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Tue, 15 Jun 2021 16:28:52 +0000 (GMT) Subject: Re: [PATCH 09/30] mtd_blkdevs: use blk_mq_alloc_disk To: Christoph Hellwig From: Marek Szyprowski Message-ID: <7f98a37c-281c-bff6-6126-a65feadcb6ca@samsung.com> Date: Tue, 15 Jun 2021 18:28:52 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210615155817.GA31047@lst.de> Content-Transfer-Encoding: 7bit Content-Language: en-US X-Brightmail-Tracker: H4sIAAAAAAAAA01Se0xTZxzNd+/tvS1Z8VrZ+o25bKkb2ajA2HR+m0D2MO4mLoaMbVkMBjq4 K4TnWjpASaxIhBEnCBJKGUWQAuPlChXEzgdvWS0YqItAxcEoRAoOeQ4VGPTixn/n9zvnl3PO l4+Pi+6S7vzI2ARWESuLlpAuRGPncq/Xwbu3Qt8p7pOi6vtZJDJoLvFQfmUTgWYGcjB07VEh D1l/NwFU9jAA3dEu8lCj+VcKOXRVAP1S3YGhB7p0EpX3zWFouv48gZ6N+CKr2gOVX7QDdG1Q itrXsgAypZZTKLvkFI6eLq3y0FR3KYXa0q/z0NqTSR56aq/F0EhnNY5ym6cA0vRe5KHThgWA RvUVOFqzzFCowqIj0ZIxF/tIwuhqjjOO3GzAdD+8TTAdbS0U0zLaSjLN2vsU01DpyZinbBjT b1ExY9Z8jMkuvQmYhrITTO69CsD0akoA0zZjJRjTgJoMfPmIi184Gx35A6vwCQh1iZhrWMLi ewRJjpxdajBPZQIBH9J74Jq+yIlFdCWA2m5VJnBZx/MAdua1A26YA7DW1og9v+g4m0dwRAWA mqbqTdVjAIsnOsgN1Q7aH47W9fA2sBstgfZJi1OE0+0CaD+rdhIk7QszpzOdB0I6APbo0pxB CPpN2F7A2b1Ih8G/dRoep9kOuwvGiA0soHfD2eZ+pwanX4NN0z/jHBbDwbFibMMM0lMucF7r 4HG5D8CGqtrNDjvgZJdx8wV2QnPuGYI7OAXgSE8txQ1nAOxP1QBOtR/aep6sR+WvW7wNL131 4dYfw7TMK/jGGtKu8N70di6EK8xpzN9cC2HGaRGn9oDarrr/bFvu9OHZQKLdUk27pY52Sx3t /74XAFEFxKxKGSNnle/FsoneSlmMUhUr9w6Li6kH6z/fvNq1cAVUTj72bgUYH7QCyMclbkIv 5a1QkTBclnyMVcSFKFTRrLIVvMInJGLh1cs1ISJaLktgo1g2nlU8ZzG+wF2N8b/ojlCS6vEM g8fioiFO3275NP5DP0/tzbLe0tKaurb6l3YOCwdXw919tr0furB/KIAJC8rbK04xXKZwkvLf VeD/ZWSYIiEey/+aHTB77JOH7wt+K2V+fCJyaHy4f2Xl3bwjzX+JjxmlwT8dTjq0/I8+LrrR nhJSha96fTd0/MTKs9n0oOU477brS0vuUXq35cIXTEbbJyUniwJnv/WQfmPyPZBsrX/96MTR UteMom3ewbU5r0pVs3sGqaiOyKSUR0mWc3+8IUgd96+DfiLpg8+SrLOK6IQ/s8wnZ0yFZcuJ H1B7E39ssnUG7k4+d+h7ufvwVJmY+S3tRtBt4+fn5Te+ckgIZYTM1xNXKGX/Av4MyY1oBAAA X-Brightmail-Tracker: H4sIAAAAAAAAA02Se0xTZxiH851LLxjcWYFwYC4zdSwGR6Hc/Eq0OGeWE5dNxszINknbwRko l7JeVLYFqg4YyG2UjVpHEQstFiaXThQbVIqgXddqZjcBxxwdjXJTJkyGEhktLuG/X/J7njfv m7wslHMPD2Xtz1XQslxJNpfhh9mfXfsj4q1fr4ujNL0s2DpaxYCdmnYc1rWcx+DscA0Cex+c xKHrJwuATRNCeFP7GIfd9g4mnNKZADzTOoDAu7oSBjT8MofAma5aDC6N8aFL9Ro06D0A9o5s gVeXqwC0HDUwYXXjMRQ+XXiGw2nbaSbsL7mEw+Unkzh86vkBgWODrShU90wDqLmhx2Fx5z8A upuNKFx2zDKh0aFjwIUf1cgOLqVr+4KaUlcDyjbxM0YN9PcxqT63lUH1aEeZlLklnLJP/45Q txxKatxVh1DVp68AytxUSKmHjIC6oWkEVP+sC6MswypGUshHvG0yqVJBb8yUyhXbuR/zYTSP L4C86FgBjx+zNTUhOo4bKdyWTmfvP0jLIoViXuaceQHJc7IPT9VsUoF5Zhlgs0gilhyo/BYr A34sDtEMyEsTndhqsYG0fafCV3MAufRbGWMVeghIy8lyxFsEENtJ91mnDwokuKRn0gG8EEoM skmLbRx4Cw5xDCHP/lXgzQyCT5bNeCexWf6EkHTqvvKtgRFh5NUT3b6hQUQaudhe8px5kbSd GPdtxCZeJx/13PIxKBFP6sxj6Gp+hTw/8/3zHEyOjDcg1YCjXaNr1yjaNYp2jXIKYCYQSCvl ORk5cj5PLsmRK3MzeGnSnC6w8nHdg4vmC0A3+TfPChAWsAKShXID/SPk18Uc/3RJ/ue0TCqS