT ); Tue, 14 Nov 2023 16:42:12 -0500 Received: from mail-pl1-f178.google.com (mail-pl1-f178.google.com [209.85.214.178]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4DF49D5; Tue, 14 Nov 2023 13:42:05 -0800 (PST) Received: by mail-pl1-f178.google.com with SMTP id d9443c01a7336-1cc3c51f830so47310305ad.1; Tue, 14 Nov 2023 13:42:05 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699998125; x=1700602925; 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=qNyo/5GtfbZEm3qkTN5J6CCReaJlJFArmEnNenmgc8I=; b=vLyI7K0qXkZLhsIxpJahj2pBWkIrMHKTNKA/bSZ5dhHX8TKXjtv52HPYqemWOAMOmk NjOCZJfnTH0KVgkCj4m4X1gIQIH2bQwtGDEajGuoTiztyKn111iCGD6Svp1JU8m1Fpyo 59+XJjaLHFDZeDffJiZn3bwy3AdfYvMbVYBdNd4MSbru9HDSf6dgfKhroK4ubU/ecZGX rpkD6BmE11eR2uCw55OC19qxoHC51D1b8CAynRBbsSw2TleRY5IHmig52eyRW5uEQNwb Vn6/YS6reFGb0wIfPy0tv+ix8ZRTL8I149N0PF7Y5nT5ILso8PVc2+QkDLGwmZKVyx+X tgBQ== X-Gm-Message-State: AOJu0YzECy6kIn7KS5hoC567bvoBvAZHQftAf1C5d4gP23Pr4cEpCGrl bcaN1dKYhdJJ9lHcQCcwxxJhEzgewuRzrA== X-Google-Smtp-Source: AGHT+IFZMWVmvT1GgsNdUHNh34MuHVJFEJpVpgN7PNROe8hk5e76XAse98jqIWZBy28ErTQQ6ejmoA== X-Received: by 2002:a17:902:ea10:b0:1cc:51ca:52e5 with SMTP id s16-20020a170902ea1000b001cc51ca52e5mr3882941plg.44.1699998124694; Tue, 14 Nov 2023 13:42:04 -0800 (PST) Received: from bvanassche-linux.mtv.corp.google.com ([2620:0:1000:8411:2278:ad72:cefb:4d49]) by smtp.gmail.com with ESMTPSA id o16-20020a170902d4d000b001c3267ae317sm6133926plg.165.2023.11.14.13.42.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Nov 2023 13:42:04 -0800 (PST) From: Bart Van Assche To: "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Daejun Park , Kanchan Joshi , Bart Van Assche , Jan Kara , Christian Brauner , Jaegeuk Kim , Chao Yu , Jeff Layton , Chuck Lever , Alexander Viro Subject: [PATCH v4 02/15] fs: Move enum rw_hint into a new header file Date: Tue, 14 Nov 2023 13:40:57 -0800 Message-ID: <20231114214132.1486867-3-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.rc0.421.g78406f8d94-goog In-Reply-To: <20231114214132.1486867-1-bvanassche@acm.org> References: <20231114214132.1486867-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Move enum rw_hint into a new header file to prepare for using this data type in the block layer. Add the attribute __packed to reduce the space occupied by instances of this data type from four bytes to one byte. Change the data type of i_write_hint from u8 into enum rw_hint. Change the RWH_* constants into literal constants to prevent that would have to be included. Cc: Jan Kara Cc: Christoph Hellwig Cc: Christian Brauner Signed-off-by: Bart Van Assche --- fs/f2fs/f2fs.h | 1 + fs/fcntl.c | 1 + fs/inode.c | 1 + include/linux/fs.h | 16 ++-------------- include/linux/rw_hint.h | 20 ++++++++++++++++++++ 5 files changed, 25 insertions(+), 14 deletions(-) create mode 100644 include/linux/rw_hint.h diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 9043cedfa12b..8e0c66a6b097 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -24,6 +24,7 @@ #include #include #include +#include #include #include diff --git a/fs/fcntl.c b/fs/fcntl.c index c80a6acad742..880828e14420 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -27,6 +27,7 @@ #include #include #include +#include #include #include diff --git a/fs/inode.c b/fs/inode.c index 7965d5e07012..e9ae2199d67b 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include "internal.h" diff --git a/include/linux/fs.h b/include/linux/fs.h index 59f9de9df0fe..a08014b68d6e 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -43,6 +43,7 @@ #include #include #include +#include #include #include @@ -309,19 +310,6 @@ struct address_space; struct writeback_control; struct readahead_control; -/* - * Write life time hint values. - * Stored in struct inode as u8. - */ -enum rw_hint { - WRITE_LIFE_0 = 0, - WRITE_LIFE_1 = RWH_WRITE_LIFE_NONE, - WRITE_LIFE_2 = RWH_WRITE_LIFE_SHORT, - WRITE_LIFE_3 = RWH_WRITE_LIFE_MEDIUM, - WRITE_LIFE_4 = RWH_WRITE_LIFE_LONG, - WRITE_LIFE_5 = RWH_WRITE_LIFE_EXTREME, -}; - /* Match RWF_* bits to IOCB bits */ #define IOCB_HIPRI (__force int) RWF_HIPRI #define IOCB_DSYNC (__force int) RWF_DSYNC @@ -677,7 +665,7 @@ struct inode { spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ unsigned short i_bytes; u8 i_blkbits; - u8 i_write_hint; + enum rw_hint i_write_hint; blkcnt_t i_blocks; #ifdef __NEED_I_SIZE_ORDERED diff --git a/include/linux/rw_hint.h b/include/linux/rw_hint.h new file mode 100644 index 000000000000..f172efb09655 --- /dev/null +++ b/include/linux/rw_hint.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_RW_HINT_H +#define _LINUX_RW_HINT_H + +#include +#include + +/* Block storage write lifetime hint values. */ +enum rw_hint { + WRITE_LIFE_0 = 0, /* RWH_WRITE_LIFE_NOT_SET */ + WRITE_LIFE_1 = 1, /* RWH_WRITE_LIFE_NONE */ + WRITE_LIFE_2 = 2, /* RWH_WRITE_LIFE_SHORT */ + WRITE_LIFE_3 = 3, /* RWH_WRITE_LIFE_MEDIUM */ + WRITE_LIFE_4 = 4, /* RWH_WRITE_LIFE_LONG */ + WRITE_LIFE_5 = 5, /* RWH_WRITE_LIFE_EXTREME */ +} __packed; + +static_assert(sizeof(enum rw_hint) == 1); + +#endif /* _LINUX_RW_HINT_H */ From patchwork Tue Nov 14 21:40:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13456002 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 C6250C4332F for ; Tue, 14 Nov 2023 21:42:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234093AbjKNVmN (ORCPT ); Tue, 14 Nov 2023 16:42:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56404 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234084AbjKNVmM (ORCPT ); Tue, 14 Nov 2023 16:42:12 -0500 Received: from mail-pl1-f178.google.com (mail-pl1-f178.google.com [209.85.214.178]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0D6A1D6; 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Tue, 14 Nov 2023 13:42:06 -0800 (PST) Received: from bvanassche-linux.mtv.corp.google.com ([2620:0:1000:8411:2278:ad72:cefb:4d49]) by smtp.gmail.com with ESMTPSA id o16-20020a170902d4d000b001c3267ae317sm6133926plg.165.2023.11.14.13.42.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Nov 2023 13:42:05 -0800 (PST) From: Bart Van Assche To: "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Daejun Park , Kanchan Joshi , Bart Van Assche , Damien Le Moal Subject: [PATCH v4 03/15] block: Restore data lifetime support in struct bio and struct request Date: Tue, 14 Nov 2023 13:40:58 -0800 Message-ID: <20231114214132.1486867-4-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.rc0.421.g78406f8d94-goog In-Reply-To: <20231114214132.1486867-1-bvanassche@acm.org> References: <20231114214132.1486867-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Provide a mechanism for filesystems to pass data lifetime information to block drivers. Data lifetime information can be used by block devices with append/erase storage technology (NAND flash) to reduce garbage collection activity. This patch restores a subset of the functionality that was removed by commit c75e707fe1aa ("block: remove the per-bio/request write hint"). Cc: Christoph Hellwig Cc: Damien Le Moal Signed-off-by: Bart Van Assche --- block/bio.c | 2 ++ block/blk-crypto-fallback.c | 1 + block/blk-merge.c | 6 ++++++ block/blk-mq.c | 1 + block/bounce.c | 1 + include/linux/blk-mq.h | 2 ++ include/linux/blk_types.h | 2 ++ 7 files changed, 15 insertions(+) diff --git a/block/bio.c b/block/bio.c index 816d412c06e9..1a3733635079 100644 --- a/block/bio.c +++ b/block/bio.c @@ -251,6 +251,7 @@ void bio_init(struct bio *bio, struct block_device *bdev, struct bio_vec *table, bio->bi_opf = opf; bio->bi_flags = 0; bio->bi_ioprio = 0; + bio->bi_lifetime = 0; bio->bi_status = 0; bio->bi_iter.bi_sector = 0; bio->bi_iter.bi_size = 0; @@ -813,6 +814,7 @@ static int __bio_clone(struct bio *bio, struct bio *bio_src, gfp_t gfp) { bio_set_flag(bio, BIO_CLONED); bio->bi_ioprio = bio_src->bi_ioprio; + bio->bi_lifetime = bio_src->bi_lifetime; bio->bi_iter = bio_src->bi_iter; if (bio->bi_bdev) { diff --git a/block/blk-crypto-fallback.c b/block/blk-crypto-fallback.c index e6468eab2681..e25a6d551594 100644 --- a/block/blk-crypto-fallback.c +++ b/block/blk-crypto-fallback.c @@ -172,6 +172,7 @@ static struct bio *blk_crypto_fallback_clone_bio(struct bio *bio_src) if (bio_flagged(bio_src, BIO_REMAPPED)) bio_set_flag(bio, BIO_REMAPPED); bio->bi_ioprio = bio_src->bi_ioprio; + bio->bi_lifetime = bio_src->bi_lifetime; bio->bi_iter.bi_sector = bio_src->bi_iter.bi_sector; bio->bi_iter.bi_size = bio_src->bi_iter.bi_size; diff --git a/block/blk-merge.c b/block/blk-merge.c index 65e75efa9bd3..62718cc871bd 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -814,6 +814,9 @@ static struct request *attempt_merge(struct request_queue *q, if (rq_data_dir(req) != rq_data_dir(next)) return NULL; + if (req->lifetime != next->lifetime) + return NULL; + if (req->ioprio != next->ioprio) return NULL; @@ -941,6 +944,9 @@ bool blk_rq_merge_ok(struct request *rq, struct bio *bio) if (!bio_crypt_rq_ctx_compatible(rq, bio)) return false; + if (rq->lifetime != bio->bi_lifetime) + return NULL; + if (rq->ioprio != bio_prio(bio)) return false; diff --git a/block/blk-mq.c b/block/blk-mq.c index a815403f375c..10540a3b3c49 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -3148,6 +3148,7 @@ int blk_rq_prep_clone(struct request *rq, struct request *rq_src, } rq->nr_phys_segments = rq_src->nr_phys_segments; rq->ioprio = rq_src->ioprio; + rq->lifetime = rq_src->lifetime; if (rq->bio && blk_crypto_rq_bio_prep(rq, rq->bio, gfp_mask) < 0) goto free_and_out; diff --git a/block/bounce.c b/block/bounce.c index 7cfcb242f9a1..b03e4944ace8 100644 --- a/block/bounce.c +++ b/block/bounce.c @@ -169,6 +169,7 @@ static struct bio *bounce_clone_bio(struct bio *bio_src) if (bio_flagged(bio_src, BIO_REMAPPED)) bio_set_flag(bio, BIO_REMAPPED); bio->bi_ioprio = bio_src->bi_ioprio; + bio->bi_lifetime = bio_src->bi_lifetime; bio->bi_iter.bi_sector = bio_src->bi_iter.bi_sector; bio->bi_iter.bi_size = bio_src->bi_iter.bi_size; diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 1ab3081c82ed..1afd731432fe 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -136,6 +136,7 @@ struct request { #endif unsigned short ioprio; + enum rw_hint lifetime; enum mq_rq_state state; atomic_t ref; @@ -957,6 +958,7 @@ static inline void blk_rq_bio_prep(struct request *rq, struct bio *bio, rq->__data_len = bio->bi_iter.bi_size; rq->bio = rq->biotail = bio; rq->ioprio = bio_prio(bio); + rq->lifetime = bio->bi_lifetime; } void blk_mq_hctx_set_fq_lock_class(struct blk_mq_hw_ctx *hctx, diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index d5c5e59ddbd2..5e21f44141fb 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -10,6 +10,7 @@ #include #include #include +#include struct bio_set; struct bio; @@ -269,6 +270,7 @@ struct bio { */ unsigned short bi_flags; /* BIO_* below */ unsigned short bi_ioprio; + enum rw_hint bi_lifetime; /* data lifetime */ blk_status_t bi_status; atomic_t __bi_remaining; From patchwork Tue Nov 14 21:40:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13456004 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 6E88BC4167D for ; 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Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Daejun Park , Kanchan Joshi , Bart Van Assche , Jan Kara , Christian Brauner , Alexander Viro Subject: [PATCH v4 04/15] fs: Restore write hint support Date: Tue, 14 Nov 2023 13:40:59 -0800 Message-ID: <20231114214132.1486867-5-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.rc0.421.g78406f8d94-goog In-Reply-To: <20231114214132.1486867-1-bvanassche@acm.org> References: <20231114214132.1486867-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Initialize the bio lifetime to the data lifetime information that is available in struct inode. This patch reverts a small subset of commit c75e707fe1aa ("block: remove the per-bio/request write hint"). Cc: Jan Kara Cc: Christoph Hellwig Cc: Christian Brauner Signed-off-by: Bart Van Assche --- block/fops.c | 3 +++ fs/iomap/buffered-io.c | 2 ++ fs/iomap/direct-io.c | 1 + fs/mpage.c | 1 + 4 files changed, 7 insertions(+) diff --git a/block/fops.c b/block/fops.c index 0abaac705daf..059c098c7a58 100644 --- a/block/fops.c +++ b/block/fops.c @@ -74,6 +74,7 @@ static ssize_t __blkdev_direct_IO_simple(struct kiocb *iocb, } bio.bi_iter.bi_sector = pos >> SECTOR_SHIFT; bio.bi_ioprio = iocb->ki_ioprio; + bio.bi_lifetime = iocb->ki_filp->f_inode->i_write_hint; ret = bio_iov_iter_get_pages(&bio, iter); if (unlikely(ret)) @@ -206,6 +207,7 @@ static ssize_t __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, bio->bi_private = dio; bio->bi_end_io = blkdev_bio_end_io; bio->bi_ioprio = iocb->ki_ioprio; + bio->bi_lifetime = iocb->ki_filp->f_inode->i_write_hint; ret = bio_iov_iter_get_pages(bio, iter); if (unlikely(ret)) { @@ -323,6 +325,7 @@ static ssize_t __blkdev_direct_IO_async(struct kiocb *iocb, bio->bi_iter.bi_sector = pos >> SECTOR_SHIFT; bio->bi_end_io = blkdev_bio_end_io_async; bio->bi_ioprio = iocb->ki_ioprio; + bio->bi_lifetime = iocb->ki_filp->f_inode->i_write_hint; if (iov_iter_is_bvec(iter)) { /* diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index f72df2babe56..0a430d85dec4 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -1677,6 +1677,7 @@ iomap_alloc_ioend(struct inode *inode, struct iomap_writepage_ctx *wpc, REQ_OP_WRITE | wbc_to_write_flags(wbc), GFP_NOFS, &iomap_ioend_bioset); bio->bi_iter.bi_sector = sector; + bio->bi_lifetime = inode->i_write_hint; wbc_init_bio(wbc, bio); ioend = container_of(bio, struct iomap_ioend, io_inline_bio); @@ -1707,6 +1708,7 @@ iomap_chain_bio(struct bio *prev) new = bio_alloc(prev->bi_bdev, BIO_MAX_VECS, prev->bi_opf, GFP_NOFS); bio_clone_blkg_association(new, prev); new->bi_iter.bi_sector = bio_end_sector(prev); + new->bi_lifetime = prev->bi_lifetime; bio_chain(prev, new); bio_get(prev); /* for iomap_finish_ioend */ diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c index bcd3f8cf5ea4..df095b9700a7 100644 --- a/fs/iomap/direct-io.c +++ b/fs/iomap/direct-io.c @@ -381,6 +381,7 @@ static loff_t iomap_dio_bio_iter(const struct iomap_iter *iter, GFP_KERNEL); bio->bi_iter.bi_sector = iomap_sector(iomap, pos); bio->bi_ioprio = dio->iocb->ki_ioprio; + bio->bi_lifetime = dio->iocb->ki_filp->f_inode->i_write_hint; bio->bi_private = dio; bio->bi_end_io = iomap_dio_bio_end_io; diff --git a/fs/mpage.c b/fs/mpage.c index ffb064ed9d04..0eea809a6d46 100644 --- a/fs/mpage.c +++ b/fs/mpage.c @@ -611,6 +611,7 @@ static int __mpage_writepage(struct folio *folio, struct writeback_control *wbc, GFP_NOFS); bio->bi_iter.bi_sector = blocks[0] << (blkbits - 9); wbc_init_bio(wbc, bio); + bio->bi_lifetime = inode->i_write_hint; } /* From patchwork Tue Nov 14 21:41:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13456005 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 67FC1C4332F for ; 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Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Daejun Park , Kanchan Joshi , Bart Van Assche , Jaegeuk Kim , Avri Altman , Bean Huo , Chao Yu , Jonathan Corbet Subject: [PATCH v4 05/15] fs/f2fs: Restore data lifetime support Date: Tue, 14 Nov 2023 13:41:00 -0800 Message-ID: <20231114214132.1486867-6-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.rc0.421.g78406f8d94-goog In-Reply-To: <20231114214132.1486867-1-bvanassche@acm.org> References: <20231114214132.1486867-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Restore support for the whint_mode mount option that was removed by commit 930e2607638d ("f2fs: remove obsolete whint_mode"). Additionally, restore the bio->bi_lifetime assignment in __bio_alloc() that was removed by commit c75e707fe1aa ("block: remove the per-bio/request write hint"). Use the new names for data lifetimes (WRITE_LIFE_). Cc: Jaegeuk Kim Cc: Avri Altman Cc: Bean Huo Cc: Daejun Park Cc: Chao Yu Signed-off-by: Bart Van Assche --- Documentation/filesystems/f2fs.rst | 70 ++++++++++++++++++++++ fs/f2fs/data.c | 2 + fs/f2fs/f2fs.h | 9 +++ fs/f2fs/segment.c | 95 ++++++++++++++++++++++++++++++ fs/f2fs/super.c | 32 +++++++++- 5 files changed, 207 insertions(+), 1 deletion(-) diff --git a/Documentation/filesystems/f2fs.rst b/Documentation/filesystems/f2fs.rst index d32c6209685d..11fde8bcb3b6 100644 --- a/Documentation/filesystems/f2fs.rst +++ b/Documentation/filesystems/f2fs.rst @@ -242,6 +242,12 @@ offgrpjquota Turn off group journalled quota. offprjjquota Turn off project journalled quota. quota Enable plain user disk quota accounting. noquota Disable all plain disk quota option. +whint_mode=%s Control which write hints are passed down to block + layer. This supports "off", "user-based", and + "fs-based". In "off" mode (default), f2fs does not pass + down hints. In "user-based" mode, f2fs tries to pass + down hints given by users. And in "fs-based" mode, f2fs + passes down hints with its policy. alloc_mode=%s Adjust block allocation policy, which supports "reuse" and "default". fsync_mode=%s Control the policy of fsync. Currently supports "posix", @@ -776,6 +782,70 @@ In order to identify whether the data in the victim segment are valid or not, F2FS manages a bitmap. Each bit represents the validity of a block, and the bitmap is composed of a bit stream covering whole blocks in main area. +Write-hint Policy +----------------- + +1) whint_mode=off. F2FS only passes down WRITE_LIFE_0. + +2) whint_mode=user-based. F2FS tries to pass down hints given by +users. + +===================== ======================== =================== +User F2FS Block +===================== ======================== =================== +N/A META WRITE_LIFE_0 +N/A HOT_NODE " +N/A WARM_NODE " +N/A COLD_NODE " +ioctl(COLD) COLD_DATA WRITE_LIFE_5 +extension list " " + +-- buffered io +WRITE_LIFE_5 COLD_DATA WRITE_LIFE_5 +WRITE_LIFE_2 HOT_DATA WRITE_LIFE_2 +WRITE_LIFE_0 WARM_DATA WRITE_LIFE_0 +WRITE_LIFE_1 " " +WRITE_LIFE_3 " " +WRITE_LIFE_4 " " + +-- direct io +WRITE_LIFE_5 COLD_DATA WRITE_LIFE_5 +WRITE_LIFE_2 HOT_DATA WRITE_LIFE_2 +WRITE_LIFE_0 WARM_DATA WRITE_LIFE_0 +WRITE_LIFE_1 " WRITE_LIFE_1 +WRITE_LIFE_3 " WRITE_LIFE_3 +WRITE_LIFE_4 " WRITE_LIFE_4 +===================== ======================== =================== + +3) whint_mode=fs-based. F2FS passes down hints with its policy. + +===================== ======================== =================== +User F2FS Block +===================== ======================== =================== +N/A META WRITE_LIFE_3; +N/A HOT_NODE WRITE_LIFE_0 +N/A WARM_NODE " +N/A COLD_NODE WRITE_LIFE_1 +ioctl(COLD) COLD_DATA WRITE_LIFE_5 +extension list " " + +-- buffered io +WRITE_LIFE_5 COLD_DATA WRITE_LIFE_5 +WRITE_LIFE_2 HOT_DATA WRITE_LIFE_2 +WRITE_LIFE_0 WARM_DATA WRITE_LIFE_4 +WRITE_LIFE_1 " " +WRITE_LIFE_3 " " +WRITE_LIFE_4 " " + +-- direct io +WRITE_LIFE_5 COLD_DATA WRITE_LIFE_5 +WRITE_LIFE_2 HOT_DATA WRITE_LIFE_2 +WRITE_LIFE_0 WARM_DATA WRITE_LIFE_0 +WRITE_LIFE_1 " WRITE_LIFE_1 +WRITE_LIFE_3 " WRITE_LIFE_3 +WRITE_LIFE_4 " WRITE_LIFE_4 +===================== ======================== =================== + Fallocate(2) Policy ------------------- diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 4e42b5f24deb..b92fcfd6ab42 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -478,6 +478,8 @@ static struct bio *__bio_alloc(struct f2fs_io_info *fio, int npages) } else { bio->bi_end_io = f2fs_write_end_io; bio->bi_private = sbi; + bio->bi_lifetime = f2fs_io_type_to_rw_hint(sbi, fio->type, + fio->temp); } iostat_alloc_and_bind_ctx(sbi, bio, NULL); diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 8e0c66a6b097..adbc42e20201 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -158,6 +158,7 @@ struct f2fs_mount_info { int s_jquota_fmt; /* Format of quota to use */ #endif /* For which write hints are passed down to block layer */ + int whint_mode; int alloc_mode; /* segment allocation policy */ int fsync_mode; /* fsync policy */ int fs_mode; /* fs mode: LFS or ADAPTIVE */ @@ -1345,6 +1346,12 @@ enum { FS_MODE_FRAGMENT_BLK, /* block fragmentation mode */ }; +enum { + WHINT_MODE_OFF, /* not pass down write hints */ + WHINT_MODE_USER, /* try to pass down hints given by users */ + WHINT_MODE_FS, /* pass down hints with F2FS policy */ +}; + enum { ALLOC_MODE_DEFAULT, /* stay default */ ALLOC_MODE_REUSE, /* reuse segments as much as possible */ @@ -3731,6 +3738,8 @@ void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi); int __init f2fs_create_segment_manager_caches(void); void f2fs_destroy_segment_manager_caches(void); int f2fs_rw_hint_to_seg_type(enum rw_hint hint); +enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi, + enum page_type type, enum temp_type temp); unsigned int f2fs_usable_segs_in_sec(struct f2fs_sb_info *sbi, unsigned int segno); unsigned int f2fs_usable_blks_in_seg(struct f2fs_sb_info *sbi, diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 098a574d8d84..e5a983e6de46 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -3290,6 +3290,101 @@ int f2fs_rw_hint_to_seg_type(enum rw_hint hint) } } +/* This returns write hints for each segment type. This hints will be + * passed down to block layer. There are mapping tables which depend on + * the mount option 'whint_mode'. + * + * 1) whint_mode=off. F2FS only passes down WRITE_LIFE_0. + * + * 2) whint_mode=user-based. F2FS tries to pass down hints given by users. + * + * User F2FS Block + * ---- ---- ----- + * META WRITE_LIFE_0 + * HOT_NODE " + * WARM_NODE " + * COLD_NODE " + * ioctl(COLD) COLD_DATA WRITE_LIFE_5 + * extension list " " + * + * -- buffered io + * WRITE_LIFE_5 COLD_DATA WRITE_LIFE_5 + * WRITE_LIFE_2 HOT_DATA WRITE_LIFE_2 + * WRITE_LIFE_0 WARM_DATA WRITE_LIFE_0 + * WRITE_LIFE_1 " " + * WRITE_LIFE_3 " " + * WRITE_LIFE_4 " " + * + * -- direct io + * WRITE_LIFE_5 COLD_DATA WRITE_LIFE_5 + * WRITE_LIFE_2 HOT_DATA WRITE_LIFE_2 + * WRITE_LIFE_0 WARM_DATA WRITE_LIFE_0 + * WRITE_LIFE_1 " WRITE_LIFE_1 + * WRITE_LIFE_3 " WRITE_LIFE_3 + * WRITE_LIFE_4 " WRITE_LIFE_4 + * + * 3) whint_mode=fs-based. F2FS passes down hints with its policy. + * + * User F2FS Block + * ---- ---- ----- + * META WRITE_LIFE_3; + * HOT_NODE WRITE_LIFE_0 + * WARM_NODE " + * COLD_NODE WRITE_LIFE_1 + * ioctl(COLD) COLD_DATA WRITE_LIFE_5 + * extension list " " + * + * -- buffered io + * WRITE_LIFE_5 COLD_DATA WRITE_LIFE_5 + * WRITE_LIFE_2 HOT_DATA WRITE_LIFE_2 + * WRITE_LIFE_0 WARM_DATA WRITE_LIFE_4 + * WRITE_LIFE_1 " " + * WRITE_LIFE_3 " " + * WRITE_LIFE_4 " " + * + * -- direct io + * WRITE_LIFE_5 COLD_DATA WRITE_LIFE_5 + * WRITE_LIFE_2 HOT_DATA WRITE_LIFE_2 + * WRITE_LIFE_0 WARM_DATA WRITE_LIFE_0 + * WRITE_LIFE_1 " WRITE_LIFE_1 + * WRITE_LIFE_3 " WRITE_LIFE_3 + * WRITE_LIFE_4 " WRITE_LIFE_4 + */ + +enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi, + enum page_type type, enum temp_type temp) +{ + if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER) { + if (type == DATA) { + if (temp == WARM) + return WRITE_LIFE_0; + else if (temp == HOT) + return WRITE_LIFE_2; + else if (temp == COLD) + return WRITE_LIFE_5; + } else { + return WRITE_LIFE_0; + } + } else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS) { + if (type == DATA) { + if (temp == WARM) + return WRITE_LIFE_4; + else if (temp == HOT) + return WRITE_LIFE_2; + else if (temp == COLD) + return WRITE_LIFE_5; + } else if (type == NODE) { + if (temp == WARM || temp == HOT) + return WRITE_LIFE_0; + else if (temp == COLD) + return WRITE_LIFE_1; + } else if (type == META) { + return WRITE_LIFE_3; + } + } + return WRITE_LIFE_0; +} + static int __get_segment_type_2(struct f2fs_io_info *fio) { if (fio->type == DATA) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 033af907c3b1..91f46926f139 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -156,6 +156,7 @@ enum { Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, + Opt_whint, Opt_alloc, Opt_fsync, Opt_test_dummy_encryption, @@ -235,6 +236,7 @@ static match_table_t f2fs_tokens = { {Opt_jqfmt_vfsold, "jqfmt=vfsold"}, {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"}, {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"}, + {Opt_whint, "whint_mode=%s"}, {Opt_alloc, "alloc_mode=%s"}, {Opt_fsync, "fsync_mode=%s"}, {Opt_test_dummy_encryption, "test_dummy_encryption=%s"}, @@ -1026,6 +1028,22 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount) f2fs_info(sbi, "quota operations not supported"); break; #endif + case Opt_whint: + name = match_strdup(&args[0]); + if (!name) + return -ENOMEM; + if (!strcmp(name, "user-based")) { + F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER; + } else if (!strcmp(name, "off")) { + F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF; + } else if (!strcmp(name, "fs-based")) { + F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS; + } else { + kfree(name); + return -EINVAL; + } + kfree(name); + break; case Opt_alloc: name = match_strdup(&args[0]); if (!name) @@ -1437,6 +1455,12 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount) return -EINVAL; } + /* Not pass down write hints if the number of active logs is lesser + * than NR_CURSEG_PERSIST_TYPE. + */ + if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_PERSIST_TYPE) + F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF; + if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) { f2fs_err(sbi, "Allow to mount readonly mode only"); return -EROFS; @@ -2108,6 +2132,10 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root) seq_puts(seq, ",prjquota"); #endif f2fs_show_quota_options(seq, sbi->sb); + if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER) + seq_printf(seq, ",whint_mode=%s", "user-based"); + else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS) + seq_printf(seq, ",whint_mode=%s", "fs-based"); fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb); @@ -2177,6 +2205,7 @@ static void default_options(struct f2fs_sb_info *sbi, bool remount) F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE; F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; + F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF; if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main) <= SMALL_VOLUME_SEGMENTS) F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; @@ -2491,7 +2520,8 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data) need_stop_gc = true; } - if (*flags & SB_RDONLY) { + if (*flags & SB_RDONLY || + F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) { sync_inodes_sb(sb); set_sbi_flag(sbi, SBI_IS_DIRTY); From patchwork Tue Nov 14 21:41:01 2023 Content-Type: text/plain; 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Tue, 14 Nov 2023 13:42:13 -0800 (PST) Received: from bvanassche-linux.mtv.corp.google.com ([2620:0:1000:8411:2278:ad72:cefb:4d49]) by smtp.gmail.com with ESMTPSA id o16-20020a170902d4d000b001c3267ae317sm6133926plg.165.2023.11.14.13.42.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Nov 2023 13:42:12 -0800 (PST) From: Bart Van Assche To: "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Daejun Park , Kanchan Joshi , Bart Van Assche , Avri Altman , "James E.J. Bottomley" Subject: [PATCH v4 06/15] scsi: core: Query the Block Limits Extension VPD page Date: Tue, 14 Nov 2023 13:41:01 -0800 Message-ID: <20231114214132.1486867-7-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.rc0.421.g78406f8d94-goog In-Reply-To: <20231114214132.1486867-1-bvanassche@acm.org> References: <20231114214132.1486867-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Parse the Reduced Stream Control Supported (RSCS) bit from the block limits extension VPD page. The RSCS bit is defined in SBC-5 r05 (https://www.t10.org/cgi-bin/ac.pl?t=f&f=sbc5r05.pdf). Reviewed-by: Avri Altman Reviewed-by: Daejun Park Cc: Martin K. Petersen Signed-off-by: Bart Van Assche --- drivers/scsi/scsi.c | 2 ++ drivers/scsi/scsi_sysfs.c | 10 ++++++++++ drivers/scsi/sd.c | 13 +++++++++++++ drivers/scsi/sd.h | 1 + include/scsi/scsi_device.h | 1 + 5 files changed, 27 insertions(+) diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index 76d369343c7a..74cc3369dd8d 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -499,6 +499,8 @@ void scsi_attach_vpd(struct scsi_device *sdev) scsi_update_vpd_page(sdev, 0xb1, &sdev->vpd_pgb1); if (vpd_buf->data[i] == 0xb2) scsi_update_vpd_page(sdev, 0xb2, &sdev->vpd_pgb2); + if (vpd_buf->data[i] == 0xb7) + scsi_update_vpd_page(sdev, 0xb7, &sdev->vpd_pgb7); } kfree(vpd_buf); } diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c index 24f6eefb6803..93652a786a46 100644 --- a/drivers/scsi/scsi_sysfs.c +++ b/drivers/scsi/scsi_sysfs.c @@ -449,6 +449,7 @@ static void scsi_device_dev_release(struct device *dev) struct scsi_vpd *vpd_pg80 = NULL, *vpd_pg83 = NULL; struct scsi_vpd *vpd_pg0 = NULL, *vpd_pg89 = NULL; struct scsi_vpd *vpd_pgb0 = NULL, *vpd_pgb1 = NULL, *vpd_pgb2 = NULL; + struct scsi_vpd *vpd_pgb7 = NULL; unsigned long flags; might_sleep(); @@ -494,6 +495,8 @@ static void scsi_device_dev_release(struct device *dev) lockdep_is_held(&sdev->inquiry_mutex)); vpd_pgb2 = rcu_replace_pointer(sdev->vpd_pgb2, vpd_pgb2, lockdep_is_held(&sdev->inquiry_mutex)); + vpd_pgb7 = rcu_replace_pointer(sdev->vpd_pgb7, vpd_pgb7, + lockdep_is_held(&sdev->inquiry_mutex)); mutex_unlock(&sdev->inquiry_mutex); if (vpd_pg0) @@ -510,6 +513,8 @@ static void scsi_device_dev_release(struct device *dev) kfree_rcu(vpd_pgb1, rcu); if (vpd_pgb2) kfree_rcu(vpd_pgb2, rcu); + if (vpd_pgb7) + kfree_rcu(vpd_pgb7, rcu); kfree(sdev->inquiry); kfree(sdev); @@ -921,6 +926,7 @@ sdev_vpd_pg_attr(pg89); sdev_vpd_pg_attr(pgb0); sdev_vpd_pg_attr(pgb1); sdev_vpd_pg_attr(pgb2); +sdev_vpd_pg_attr(pgb7); sdev_vpd_pg_attr(pg0); static ssize_t show_inquiry(struct file *filep, struct kobject *kobj, @@ -1295,6 +1301,9 @@ static umode_t scsi_sdev_bin_attr_is_visible(struct kobject *kobj, if (attr == &dev_attr_vpd_pgb2 && !sdev->vpd_pgb2) return 0; + if (attr == &dev_attr_vpd_pgb7 && !sdev->vpd_pgb7) + return 0; + return S_IRUGO; } @@ -1347,6 +1356,7 @@ static struct bin_attribute *scsi_sdev_bin_attrs[] = { &dev_attr_vpd_pgb0, &dev_attr_vpd_pgb1, &dev_attr_vpd_pgb2, + &dev_attr_vpd_pgb7, &dev_attr_inquiry, NULL }; diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 530918cbfce2..56c4310a741b 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -3103,6 +3103,18 @@ static void sd_read_block_limits(struct scsi_disk *sdkp) rcu_read_unlock(); } +/* Parse the Block Limits Extension VPD page (0xb7) */ +static void sd_read_block_limits_ext(struct scsi_disk *sdkp) +{ + struct scsi_vpd *vpd; + + rcu_read_lock(); + vpd = rcu_dereference(sdkp->device->vpd_pgb7); + if (vpd && vpd->len >= 2) + sdkp->rscs = vpd->data[5] & 1; + rcu_read_unlock(); +} + /** * sd_read_block_characteristics - Query block dev. characteristics * @sdkp: disk to query @@ -3457,6 +3469,7 @@ static int sd_revalidate_disk(struct gendisk *disk) if (scsi_device_supports_vpd(sdp)) { sd_read_block_provisioning(sdkp); sd_read_block_limits(sdkp); + sd_read_block_limits_ext(sdkp); sd_read_block_characteristics(sdkp); sd_zbc_read_zones(sdkp, buffer); sd_read_cpr(sdkp); diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h index 409dda5350d1..e4539122f2a2 100644 --- a/drivers/scsi/sd.h +++ b/drivers/scsi/sd.h @@ -151,6 +151,7 @@ struct scsi_disk { unsigned urswrz : 1; unsigned security : 1; unsigned ignore_medium_access_errors : 1; + bool rscs : 1; /* reduced stream control support */ }; #define to_scsi_disk(obj) container_of(obj, struct scsi_disk, disk_dev) diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index 10480eb582b2..a1588f3965f9 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -153,6 +153,7 @@ struct scsi_device { struct scsi_vpd __rcu *vpd_pgb0; struct scsi_vpd __rcu *vpd_pgb1; struct scsi_vpd __rcu *vpd_pgb2; + struct scsi_vpd __rcu *vpd_pgb7; struct scsi_target *sdev_target; From patchwork Tue Nov 14 21:41:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13456007 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 2598CC4167D for ; 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Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Daejun Park , Kanchan Joshi , Bart Van Assche , "James E.J. Bottomley" Subject: [PATCH v4 07/15] scsi_proto: Add structures and constants related to I/O groups and streams Date: Tue, 14 Nov 2023 13:41:02 -0800 Message-ID: <20231114214132.1486867-8-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.rc0.421.g78406f8d94-goog In-Reply-To: <20231114214132.1486867-1-bvanassche@acm.org> References: <20231114214132.1486867-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Prepare for adding code that will query the I/O advice hints group descriptors and for adding code that will retrieve the stream status. Cc: Martin K. Petersen Signed-off-by: Bart Van Assche --- include/scsi/scsi_proto.h | 75 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) diff --git a/include/scsi/scsi_proto.h b/include/scsi/scsi_proto.h index 07d65c1f59db..9ee4983c23b4 100644 --- a/include/scsi/scsi_proto.h +++ b/include/scsi/scsi_proto.h @@ -10,6 +10,7 @@ #ifndef _SCSI_PROTO_H_ #define _SCSI_PROTO_H_ +#include #include /* @@ -126,6 +127,7 @@ #define SAI_READ_CAPACITY_16 0x10 #define SAI_GET_LBA_STATUS 0x12 #define SAI_REPORT_REFERRALS 0x13 +#define SAI_GET_STREAM_STATUS 0x16 /* values for maintenance in */ #define MI_REPORT_IDENTIFYING_INFORMATION 0x05 #define MI_REPORT_TARGET_PGS 0x0a @@ -275,6 +277,79 @@ struct scsi_lun { __u8 scsi_lun[8]; }; +/* SBC-5 IO advice hints group descriptor */ +struct scsi_io_group_descriptor { +#if defined(__BIG_ENDIAN) + u8 io_advice_hints_mode: 2; + u8 reserved1: 3; + u8 st_enble: 1; + u8 cs_enble: 1; + u8 ic_enable: 1; +#elif defined(__LITTLE_ENDIAN) + u8 ic_enable: 1; + u8 cs_enble: 1; + u8 st_enble: 1; + u8 reserved1: 3; + u8 io_advice_hints_mode: 2; +#else +#error +#endif + u8 reserved2[3]; + /* Logical block markup descriptor */ +#if defined(__BIG_ENDIAN) + u8 acdlu: 1; + u8 reserved3: 1; + u8 rlbsr: 2; + u8 lbm_descriptor_type: 4; +#elif defined(__LITTLE_ENDIAN) + u8 lbm_descriptor_type: 4; + u8 rlbsr: 2; + u8 reserved3: 1; + u8 acdlu: 1; +#else +#error +#endif + u8 params[2]; + u8 reserved4; + u8 reserved5[8]; +}; + +static_assert(sizeof(struct scsi_io_group_descriptor) == 16); + +struct scsi_stream_status { +#if defined(__BIG_ENDIAN) + u16 perm: 1; + u16 reserved1: 15; +#elif defined(__LITTLE_ENDIAN) + u16 reserved1: 15; + u16 perm: 1; +#else +#error +#endif + __be16 stream_identifier; +#if defined(__BIG_ENDIAN) + u8 reserved2: 2; + u8 rel_lifetime: 6; +#elif defined(__LITTLE_ENDIAN) + u8 rel_lifetime: 6; + u8 reserved2: 2; +#else +#error +#endif + u8 reserved3[3]; +}; + +static_assert(sizeof(struct scsi_stream_status) == 8); + +struct scsi_stream_status_header { + __be32 len; /* length in bytes of stream_status[] array. */ + u16 reserved; + u16 number_of_open_streams; + DECLARE_FLEX_ARRAY(struct scsi_stream_status, stream_status); +}; + +static_assert(sizeof(struct scsi_stream_status_header) == 8); + /* SPC asymmetric access states */ #define SCSI_ACCESS_STATE_OPTIMAL 0x00 #define SCSI_ACCESS_STATE_ACTIVE 0x01 From patchwork Tue Nov 14 21:41:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13456045 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 123BFC4332F for ; Tue, 14 Nov 2023 21:42:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234127AbjKNVm0 (ORCPT ); Tue, 14 Nov 2023 16:42:26 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39792 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234122AbjKNVmX (ORCPT ); Tue, 14 Nov 2023 16:42:23 -0500 Received: from mail-pl1-f174.google.com (mail-pl1-f174.google.com [209.85.214.174]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E3B6ED8; Tue, 14 Nov 2023 13:42:16 -0800 (PST) Received: by mail-pl1-f174.google.com with SMTP id d9443c01a7336-1cc7077d34aso47199625ad.2; Tue, 14 Nov 2023 13:42:16 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699998136; x=1700602936; 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=WX1GzJ5gLOwQZNnrUU/eLZl7guwHGfEvifbd2OOUV5Y=; b=dM3pniqF506phfucDnjAtecXNigT/s59xb5AxRuYN+kG8TcLe1sWpSpiIc18nTUVGA wuqigKxU+piSsBF4fra1FU7NpTZplrBmwpCWFiqRc6R0cemFCiY+vrR9Sd0R2cztSuWb WUtKrm4y1r6CAQYZMrr4wZPwndUaU8mhufaHFku2CV+30euqPJfqqIUCfxX0AruDedU3 zOzGPwPis+xJiYxB1YgojcHODWhzpE3GDjZ+GtmU7gA0wOfTx4+PaFLEZuTMYZKi1CAT 2xxUlfhI+TG8vId1o842AhtPyCdS2VuSZSIvStp0zGXgfyg4umdKThvC9+75P9zb9/NT J2lg== X-Gm-Message-State: AOJu0Yzrb4ZPNGvbVP+g2aPKt+L1JkXgm/2lIrb2d1Q+vEAV+K1re6HD cwe0bHG2iej4bUynotq+T7M= X-Google-Smtp-Source: AGHT+IEU5zdUuokXwRh32pOcoUuMPhRCwTOtPShM0n3Q3xuXruiYPGiUnfFbdUD7DHCZpGoSY1A0Ag== X-Received: by 2002:a17:902:968e:b0:1cc:3fc9:1802 with SMTP id n14-20020a170902968e00b001cc3fc91802mr3621526plp.61.1699998136284; Tue, 14 Nov 2023 13:42:16 -0800 (PST) Received: from bvanassche-linux.mtv.corp.google.com ([2620:0:1000:8411:2278:ad72:cefb:4d49]) by smtp.gmail.com with ESMTPSA id o16-20020a170902d4d000b001c3267ae317sm6133926plg.165.2023.11.14.13.42.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Nov 2023 13:42:15 -0800 (PST) From: Bart Van Assche To: "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Daejun Park , Kanchan Joshi , Bart Van Assche , Damien Le Moal , "James E.J. Bottomley" Subject: [PATCH v4 08/15] sd: Translate data lifetime information Date: Tue, 14 Nov 2023 13:41:03 -0800 Message-ID: <20231114214132.1486867-9-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.rc0.421.g78406f8d94-goog In-Reply-To: <20231114214132.1486867-1-bvanassche@acm.org> References: <20231114214132.1486867-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Recently T10 standardized SBC constrained streams. This mechanism allows to pass data lifetime information to SCSI devices in the group number field. Add support for translating write hint information into a permanent stream number in the sd driver. Use WRITE(10) instead of WRITE(6) if data lifetime information is present because the WRITE(6) command does not have a GROUP NUMBER field. Cc: Martin K. Petersen Cc: Christoph Hellwig Cc: Damien Le Moal Signed-off-by: Bart Van Assche --- drivers/scsi/sd.c | 98 +++++++++++++++++++++++++++++++++++++++++++++-- drivers/scsi/sd.h | 2 + 2 files changed, 97 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 56c4310a741b..61a59f9168bc 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -47,6 +47,7 @@ #include #include #include +#include #include #include #include @@ -1080,12 +1081,38 @@ static blk_status_t sd_setup_flush_cmnd(struct scsi_cmnd *cmd) return BLK_STS_OK; } +/** + * sd_group_number() - Compute the GROUP NUMBER field + * @cmd: SCSI command for which to compute the value of the six-bit GROUP NUMBER + * field. + * + * From SBC-5 r05 (https://www.t10.org/cgi-bin/ac.pl?t=f&f=sbc5r05.pdf): + * 0: no relative lifetime. + * 1: shortest relative lifetime. + * 2: second shortest relative lifetime. + * 3 - 0x3d: intermediate relative lifetimes. + * 0x3e: second longest relative lifetime. + * 0x3f: longest relative lifetime. + */ +static u8 sd_group_number(struct scsi_cmnd *cmd) +{ + const struct request *rq = scsi_cmd_to_rq(cmd); + struct scsi_disk *sdkp = scsi_disk(rq->q->disk); + + if (!sdkp->rscs) + return 0; + + return min3((u32)rq->lifetime, (u32)sdkp->permanent_stream_count, + 0x3fu); +} + static blk_status_t sd_setup_rw32_cmnd(struct scsi_cmnd *cmd, bool write, sector_t lba, unsigned int nr_blocks, unsigned char flags, unsigned int dld) { cmd->cmd_len = SD_EXT_CDB_SIZE; cmd->cmnd[0] = VARIABLE_LENGTH_CMD; + cmd->cmnd[6] = sd_group_number(cmd); cmd->cmnd[7] = 0x18; /* Additional CDB len */ cmd->cmnd[9] = write ? WRITE_32 : READ_32; cmd->cmnd[10] = flags; @@ -1104,7 +1131,7 @@ static blk_status_t sd_setup_rw16_cmnd(struct scsi_cmnd *cmd, bool write, cmd->cmd_len = 16; cmd->cmnd[0] = write ? WRITE_16 : READ_16; cmd->cmnd[1] = flags | ((dld >> 2) & 0x01); - cmd->cmnd[14] = (dld & 0x03) << 6; + cmd->cmnd[14] = ((dld & 0x03) << 6) | sd_group_number(cmd); cmd->cmnd[15] = 0; put_unaligned_be64(lba, &cmd->cmnd[2]); put_unaligned_be32(nr_blocks, &cmd->cmnd[10]); @@ -1119,7 +1146,7 @@ static blk_status_t sd_setup_rw10_cmnd(struct scsi_cmnd *cmd, bool write, cmd->cmd_len = 10; cmd->cmnd[0] = write ? WRITE_10 : READ_10; cmd->cmnd[1] = flags; - cmd->cmnd[6] = 0; + cmd->cmnd[6] = sd_group_number(cmd); cmd->cmnd[9] = 0; put_unaligned_be32(lba, &cmd->cmnd[2]); put_unaligned_be16(nr_blocks, &cmd->cmnd[7]); @@ -1256,7 +1283,7 @@ static blk_status_t sd_setup_read_write_cmnd(struct scsi_cmnd *cmd) ret = sd_setup_rw16_cmnd(cmd, write, lba, nr_blocks, protect | fua, dld); } else if ((nr_blocks > 0xff) || (lba > 0x1fffff) || - sdp->use_10_for_rw || protect) { + sdp->use_10_for_rw || protect || rq->lifetime) { ret = sd_setup_rw10_cmnd(cmd, write, lba, nr_blocks, protect | fua); } else { @@ -2996,6 +3023,70 @@ sd_read_cache_type(struct scsi_disk *sdkp, unsigned char *buffer) sdkp->DPOFUA = 0; } +static bool sd_is_perm_stream(struct scsi_disk *sdkp, unsigned stream_id) +{ + u8 cdb[16] = { SERVICE_ACTION_IN_16, SAI_GET_STREAM_STATUS }; + struct { + struct scsi_stream_status_header h; + struct scsi_stream_status s; + } buf; + struct scsi_device *sdev = sdkp->device; + struct scsi_sense_hdr sshdr; + const struct scsi_exec_args exec_args = { + .sshdr = &sshdr, + }; + int res; + + put_unaligned_be16(stream_id, &cdb[4]); + put_unaligned_be32(sizeof(buf), &cdb[10]); + + res = scsi_execute_cmd(sdev, cdb, REQ_OP_DRV_IN, &buf, sizeof(buf), + SD_TIMEOUT, sdkp->max_retries, &exec_args); + if (res < 0) + return false; + if (scsi_status_is_check_condition(res) && scsi_sense_valid(&sshdr)) + sd_print_sense_hdr(sdkp, &sshdr); + if (res) + return false; + if (get_unaligned_be32(&buf.h.len) < sizeof(struct scsi_stream_status)) + return false; + return buf.h.stream_status[0].perm; +} + +static void sd_read_io_hints(struct scsi_disk *sdkp, unsigned char *buffer) +{ + struct scsi_device *sdp = sdkp->device; + const struct scsi_io_group_descriptor *desc, *start, *end; + struct scsi_sense_hdr sshdr; + struct scsi_mode_data data; + int res; + + res = scsi_mode_sense(sdp, /*dbd=*/0x8, /*modepage=*/0x0a, + /*subpage=*/0x05, buffer, SD_BUF_SIZE, + SD_TIMEOUT, sdkp->max_retries, &data, &sshdr); + if (res < 0) + return; + start = (void *)buffer + data.header_length + 16; + end = (void *)buffer + ALIGN_DOWN(data.header_length + data.length, + sizeof(*end)); + /* + * From "SBC-5 Constrained Streams with Data Lifetimes": Device severs + * should assign the lowest numbered stream identifiers to permanent + * streams. + */ + for (desc = start; desc < end; desc++) + if (!desc->st_enble || !sd_is_perm_stream(sdkp, desc - start)) + break; + sdkp->permanent_stream_count = desc - start; + if (sdkp->rscs && sdkp->permanent_stream_count < 2) + sd_printk(KERN_INFO, sdkp, + "Unexpected: RSCS has been set and the permanent stream count is %u\n", + sdkp->permanent_stream_count); + else if (sdkp->permanent_stream_count) + sd_printk(KERN_INFO, sdkp, "permanent stream count = %d\n", + sdkp->permanent_stream_count); +} + /* * The ATO bit indicates whether the DIF application tag is available * for use by the operating system. @@ -3479,6 +3570,7 @@ static int sd_revalidate_disk(struct gendisk *disk) sd_read_write_protect_flag(sdkp, buffer); sd_read_cache_type(sdkp, buffer); + sd_read_io_hints(sdkp, buffer); sd_read_app_tag_own(sdkp, buffer); sd_read_write_same(sdkp, buffer); sd_read_security(sdkp, buffer); diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h index e4539122f2a2..16cf7c543ccf 100644 --- a/drivers/scsi/sd.h +++ b/drivers/scsi/sd.h @@ -125,6 +125,8 @@ struct scsi_disk { unsigned int physical_block_size; unsigned int max_medium_access_timeouts; unsigned int medium_access_timed_out; + /* number of permanent streams */ + u16 permanent_stream_count; u8 media_present; u8 write_prot; u8 protection_type;/* Data Integrity Field */ From patchwork Tue Nov 14 21:41:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13456008 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 CEB0BC4167B for ; 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Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Daejun Park , Kanchan Joshi , Bart Van Assche , Avri Altman , Douglas Gilbert , "James E.J. Bottomley" Subject: [PATCH v4 09/15] scsi_debug: Reduce code duplication Date: Tue, 14 Nov 2023 13:41:04 -0800 Message-ID: <20231114214132.1486867-10-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.rc0.421.g78406f8d94-goog In-Reply-To: <20231114214132.1486867-1-bvanassche@acm.org> References: <20231114214132.1486867-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org All VPD pages have the page code in byte one. Reduce code duplication by storing the VPD page code once. Reviewed-by: Avri Altman Cc: Martin K. Petersen Cc: Douglas Gilbert Signed-off-by: Bart Van Assche --- drivers/scsi/scsi_debug.c | 16 ++-------------- 1 file changed, 2 insertions(+), 14 deletions(-) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 67922e2c4c19..5cf337ba9c19 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -1909,7 +1909,8 @@ static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) u32 len; char lu_id_str[6]; int host_no = devip->sdbg_host->shost->host_no; - + + arr[1] = cmd[2]; port_group_id = (((host_no + 1) & 0x7f) << 8) + (devip->channel & 0x7f); if (sdebug_vpd_use_hostno == 0) @@ -1920,7 +1921,6 @@ static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) (devip->target * 1000) - 3; len = scnprintf(lu_id_str, 6, "%d", lu_id_num); if (0 == cmd[2]) { /* supported vital product data pages */ - arr[1] = cmd[2]; /*sanity */ n = 4; arr[n++] = 0x0; /* this page */ arr[n++] = 0x80; /* unit serial number */ @@ -1941,23 +1941,18 @@ static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) } arr[3] = n - 4; /* number of supported VPD pages */ } else if (0x80 == cmd[2]) { /* unit serial number */ - arr[1] = cmd[2]; /*sanity */ arr[3] = len; memcpy(&arr[4], lu_id_str, len); } else if (0x83 == cmd[2]) { /* device identification */ - arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_vpd_83(&arr[4], port_group_id, target_dev_id, lu_id_num, lu_id_str, len, &devip->lu_name); } else if (0x84 == cmd[2]) { /* Software interface ident. */ - arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_vpd_84(&arr[4]); } else if (0x85 == cmd[2]) { /* Management network addresses */ - arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_vpd_85(&arr[4]); } else if (0x86 == cmd[2]) { /* extended inquiry */ - arr[1] = cmd[2]; /*sanity */ arr[3] = 0x3c; /* number of following entries */ if (sdebug_dif == T10_PI_TYPE3_PROTECTION) arr[4] = 0x4; /* SPT: GRD_CHK:1 */ @@ -1967,30 +1962,23 @@ static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) arr[4] = 0x0; /* no protection stuff */ arr[5] = 0x7; /* head of q, ordered + simple q's */ } else if (0x87 == cmd[2]) { /* mode page policy */ - arr[1] = cmd[2]; /*sanity */ arr[3] = 0x8; /* number of following entries */ arr[4] = 0x2; /* disconnect-reconnect mp */ arr[6] = 0x80; /* mlus, shared */ arr[8] = 0x18; /* protocol specific lu */ arr[10] = 0x82; /* mlus, per initiator port */ } else if (0x88 == cmd[2]) { /* SCSI Ports */ - arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_vpd_88(&arr[4], target_dev_id); } else if (is_disk_zbc && 0x89 == cmd[2]) { /* ATA info */ - arr[1] = cmd[2]; /*sanity */ n = inquiry_vpd_89(&arr[4]); put_unaligned_be16(n, arr + 2); } else if (is_disk_zbc && 0xb0 == cmd[2]) { /* Block limits */ - arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_vpd_b0(&arr[4]); } else if (is_disk_zbc && 0xb1 == cmd[2]) { /* Block char. */ - arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_vpd_b1(devip, &arr[4]); } else if (is_disk && 0xb2 == cmd[2]) { /* LB Prov. */ - arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_vpd_b2(&arr[4]); } else if (is_zbc && cmd[2] == 0xb6) { /* ZB dev. charact. */ - arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_vpd_b6(devip, &arr[4]); } else { mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, -1); From patchwork Tue Nov 14 21:41:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13456046 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 2CACEC28B2B for ; Tue, 14 Nov 2023 21:42:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234128AbjKNVm1 (ORCPT ); Tue, 14 Nov 2023 16:42:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39858 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234123AbjKNVmX (ORCPT ); Tue, 14 Nov 2023 16:42:23 -0500 Received: from mail-pf1-f179.google.com (mail-pf1-f179.google.com [209.85.210.179]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 136ACD3; 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Tue, 14 Nov 2023 13:42:19 -0800 (PST) Received: from bvanassche-linux.mtv.corp.google.com ([2620:0:1000:8411:2278:ad72:cefb:4d49]) by smtp.gmail.com with ESMTPSA id o16-20020a170902d4d000b001c3267ae317sm6133926plg.165.2023.11.14.13.42.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Nov 2023 13:42:19 -0800 (PST) From: Bart Van Assche To: "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Daejun Park , Kanchan Joshi , Bart Van Assche , Douglas Gilbert , "James E.J. Bottomley" Subject: [PATCH v4 10/15] scsi_debug: Support the block limits extension VPD page Date: Tue, 14 Nov 2023 13:41:05 -0800 Message-ID: <20231114214132.1486867-11-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.rc0.421.g78406f8d94-goog In-Reply-To: <20231114214132.1486867-1-bvanassche@acm.org> References: <20231114214132.1486867-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From SBC-5 r05: "Reduced stream control: a) reduces the maximum number of streams that the device server supports; and b) increases the number of write commands that are able to specify a stream to be written in any write command that contains the GROUP NUMBER field in its CDB. If the RSCS bit (see 6.6.5) is set to one, then the device server shall: a) support per group stream identifier usage as described in 4.32.2; b) support the IO Advice Hints Grouping mode page (see 6.5.7); and c) set the MAXIMUM NUMBER OF STREAMS field (see 6.6.5) to a value that is less than 64. Device servers that set the RSCS bit to one may support other features (e.g., permanent streams (see 4.32.4)). 