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[209.85.220.65]) by mx.google.com with SMTPS id a21sor165097pgh.0.2019.07.02.17.42.44 for (Google Transport Security); Tue, 02 Jul 2019 17:42:44 -0700 (PDT) Received-SPF: pass (google.com: domain of minwoo.im.dev@gmail.com designates 209.85.220.65 as permitted sender) client-ip=209.85.220.65; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=dzT2FZTy; spf=pass (google.com: domain of minwoo.im.dev@gmail.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=minwoo.im.dev@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=3+88rqRK28VKisC+37wlmaYyoSMpDKjaXlPRwLTc81A=; b=dzT2FZTy6mtiH9VhpzQzcGg9srgeIi7ULRstbUxhYdbumgVyC/BccJNUTeeqM1JxeU /aJ5Yh18Qhitb2uNCOgrqAJCQJCooh5kppJeFISYa3vTW8w8SZxXSzU3q+z+Y8nFvLFm 7UmoIeMOk9x4NdUuGct6yT4j/uqa59drJqUwOsnG7+WOlDf9pYrCXpOMAb1Ug0jw04yr SAPFSsgeuDtEdJsxFXFieMadb9VHG15xWRp9t7JYXycs9+fXJ9FIhQsAwh+12iAX31ay fdkmhF4pBle4Q3xXpB/fyTvqk4KZ8o4Aea0TaSNKPkeiHJQDb+qfydVF0WnF17USk+zV 1U4A== X-Google-Smtp-Source: APXvYqy4XjIjmrg7EOdGeLB40liOwbHKiGqRa8PnbMoJxGCcXUMnLbqCHk5S0oYvRWhq9TvOZCkYow== X-Received: by 2002:a63:6883:: with SMTP id d125mr34024381pgc.281.1562114563831; Tue, 02 Jul 2019 17:42:43 -0700 (PDT) Received: from localhost ([123.213.206.190]) by smtp.gmail.com with ESMTPSA id p1sm250858pff.74.2019.07.02.17.42.42 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 02 Jul 2019 17:42:43 -0700 (PDT) Date: Wed, 3 Jul 2019 09:42:40 +0900 From: Minwoo Im To: Chaitanya Kulkarni Cc: linux-mm@kvack.org, linux-block@vger.kernel.org, bvanassche@acm.org, axboe@kernel.dk, Minwoo Im Subject: Re: [PATCH 1/5] block: update error message for bio_check_ro() Message-ID: <20190703004240.GA19081@minwoo-desktop> References: <20190701215726.27601-1-chaitanya.kulkarni@wdc.com> <20190701215726.27601-2-chaitanya.kulkarni@wdc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20190701215726.27601-2-chaitanya.kulkarni@wdc.com> User-Agent: Mutt/1.11.4 (2019-03-13) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 19-07-01 14:57:22, Chaitanya Kulkarni wrote: > The existing code in the bio_check_ro() relies on the op_is_write(). > op_is_write() checks for the last bit in the bio_op(). Now that we have > multiple REQ_OP_XXX with last bit set to 1 such as, (from blk_types.h): > > /* write sectors to the device */ > REQ_OP_WRITE = 1, > /* flush the volatile write cache */ > REQ_OP_DISCARD = 3, > /* securely erase sectors */ > REQ_OP_SECURE_ERASE = 5, > /* write the same sector many times */ > REQ_OP_WRITE_SAME = 7, > /* write the zero filled sector many times */ > REQ_OP_WRITE_ZEROES = 9, > > it is hard to understand which bio op failed in the bio_check_ro(). > > Modify the error message in bio_check_ro() to print correct REQ_OP_XXX > with the help of blk_op_str(). > > Signed-off-by: Chaitanya Kulkarni > --- > block/blk-core.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/block/blk-core.c b/block/blk-core.c > index 5d1fc8e17dd1..47c8b9c48a57 100644 > --- a/block/blk-core.c > +++ b/block/blk-core.c > @@ -786,9 +786,9 @@ static inline bool bio_check_ro(struct bio *bio, struct hd_struct *part) > return false; > > WARN_ONCE(1, > - "generic_make_request: Trying to write " > - "to read-only block-device %s (partno %d)\n", > - bio_devname(bio, b), part->partno); > + "generic_make_request: Trying op %s on the " > + "read-only block-device %s (partno %d)\n", > + blk_op_str(op), bio_devname(bio, b), part->partno); Maybe "s/Trying op %s on/Tyring op %s to" just like the previous one? Not a native speaker, though ;) I think it would be better to see the log which holds the exact request operation type in a string. Reviewed-by: Minwoo Im