linux-kernel - Re: [RFC PATCH 1/3] fs: define new read

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Date:   Thu, 28 Sep 2017 08:51:30 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     Mimi Zohar <zohar@...ux.vnet.ibm.com>,
        LSM List <linux-security-module@...r.kernel.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        linux-integrity@...r.kernel.org,
        Christoph Hellwig <hch@...radead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Jan Kara <jack@...e.cz>, "Theodore Ts'o" <tytso@....edu>
Subject: Re: [RFC PATCH 1/3] fs: define new read_iter rwf flag

On Thu, Sep 28, 2017 at 6:54 AM, Matthew Wilcox <willy@...radead.org> wrote:
>
> I don't like adding a bool parameter everywhere.  Why not add a flag
> to the kiocb ki_flags?
>
> #define IOCB_RWSEM_HELD         (1 << 8)

Yeah, I think that would be a nicer approach, with filesystems that
don't care being able to just ignore it entirely.

                     Linus