4.32.4 Permanent streams A permanent stream is a stream for which the device server does not allow closing or otherwise modifying the configuration of that stream. The PERM bit (see 5.9.2.3) indicates whether a stream is a permanent stream. If a STREAM CONTROL command (see 5.32) specifies the closing of a permanent stream, the device server terminates that command with CHECK CONDITION status instead of closing the specified stream. A permanent stream is always an open stream. Device severs should assign the lowest numbered stream identifiers to permanent streams." Report that reduced stream control is supported. Cc: Martin K. Petersen Cc: Douglas Gilbert Signed-off-by: Bart Van Assche --- drivers/scsi/scsi_debug.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 5cf337ba9c19..11c57aed73ce 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -1938,6 +1938,7 @@ static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) arr[n++] = 0xb2; /* LB Provisioning */ if (is_zbc) arr[n++] = 0xb6; /* ZB dev. char. */ + arr[n++] = 0xb7; /* Block limits extension */ } arr[3] = n - 4; /* number of supported VPD pages */ } else if (0x80 == cmd[2]) { /* unit serial number */ @@ -1980,6 +1981,9 @@ static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) arr[3] = inquiry_vpd_b2(&arr[4]); } else if (is_zbc && cmd[2] == 0xb6) { /* ZB dev. charact. */ arr[3] = inquiry_vpd_b6(devip, &arr[4]); + } else if (cmd[2] == 0xb7) { /* block limits extension page */ + arr[3] = 2; /* page length */ + arr[5] = 1; /* Reduced stream control support (RSCS) */ } else { mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, -1); kfree(arr); From patchwork Tue Nov 14 21:41:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13456047 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 A2E9BC4332F for ; Tue, 14 Nov 2023 21:42:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234123AbjKNVmg (ORCPT ); Tue, 14 Nov 2023 16:42:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39892 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234124AbjKNVmY (ORCPT ); Tue, 14 Nov 2023 16:42:24 -0500 Received: from mail-pl1-f170.google.com (mail-pl1-f170.google.com [209.85.214.170]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7E115D6; Tue, 14 Nov 2023 13:42:21 -0800 (PST) Received: by mail-pl1-f170.google.com with SMTP id d9443c01a7336-1cc5b705769so55051615ad.0; Tue, 14 Nov 2023 13:42:21 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699998141; x=1700602941; 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=GVFPJUULVVwuYnf49ztY/tTT0ax+5xK1Qvs6cG/QHSg=; b=pmqUjBlEE+5qnwTOl8c4szKH5DyYYHti1HyncvqRrsrGOgEhe1CtsUCXFd9C+6mk/a L7dodBc4KCQzONQdlcbefS3FGeZiYpYprNJ4hPYY83j/ilLzoLx4RBWMzcj7Z2tz20dB pMNM8a+CKTq1leLNFZ1MXzRTeadLh8HRi6/UAi7tY3HvlBHhc6aOco92ZSUfRZBQh6QO nJvU9SxhFkSrx9qEPWC1OJLp2wSDYV/s1mrCqzfuXqtucbpfNFxh2L67Bfum7PVre3FU w1HkWqRqCaHSckTMSHU54aLYLU3w/D+vS2Tmi1N4TZEVHQD+wS/gQ1xTCifmQ3+gRUkS tUqA== X-Gm-Message-State: AOJu0YxPCtQWu08gdRpOQRXD3pVYyaeSqOVaCTdUf5MpilRvTihCpQWa +tVVPhNUyMNxLmcHKeNeez8= X-Google-Smtp-Source: AGHT+IESh0wPeYT0Qx2qTHJavnpLDcmDwUv6LCtxO0CxU4u4l8W3v1IaltQ6w4odTkelljdV+YpWYg== X-Received: by 2002:a17:903:1cb:b0:1cc:49e7:ee16 with SMTP id e11-20020a17090301cb00b001cc49e7ee16mr4694286plh.12.1699998140772; Tue, 14 Nov 2023 13:42:20 -0800 (PST) Received: from bvanassche-linux.mtv.corp.google.com ([2620:0:1000:8411:2278:ad72:cefb:4d49]) by smtp.gmail.com with ESMTPSA id o16-20020a170902d4d000b001c3267ae317sm6133926plg.165.2023.11.14.13.42.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Nov 2023 13:42:20 -0800 (PST) From: Bart Van Assche To: "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Daejun Park , Kanchan Joshi , Bart Van Assche , Douglas Gilbert , "James E.J. Bottomley" Subject: [PATCH v4 11/15] scsi_debug: Rework page code error handling Date: Tue, 14 Nov 2023 13:41:06 -0800 Message-ID: <20231114214132.1486867-12-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.rc0.421.g78406f8d94-goog In-Reply-To: <20231114214132.1486867-1-bvanassche@acm.org> References: <20231114214132.1486867-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Instead of tracking whether or not the page code is valid in a boolean variable, jump to error handling code if an unsupported page code is encountered. Cc: Martin K. Petersen Cc: Douglas Gilbert Signed-off-by: Bart Van Assche --- drivers/scsi/scsi_debug.c | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 11c57aed73ce..12c3e3b68552 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -2638,7 +2638,7 @@ static int resp_mode_sense(struct scsi_cmnd *scp, unsigned char *ap; unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; unsigned char *cmd = scp->cmnd; - bool dbd, llbaa, msense_6, is_disk, is_zbc, bad_pcode; + bool dbd, llbaa, msense_6, is_disk, is_zbc; dbd = !!(cmd[1] & 0x8); /* disable block descriptors */ pcontrol = (cmd[2] & 0xc0) >> 6; @@ -2702,7 +2702,6 @@ static int resp_mode_sense(struct scsi_cmnd *scp, mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); return check_condition_result; } - bad_pcode = false; switch (pcode) { case 0x1: /* Read-Write error recovery page, direct access */ @@ -2717,15 +2716,17 @@ static int resp_mode_sense(struct scsi_cmnd *scp, if (is_disk) { len = resp_format_pg(ap, pcontrol, target); offset += len; - } else - bad_pcode = true; + } else { + goto bad_pcode; + } break; case 0x8: /* Caching page, direct access */ if (is_disk || is_zbc) { len = resp_caching_pg(ap, pcontrol, target); offset += len; - } else - bad_pcode = true; + } else { + goto bad_pcode; + } break; case 0xa: /* Control Mode page, all devices */ len = resp_ctrl_m_pg(ap, pcontrol, target); @@ -2778,18 +2779,17 @@ static int resp_mode_sense(struct scsi_cmnd *scp, } break; default: - bad_pcode = true; - break; - } - if (bad_pcode) { - mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); - return check_condition_result; + goto bad_pcode; } if (msense_6) arr[0] = offset - 1; else put_unaligned_be16((offset - 2), arr + 0); return fill_from_dev_buffer(scp, arr, min_t(u32, alloc_len, offset)); + +bad_pcode: + mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); + return check_condition_result; } #define SDEBUG_MAX_MSELECT_SZ 512 From patchwork Tue Nov 14 21:41:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13456048 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 1AC09C4332F for ; Tue, 14 Nov 2023 21:42:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234115AbjKNVmh (ORCPT ); Tue, 14 Nov 2023 16:42:37 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54418 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234132AbjKNVme (ORCPT ); Tue, 14 Nov 2023 16:42:34 -0500 Received: from mail-pl1-f172.google.com (mail-pl1-f172.google.com [209.85.214.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DFCE9E1; Tue, 14 Nov 2023 13:42:22 -0800 (PST) Received: by mail-pl1-f172.google.com with SMTP id d9443c01a7336-1cc3bc5df96so45907665ad.2; Tue, 14 Nov 2023 13:42:22 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699998142; x=1700602942; 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=AgFSYHs24URr/gfUK24Re6W0H5z+nTEw2V94kyUZARU=; b=kw/6EUqgivrBr/xGEuUPSbOESHViUOyKVOZ5ma7ocYL1PADiteDYD6ePiFEy8/UIK+ N+MtFvJKyorRw1ngtavVKrac3Eaj3pSQbxMaNfNb9xPbAa8QtNnILDfR/I9C69myzm09 yfY5h4qfu4FcDSgGXBMk7NTjetRD4f4LFHS1nGaf1IMgk25KEJLTH3IpIRg6d92zOk3P Qc8qrVVIC58iEaDf6aq1jkN2ePD08ie5MRQjv7IOsgn3DzVaDYx9HC/ngZUKhjbirYj/ goMgIxhomBA+1OHMj6cJl81jYoTzyya9icgFRq/J0rdrCEqZOlxm64hLmPOEdJFc0Keu UtAA== X-Gm-Message-State: AOJu0YymTXOuN1vLS9yX2tJonlbG2Z1gXo41o2rr6IYjdIzoWvFbZ8ho p4vJ8SxNcEKNLG8HfcK/7w4= X-Google-Smtp-Source: AGHT+IH/vYomekMGiNa/6S3M4CVY6YC08fyDqeDNPBYvVnfPeH2qE5scY8qdfF2U28xL0xhdBNrEag== X-Received: by 2002:a17:903:41cc:b0:1cc:e36a:8bb with SMTP id u12-20020a17090341cc00b001cce36a08bbmr4340825ple.25.1699998142354; Tue, 14 Nov 2023 13:42:22 -0800 (PST) Received: from bvanassche-linux.mtv.corp.google.com ([2620:0:1000:8411:2278:ad72:cefb:4d49]) by smtp.gmail.com with ESMTPSA id o16-20020a170902d4d000b001c3267ae317sm6133926plg.165.2023.11.14.13.42.