linux-kernel - Re: [PATCH v2] loop: fix zero sized loop for block special file

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Message-Id: <175612966482.55174.12405819858243003502.b4-ty@kernel.dk>
Date: Mon, 25 Aug 2025 07:47:44 -0600
From: Jens Axboe <axboe@...nel.dk>
To: ming.lei@...hat.com, hch@...radead.org, yukuai3@...wei.com, 
 rajeevm@....com, Yu Kuai <yukuai1@...weicloud.com>
Cc: linux-block@...r.kernel.org, linux-kernel@...r.kernel.org, 
 yi.zhang@...wei.com, yangerkun@...wei.com, johnny.chenyi@...wei.com
Subject: Re: [PATCH v2] loop: fix zero sized loop for block special file


On Mon, 25 Aug 2025 17:32:05 +0800, Yu Kuai wrote:
> By default, /dev/sda is block specail file from devtmpfs, getattr will
> return file size as zero, causing loop failed for raw block device.
> 
> We can add bdev_statx() to return device size, however this may introduce
> changes that are not acknowledged by user. Fix this problem by reverting
> changes for block special file, file mapping host is set to bdev inode
> while opening, and use i_size_read() directly to get device size.
> 
> [...]

Applied, thanks!

[1/1] loop: fix zero sized loop for block special file
      commit: d14469ed7c00314fe8957b2841bda329e4eaf4ab

Best regards,
-- 
Jens Axboe