linux-kernel - Re: [PATCH 00/18] new API for FS_IOC_[GS]ETFLAGS/FS_IOC

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Message-ID: <CAJfpegvHFHcCPtyJ+w6uRx+hLH9JAT46WJktF_nez-ZZAria7A@mail.gmail.com>
Date:   Wed, 3 Feb 2021 15:13:29 +0100
From:   Miklos Szeredi <miklos@...redi.hu>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     Miklos Szeredi <mszeredi@...hat.com>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Al Viro <viro@...iv.linux.org.uk>,
        Andreas Dilger <adilger@...ger.ca>,
        Andreas Gruenbacher <agruenba@...hat.com>,
        Christoph Hellwig <hch@....de>,
        "Darrick J . Wong" <djwong@...nel.org>,
        Dave Kleikamp <shaggy@...nel.org>,
        David Sterba <dsterba@...e.com>,
        Jaegeuk Kim <jaegeuk@...nel.org>, Jan Kara <jack@...e.cz>,
        Joel Becker <jlbec@...lplan.org>,
        Matthew Garrett <matthew.garrett@...ula.com>,
        Mike Marshall <hubcap@...ibond.com>,
        Richard Weinberger <richard@....at>,
        Ryusuke Konishi <konishi.ryusuke@...il.com>,
        "Theodore Ts'o" <tytso@....edu>, Tyler Hicks <code@...icks.com>
Subject: Re: [PATCH 00/18] new API for FS_IOC_[GS]ETFLAGS/FS_IOC_FS[GS]ETXATTR

On Wed, Feb 3, 2021 at 2:58 PM Matthew Wilcox <willy@...radead.org> wrote:

> Network filesystems frequently need to use the credentials attached to
> a struct file in order to communicate with the server.  There's no point
> fighting this reality.

IDGI.  Credentials can be taken from the file and from the task.  In
this case every filesystem except cifs looks at task creds. Why are
network filesystem special in this respect?

Thanks,
Miklos