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Nov 2023 13:42:21 -0800 (PST) From: Bart Van Assche To: "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Daejun Park , Kanchan Joshi , Bart Van Assche , Douglas Gilbert , "James E.J. Bottomley" Subject: [PATCH v4 12/15] scsi_debug: Rework subpage code error handling Date: Tue, 14 Nov 2023 13:41:07 -0800 Message-ID: <20231114214132.1486867-13-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.rc0.421.g78406f8d94-goog In-Reply-To: <20231114214132.1486867-1-bvanassche@acm.org> References: <20231114214132.1486867-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Move the subpage code checks into the switch statement to make it easier to add support for new page code / subpage code combinations. Cc: Martin K. Petersen Cc: Douglas Gilbert Signed-off-by: Bart Van Assche --- drivers/scsi/scsi_debug.c | 70 ++++++++++++++++++++------------------- 1 file changed, 36 insertions(+), 34 deletions(-) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 12c3e3b68552..a16885fcec24 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -2697,22 +2697,22 @@ static int resp_mode_sense(struct scsi_cmnd *scp, ap = arr + offset; } - if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { - /* TODO: Control Extension page */ - mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); - return check_condition_result; - } - switch (pcode) { case 0x1: /* Read-Write error recovery page, direct access */ + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; len = resp_err_recov_pg(ap, pcontrol, target); offset += len; break; case 0x2: /* Disconnect-Reconnect page, all devices */ + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; len = resp_disconnect_pg(ap, pcontrol, target); offset += len; break; case 0x3: /* Format device page, direct access */ + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; if (is_disk) { len = resp_format_pg(ap, pcontrol, target); offset += len; @@ -2721,6 +2721,8 @@ static int resp_mode_sense(struct scsi_cmnd *scp, } break; case 0x8: /* Caching page, direct access */ + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; if (is_disk || is_zbc) { len = resp_caching_pg(ap, pcontrol, target); offset += len; @@ -2729,14 +2731,14 @@ static int resp_mode_sense(struct scsi_cmnd *scp, } break; case 0xa: /* Control Mode page, all devices */ + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; len = resp_ctrl_m_pg(ap, pcontrol, target); offset += len; break; case 0x19: /* if spc==1 then sas phy, control+discover */ - if ((subpcode > 0x2) && (subpcode < 0xff)) { - mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); - return check_condition_result; - } + if (subpcode > 0x2 && subpcode < 0xff) + goto bad_subpcode; len = 0; if ((0x0 == subpcode) || (0xff == subpcode)) len += resp_sas_sf_m_pg(ap + len, pcontrol, target); @@ -2748,35 +2750,31 @@ static int resp_mode_sense(struct scsi_cmnd *scp, offset += len; break; case 0x1c: /* Informational Exceptions Mode page, all devices */ + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; len = resp_iec_m_pg(ap, pcontrol, target); offset += len; break; case 0x3f: /* Read all Mode pages */ - if ((0 == subpcode) || (0xff == subpcode)) { - len = resp_err_recov_pg(ap, pcontrol, target); - len += resp_disconnect_pg(ap + len, pcontrol, target); - if (is_disk) { - len += resp_format_pg(ap + len, pcontrol, - target); - len += resp_caching_pg(ap + len, pcontrol, - target); - } else if (is_zbc) { - len += resp_caching_pg(ap + len, pcontrol, - target); - } - len += resp_ctrl_m_pg(ap + len, pcontrol, target); - len += resp_sas_sf_m_pg(ap + len, pcontrol, target); - if (0xff == subpcode) { - len += resp_sas_pcd_m_spg(ap + len, pcontrol, - target, target_dev_id); - len += resp_sas_sha_m_spg(ap + len, pcontrol); - } - len += resp_iec_m_pg(ap + len, pcontrol, target); - offset += len; - } else { - mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); - return check_condition_result; + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; + len = resp_err_recov_pg(ap, pcontrol, target); + len += resp_disconnect_pg(ap + len, pcontrol, target); + if (is_disk) { + len += resp_format_pg(ap + len, pcontrol, target); + len += resp_caching_pg(ap + len, pcontrol, target); + } else if (is_zbc) { + len += resp_caching_pg(ap + len, pcontrol, target); + } + len += resp_ctrl_m_pg(ap + len, pcontrol, target); + len += resp_sas_sf_m_pg(ap + len, pcontrol, target); + if (0xff == subpcode) { + len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, + target_dev_id); + len += resp_sas_sha_m_spg(ap + len, pcontrol); } + len += resp_iec_m_pg(ap + len, pcontrol, target); + offset += len; break; default: goto bad_pcode; @@ -2790,6 +2788,10 @@ static int resp_mode_sense(struct scsi_cmnd *scp, bad_pcode: mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); return check_condition_result; + +bad_subpcode: + mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); + return check_condition_result; } #define SDEBUG_MAX_MSELECT_SZ 512 From patchwork Tue Nov 14 21:41:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13456049 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 D7831C4332F for ; Tue, 14 Nov 2023 21:42:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234164AbjKNVmo (ORCPT ); Tue, 14 Nov 2023 16:42:44 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54392 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234142AbjKNVmg (ORCPT ); Tue, 14 Nov 2023 16:42:36 -0500 Received: from mail-pl1-f177.google.com (mail-pl1-f177.google.com [209.85.214.177]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0F3EDDD; 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Tue, 14 Nov 2023 13:42:24 -0800 (PST) Received: from bvanassche-linux.mtv.corp.google.com ([2620:0:1000:8411:2278:ad72:cefb:4d49]) by smtp.gmail.com with ESMTPSA id o16-20020a170902d4d000b001c3267ae317sm6133926plg.165.2023.11.14.13.42.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Nov 2023 13:42:23 -0800 (PST) From: Bart Van Assche To: "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Daejun Park , Kanchan Joshi , Bart Van Assche , Douglas Gilbert , "James E.J. Bottomley" Subject: [PATCH v4 13/15] scsi_debug: Implement the IO Advice Hints Grouping mode page Date: Tue, 14 Nov 2023 13:41:08 -0800 Message-ID: <20231114214132.1486867-14-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.rc0.421.g78406f8d94-goog In-Reply-To: <20231114214132.1486867-1-bvanassche@acm.org> References: <20231114214132.1486867-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Implement an IO Advice Hints Grouping mode page with three permanent streams. A permanent stream is a stream for which the device server does not allow closing or otherwise modifying the configuration of that stream. The stream identifier enable (ST_ENBLE) bit specifies whether the stream identifier may be used in the GROUP NUMBER field of SCSI WRITE commands. Cc: Martin K. Petersen Cc: Douglas Gilbert Signed-off-by: Bart Van Assche --- drivers/scsi/scsi_debug.c | 42 +++++++++++++++++++++++++++++++++++++-- 1 file changed, 40 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index a16885fcec24..98fa675cbf37 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -2552,6 +2552,36 @@ static int resp_ctrl_m_pg(unsigned char *p, int pcontrol, int target) return sizeof(ctrl_m_pg); } +enum { MAXIMUM_NUMBER_OF_STREAMS = 4 }; + +/* IO Advice Hints Grouping mode page */ +static int resp_grouping_m_pg(unsigned char *p, int pcontrol, int target) +{ + /* IO Advice Hints Grouping mode page */ + struct grouping_m_pg { + u8 page_code; + u8 subpage_code; + __be16 page_length; + u8 reserved[12]; + struct scsi_io_group_descriptor + descr[MAXIMUM_NUMBER_OF_STREAMS]; + }; + static const struct grouping_m_pg gr_m_pg = { + .page_code = 0xa, + .subpage_code = 5, + .page_length = cpu_to_be16(sizeof(gr_m_pg) - 4), + .descr = { + { .st_enble = 1 }, + { .st_enble = 1 }, + { .st_enble = 1 }, + { .st_enble = 0 }, + } + }; + + BUILD_BUG_ON(sizeof(struct grouping_m_pg) != 16 + 4 * 16); + memcpy(p, &gr_m_pg, sizeof(gr_m_pg)); + return sizeof(gr_m_pg); +} static int resp_iec_m_pg(unsigned char *p, int pcontrol, int target) { /* Informational Exceptions control mode page for mode_sense */ @@ -2731,9 +2761,17 @@ static int resp_mode_sense(struct scsi_cmnd *scp, } break; case 0xa: /* Control Mode page, all devices */ - if (subpcode > 0x0 && subpcode < 0xff) + switch (subpcode) { + case 0: + case 0xff: + len = resp_ctrl_m_pg(ap, pcontrol, target); + break; + case 0x05: + len = resp_grouping_m_pg(ap, pcontrol, target); + break; + default: goto bad_subpcode; - len = resp_ctrl_m_pg(ap, pcontrol, target); + } offset += len; break; case 0x19: /* if spc==1 then sas phy, control+discover */ From patchwork Tue Nov 14 21:41:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13456050 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 C4546C4167B for ; Tue, 14 Nov 2023 21:42:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234134AbjKNVmp (ORCPT ); Tue, 14 Nov 2023 16:42:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54534 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234130AbjKNVmg (ORCPT ); Tue, 14 Nov 2023 16:42:36 -0500 Received: from mail-pl1-f182.google.com (mail-pl1-f182.google.com [209.85.214.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5267BFB; Tue, 14 Nov 2023 13:42:26 -0800 (PST) Received: by mail-pl1-f182.google.com with SMTP id d9443c01a7336-1cc53d0030fso2024735ad.0; Tue, 14 Nov 2023 13:42:26 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699998146; x=1700602946; 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=kTU9M4tDmQIbWEc4YNDxclk8bmN1pALqT2vJyD7Eag8=; b=i5bd0+cpfFIt/V6593cb63I8yYzp2r3V5G8syC4LxLgHgmA7Lx0Uyq1jWKlcK9+nOW 9bRz9Hn6GyJ0/MS+MuAlO8XQHRSgScU8oZVKktcYP5iqgyRzvcJC/r2IaERTv7rS9Y0z sC306ovOvXBOMcGvIX+0oyxddxHj24C2xOCO2+LuWpvc+RxcigpsiwQis6vcxPmI6U1h tO1jvQu+lMzj8RoaiJVC0Muf0E6mxssh2f+7dUW/p7IgdJdyAMJNP6E1cWDYwPmNIr5J mNL9QzKdnewEcxXcU6OsFeerIPSQFnNm2U+ceMqcZctBPXQMqsyOCdjBgWKAksFPlE+O h4OA== X-Gm-Message-State: AOJu0YxBTmYHZ0VdRIF02GXFMM+sgiqD6ngTlL7LUwzIiEaisAFC+jmk EfSLTMjW5ms7BqCPvIItCgE= X-Google-Smtp-Source: AGHT+IHOMUHzn5ZM0eQoPjNaTe5xVTqA79xWEjRmhy0EzKGKLUuYtkdbvS4vLJRmJBcOnoQ89fH24g== X-Received: by 2002:a17:902:e891:b0:1c9:e77d:62d3 with SMTP id w17-20020a170902e89100b001c9e77d62d3mr4998248plg.10.1699998145727; Tue, 14 Nov 2023 13:42:25 -0800 (PST) Received: from bvanassche-linux.mtv.corp.google.com ([2620:0:1000:8411:2278:ad72:cefb:4d49]) by smtp.gmail.com with ESMTPSA id o16-20020a170902d4d000b001c3267ae317sm6133926plg.165.2023.11.14.13.42.