Re: [PATCH 03/13] filemap: assign current->backing_dev_info in generic_perform_write

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To: Christoph Hellwig <hch@xxxxxx>, Matthew Wilcox <willy@xxxxxxxxxxxxx>
Subject: Re: [PATCH 03/13] filemap: assign current->backing_dev_info in generic_perform_write
From: Damien Le Moal <dlemoal@xxxxxxxxxx>
Date: Mon, 22 May 2023 08:44:15 +0900
Cc: Jens Axboe <axboe@xxxxxxxxx>, Xiubo Li <xiubli@xxxxxxxxxx>, Ilya Dryomov <idryomov@xxxxxxxxx>, Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>, Christian Brauner <brauner@xxxxxxxxxx>, "Theodore Ts'o" <tytso@xxxxxxx>, Jaegeuk Kim <jaegeuk@xxxxxxxxxx>, Chao Yu <chao@xxxxxxxxxx>, Miklos Szeredi <miklos@xxxxxxxxxx>, Andreas Gruenbacher <agruenba@xxxxxxxxxx>, "Darrick J. Wong" <djwong@xxxxxxxxxx>, Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>, Anna Schumaker <anna@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, linux-block@xxxxxxxxxxxxxxx, ceph-devel@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-ext4@xxxxxxxxxxxxxxx, "open list:F2FS FILE SYSTEM" <linux-f2fs-devel@xxxxxxxxxxxxxxxxxxxxx>, cluster-devel@xxxxxxxxxx, linux-xfs@xxxxxxxxxxxxxxx, linux-nfs@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx
In-reply-to: <20230519093521.133226-4-hch@lst.de>
Organization: Western Digital Research
References: <20230519093521.133226-1-hch@lst.de> <20230519093521.133226-4-hch@lst.de>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.10.0

On 5/19/23 18:35, Christoph Hellwig wrote:
> Move the assignment to current->backing_dev_info from the callers into
> generic_perform_write to reduce boiler plate code and reduce the scope
> to just around the page dirtying loop.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>

Reviewed-by: Damien Le Moal <dlemoal@xxxxxxxxxx>

-- 
Damien Le Moal
Western Digital Research

References:
- cleanup the filemap / direct I/O interaction
  - From: Christoph Hellwig
- [PATCH 03/13] filemap: assign current->backing_dev_info in generic_perform_write
  - From: Christoph Hellwig

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