linux-ext4 - Re: [PATCH 10/13] fs: factor out a direct_write

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Message-ID: <20230523160307.GD15391@lst.de>
Date:   Tue, 23 May 2023 18:03:07 +0200
From:   Christoph Hellwig <hch@....de>
To:     Miklos Szeredi <miklos@...redi.hu>
Cc:     Christoph Hellwig <hch@....de>,
        Matthew Wilcox <willy@...radead.org>,
        Jens Axboe <axboe@...nel.dk>, Xiubo Li <xiubli@...hat.com>,
        Ilya Dryomov <idryomov@...il.com>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Christian Brauner <brauner@...nel.org>,
        Theodore Ts'o <tytso@....edu>,
        Jaegeuk Kim <jaegeuk@...nel.org>, Chao Yu <chao@...nel.org>,
        Andreas Gruenbacher <agruenba@...hat.com>,
        "Darrick J. Wong" <djwong@...nel.org>,
        Trond Myklebust <trond.myklebust@...merspace.com>,
        Anna Schumaker <anna@...nel.org>,
        Damien Le Moal <dlemoal@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-block@...r.kernel.org, ceph-devel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
        "open list:F2FS FILE SYSTEM" <linux-f2fs-devel@...ts.sourceforge.net>,
        cluster-devel@...hat.com, linux-xfs@...r.kernel.org,
        linux-nfs@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 10/13] fs: factor out a direct_write_fallback helper

On Mon, May 22, 2023 at 04:19:38PM +0200, Miklos Szeredi wrote:
> > +               ssize_t direct_written, ssize_t buffered_written)
> > +{
> > +       struct address_space *mapping = iocb->ki_filp->f_mapping;
> > +       loff_t pos = iocb->ki_pos, end;
> 
> At this point pos will point after the end of the buffered write (as
> per earlier patches), yes?

Yes.  I'll fix the pos and end calculation.