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Nov 2023 13:42:25 -0800 (PST) From: Bart Van Assche To: "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Daejun Park , Kanchan Joshi , Bart Van Assche , Douglas Gilbert , "James E.J. Bottomley" Subject: [PATCH v4 14/15] scsi_debug: Implement GET STREAM STATUS Date: Tue, 14 Nov 2023 13:41:09 -0800 Message-ID: <20231114214132.1486867-15-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.rc0.421.g78406f8d94-goog In-Reply-To: <20231114214132.1486867-1-bvanassche@acm.org> References: <20231114214132.1486867-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Implement the GET STREAM STATUS SCSI command. Report that the first three stream indexes correspond to permanent streams. Cc: Martin K. Petersen Cc: Douglas Gilbert Signed-off-by: Bart Van Assche --- drivers/scsi/scsi_debug.c | 44 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 43 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 98fa675cbf37..daf64844d6cb 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -532,6 +532,8 @@ static int resp_write_scat(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_start_stop(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_readcap16(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_get_lba_status(struct scsi_cmnd *, struct sdebug_dev_info *); +static int resp_get_stream_status(struct scsi_cmnd *scp, + struct sdebug_dev_info *devip); static int resp_report_tgtpgs(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_unmap(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_rsup_opcodes(struct scsi_cmnd *, struct sdebug_dev_info *); @@ -606,6 +608,9 @@ static const struct opcode_info_t sa_in_16_iarr[] = { {0, 0x9e, 0x12, F_SA_LOW | F_D_IN, resp_get_lba_status, NULL, {16, 0x12, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0xc7} }, /* GET LBA STATUS(16) */ + {0, 0x9e, 0x16, F_SA_LOW | F_D_IN, resp_get_stream_status, NULL, + {16, 0x16, 0, 0, 0xff, 0xff, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, + 0, 0} }, /* GET STREAM STATUS */ }; static const struct opcode_info_t vl_iarr[] = { /* VARIABLE LENGTH */ @@ -2552,7 +2557,7 @@ static int resp_ctrl_m_pg(unsigned char *p, int pcontrol, int target) return sizeof(ctrl_m_pg); } -enum { MAXIMUM_NUMBER_OF_STREAMS = 4 }; +enum { MAXIMUM_NUMBER_OF_STREAMS = 4, PERMANENT_STREAM_COUNT = 3 }; /* IO Advice Hints Grouping mode page */ static int resp_grouping_m_pg(unsigned char *p, int pcontrol, int target) @@ -4547,6 +4552,43 @@ static int resp_get_lba_status(struct scsi_cmnd *scp, return fill_from_dev_buffer(scp, arr, SDEBUG_GET_LBA_STATUS_LEN); } +static int resp_get_stream_status(struct scsi_cmnd *scp, + struct sdebug_dev_info *devip) +{ + u16 starting_stream_id, stream_id; + const u8 *cmd = scp->cmnd; + u32 alloc_len, offset; + u8 arr[256]; + + starting_stream_id = get_unaligned_be16(cmd + 4); + alloc_len = get_unaligned_be32(cmd + 10); + + if (alloc_len < 8) { + mk_sense_invalid_fld(scp, SDEB_IN_CDB, 10, -1); + return check_condition_result; + } + + if (starting_stream_id >= MAXIMUM_NUMBER_OF_STREAMS) { + mk_sense_invalid_fld(scp, SDEB_IN_CDB, 4, -1); + return check_condition_result; + } + + for (offset = 8, stream_id = starting_stream_id; + offset + 8 <= min_t(u32, alloc_len, sizeof(arr)) && + stream_id < MAXIMUM_NUMBER_OF_STREAMS; + offset += 8, stream_id++) { + struct scsi_stream_status *stream_status = (void *)arr + offset; + + stream_status->perm = stream_id < PERMANENT_STREAM_COUNT; + put_unaligned_be16(stream_id, + &stream_status->stream_identifier); + stream_status->rel_lifetime = stream_id + 1; + } + put_unaligned_be32(offset - 8, arr + 0); /* PARAMETER DATA LENGTH */ + + return fill_from_dev_buffer(scp, arr, min(offset, alloc_len)); +} + static int resp_sync_cache(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) { From patchwork Tue Nov 14 21:41:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13456051 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 5E6D3C4167D for ; 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Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Daejun Park , Kanchan Joshi , Bart Van Assche , Douglas Gilbert , "James E.J. Bottomley" Subject: [PATCH v4 15/15] scsi_debug: Maintain write statistics per group number Date: Tue, 14 Nov 2023 13:41:10 -0800 Message-ID: <20231114214132.1486867-16-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.rc0.421.g78406f8d94-goog In-Reply-To: <20231114214132.1486867-1-bvanassche@acm.org> References: <20231114214132.1486867-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Track per GROUP NUMBER how many write commands have been processed. Make this information available in sysfs. Reset these statistics if any data is written into the sysfs attribute. Note: SCSI devices should only interpret the information in the GROUP NUMBER field as a stream identifier if the ST_ENBLE bit has been set to one. This patch follows a simpler approach: count the number of writes per GROUP NUMBER whether or not the group number represents a stream identifier. Cc: Martin K. Petersen Cc: Douglas Gilbert Signed-off-by: Bart Van Assche --- drivers/scsi/scsi_debug.c | 51 ++++++++++++++++++++++++++++++++++++--- 1 file changed, 47 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index daf64844d6cb..47cc3da39076 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -898,6 +898,8 @@ static int sdeb_zbc_nr_conv = DEF_ZBC_NR_CONV_ZONES; static int submit_queues = DEF_SUBMIT_QUEUES; /* > 1 for multi-queue (mq) */ static int poll_queues; /* iouring iopoll interface.*/ +static atomic_long_t writes_by_group_number[64]; + static char sdebug_proc_name[] = MY_NAME; static const char *my_name = MY_NAME; @@ -3351,7 +3353,8 @@ static inline struct sdeb_store_info *devip2sip(struct sdebug_dev_info *devip, /* Returns number of bytes copied or -1 if error. */ static int do_device_access(struct sdeb_store_info *sip, struct scsi_cmnd *scp, - u32 sg_skip, u64 lba, u32 num, bool do_write) + u32 sg_skip, u64 lba, u32 num, bool do_write, + u8 group_number) { int ret; u64 block, rest = 0; @@ -3370,6 +3373,10 @@ static int do_device_access(struct sdeb_store_info *sip, struct scsi_cmnd *scp, return 0; if (scp->sc_data_direction != dir) return -1; + + if (do_write && group_number < ARRAY_SIZE(writes_by_group_number)) + atomic_long_inc(&writes_by_group_number[group_number]); + fsp = sip->storep; block = do_div(lba, sdebug_store_sectors); @@ -3743,7 +3750,7 @@ static int resp_read_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) } } - ret = do_device_access(sip, scp, 0, lba, num, false); + ret = do_device_access(sip, scp, 0, lba, num, false, 0); sdeb_read_unlock(sip); if (unlikely(ret == -1)) return DID_ERROR << 16; @@ -3928,6 +3935,7 @@ static int resp_write_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) { bool check_prot; u32 num; + u8 group = 0; u32 ei_lba; int ret; u64 lba; @@ -3939,11 +3947,13 @@ static int resp_write_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) ei_lba = 0; lba = get_unaligned_be64(cmd + 2); num = get_unaligned_be32(cmd + 10); + group = cmd[14] & 0x3f; check_prot = true; break; case WRITE_10: ei_lba = 0; lba = get_unaligned_be32(cmd + 2); + group = cmd[6] & 0x3f; num = get_unaligned_be16(cmd + 7); check_prot = true; break; @@ -3958,15 +3968,18 @@ static int resp_write_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) ei_lba = 0; lba = get_unaligned_be32(cmd + 2); num = get_unaligned_be32(cmd + 6); + group = cmd[6] & 0x3f; check_prot = true; break; case 0x53: /* XDWRITEREAD(10) */ ei_lba = 0; lba = get_unaligned_be32(cmd + 2); + group = cmd[6] & 0x1f; num = get_unaligned_be16(cmd + 7); check_prot = false; break; default: /* assume WRITE(32) */ + group = cmd[6] & 0x3f; lba = get_unaligned_be64(cmd + 12); ei_lba = get_unaligned_be32(cmd + 20); num = get_unaligned_be32(cmd + 28); @@ -4021,7 +4034,7 @@ static int resp_write_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) } } - ret = do_device_access(sip, scp, 0, lba, num, true); + ret = do_device_access(sip, scp, 0, lba, num, true, group); if (unlikely(scsi_debug_lbp())) map_region(sip, lba, num); /* If ZBC zone then bump its write pointer */ @@ -4073,12 +4086,14 @@ static int resp_write_scat(struct scsi_cmnd *scp, u32 lb_size = sdebug_sector_size; u32 ei_lba; u64 lba; + u8 group; int ret, res; bool is_16; static const u32 lrd_size = 32; /* + parameter list header size */ if (cmd[0] == VARIABLE_LENGTH_CMD) { is_16 = false; + group = cmd[6] & 0x3f; wrprotect = (cmd[10] >> 5) & 0x7; lbdof = get_unaligned_be16(cmd + 12); num_lrd = get_unaligned_be16(cmd + 16); @@ -4089,6 +4104,7 @@ static int resp_write_scat(struct scsi_cmnd *scp, lbdof = get_unaligned_be16(cmd + 4); num_lrd = get_unaligned_be16(cmd + 8); bt_len = get_unaligned_be32(cmd + 10); + group = cmd[14] & 0x3f; if (unlikely(have_dif_prot)) { if (sdebug_dif == T10_PI_TYPE2_PROTECTION && wrprotect) { @@ -4177,7 +4193,8 @@ static int resp_write_scat(struct scsi_cmnd *scp, } } - ret = do_device_access(sip, scp, sg_off, lba, num, true); + ret = do_device_access(sip, scp, sg_off, lba, num, true, + group); /* If ZBC zone then bump its write pointer */ if (sdebug_dev_is_zoned(devip)) zbc_inc_wp(devip, lba, num); @@ -7264,6 +7281,31 @@ static ssize_t tur_ms_to_ready_show(struct device_driver *ddp, char *buf) } static DRIVER_ATTR_RO(tur_ms_to_ready); +static ssize_t group_number_stats_show(struct device_driver *ddp, char *buf) +{ + char *p = buf, *end = buf + PAGE_SIZE; + int i; + + for (i = 0; i < ARRAY_SIZE(writes_by_group_number); i++) + p += scnprintf(p, end - p, "%d %ld\n", i, + atomic_long_read(&writes_by_group_number[i])); + + return p - buf; +} + +static ssize_t group_number_stats_store(struct device_driver *ddp, + const char *buf, + size_t count) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(writes_by_group_number); i++) + atomic_long_set(&writes_by_group_number[i], 0); + + return 0; +} +static DRIVER_ATTR_RW(group_number_stats); + /* Note: The following array creates attribute files in the /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these files (over those found in the /sys/module/scsi_debug/parameters @@ -7310,6 +7352,7 @@ static struct attribute *sdebug_drv_attrs[] = { &driver_attr_cdb_len.attr, &driver_attr_tur_ms_to_ready.attr, &driver_attr_zbc.attr, + &driver_attr_group_number_stats.attr, NULL, }; ATTRIBUTE_GROUPS(sdebug_drv);