KbNpuRXErdzzDRoalCZdedlchYgfHxXHj40XRMUJ4mO4wf7n6ttEHCJDoqCzaDqPlv3vISx2 qArpLiodnRUl6Yt2V1Ym73FFBK5HghqNh24brIrL8x1FAWHrNzVcnk95o+ndr+vd9h3Hg6OT qx6uO9Di9+WdwdK34/SeT4YP1A2d2vXOYIEO73tgOkLd/OCwhxexoaP/ftu997pS249O8Nxd 0hD1S4lbR9RRhxZl3aXJphlx4IWCcIH+eMW+hNQEJ8YqTLwi3lhjyGquL85IZAsNIWE785Ne tW1uv5i/+czdf+/YPl26LX5sPacpRxMqdoYPDX8o+uxNtFbFdrTmVdQ+mUvZtzdm3V7No13a g3nq+j3qF94HLx/xa2pIp5hZ14QpkVBN2Jwm+5Y/NbXGwnIZfbE4UWPD7rdxMXmmhB+OyuSS /wCAOdbc+gMAAA== X-CMS-MailID: 20210615162854eucas1p12f7975e37d474ac5ffdb532fa21ef58b X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20210615154746eucas1p1321b6f1cf38d21899632e132cf025e61 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20210615154746eucas1p1321b6f1cf38d21899632e132cf025e61 References: <20210602065345.355274-1-hch@lst.de> <20210602065345.355274-10-hch@lst.de> <13b21a07-b7c7-37db-fdc9-77bf174b6f8f@samsung.com> <20210615155817.GA31047@lst.de> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Justin Sanders , Vignesh Raghavendra , Mike Snitzer , "Michael S. Tsirkin" , Jason Wang , virtualization@lists.linux-foundation.org, dm-devel@redhat.com, "Md. Haris Iqbal" , Miquel Raynal , Jack Wang , Tim Waugh , linux-s390@vger.kernel.org, Maxim Levitsky , Richard Weinberger , Bartlomiej Zolnierkiewicz , Christian Borntraeger , xen-devel@lists.xenproject.org, Ilya Dryomov , Vasily Gorbik , Alex Dubov , Konrad Rzeszutek Wilk , Heiko Carstens , Josef Bacik , Denis Efremov , nbd@other.debian.org, linux-block@vger.kernel.org, ceph-devel@vger.kernel.org, Jens Axboe , Geoff Levand , linux-mmc@vger.kernel.org, linux-mtd@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Hi Christoph, On 15.06.2021 17:58, Christoph Hellwig wrote: > On Tue, Jun 15, 2021 at 05:47:44PM +0200, Marek Szyprowski wrote: >> On 02.06.2021 08:53, Christoph Hellwig wrote: >>> Use the blk_mq_alloc_disk API to simplify the gendisk and request_queue >>> allocation. >>> >>> Signed-off-by: Christoph Hellwig >> This patch landed in linux-next as commit 6966bb921def ("mtd_blkdevs: >> use blk_mq_alloc_disk"). It causes the following regression on my QEMU >> arm64 setup: > Please try the patch below: > > diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c > index 5dc4c966ea73..6ce4bc57f919 100644 > --- a/drivers/mtd/mtd_blkdevs.c > +++ b/drivers/mtd/mtd_blkdevs.c > @@ -382,6 +382,7 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new) > } > > new->disk = gd; > + new->rq = new->disk->queue; > gd->private_data = new; > gd->major = tr->major; > gd->first_minor = (new->devnum) << tr->part_bits; Right, this fixes the issue, thanks. Feel free to add: Reported-by: Marek Szyprowski Tested-by: Marek Szyprowski Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland