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Message-ID: <1553269013.65329.147.camel@acm.org>
Subject: Re: Read data to kernel buffer by blkdev_read_iter
From:   Bart Van Assche <bvanassche@acm.org>
To:     Ivan Safonov <insafonov@gmail.com>, linux-block@vger.kernel.org
Date:   Fri, 22 Mar 2019 08:36:53 -0700
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On Fri, 2019-03-22 at 17:57 +-0300, Ivan Safonov wrote:
+AD4 In the previous message I misled you: iov+AF8-iter has ITER+AF8-KVEC type only 
+AD4 if set+AF8-fs(get+AF8-ds()) present before iov+AF8-iter+AF8-init(). In this case 
+AD4 +AF8-without+AF8 IOCB+AF8-DIRECT blkdev+AF8-read+AF8-iter() work fine. With IOCB+AF8-DIRECT 
+AD4 blkdev+AF8-read+AF8-iter() return -EFAULT.

Have you tried to store a physical address in iov+AF8-base instead of a virtual
address?

Bart.