linux-kernel - Re: [PATCH] fuse: require /dev/fuse reads to have enough buffer capacity (take 2)

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Message-Id: <20190612170259.GA27637@deco.navytux.spb.ru>
Date:   Wed, 12 Jun 2019 17:03:05 +0000
From:   Kirill Smelkov <kirr@...edi.com>
To:     Sander Eikelenboom <linux@...elenboom.it>
Cc:     Miklos Szeredi <mszeredi@...hat.com>,
        Miklos Szeredi <miklos@...redi.hu>,
        <gluster-devel@...ster.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH] fuse: require /dev/fuse reads to have enough buffer capacity (take 2)

On Wed, Jun 12, 2019 at 06:28:17PM +0200, Sander Eikelenboom wrote:
> On 12/06/2019 16:12, Kirill Smelkov wrote:
> > On Wed, Jun 12, 2019 at 03:03:49PM +0200, Sander Eikelenboom wrote:
> >> On 12/06/2019 13:25, Kirill Smelkov wrote:
> >>> On Wed, Jun 12, 2019 at 09:44:49AM +0200, Miklos Szeredi wrote:
> >>>> On Tue, Jun 11, 2019 at 10:28 PM Kirill Smelkov <kirr@...edi.com> wrote:
> >>>>
> >>>>> Miklos, would 4K -> `sizeof(fuse_in_header) + sizeof(fuse_write_in)` for
> >>>>> header room change be accepted?
> >>>>
> >>>> Yes, next cycle.   For 4.2 I'll just push the revert.
> >>>
> >>> Thanks Miklos. Please consider queuing the following patch for 5.3.
> >>> Sander, could you please confirm that glusterfs is not broken with this
> >>> version of the check?
> >>>
> >>> Thanks beforehand,
> >>> Kirill
> >>
> >>
> >> Hmm unfortunately it doesn't build, see below.
> >> [...]
> >> fs/fuse/dev.c:1336:14: error: ‘fuse_in_header’ undeclared (first use in this function)
> >>        sizeof(fuse_in_header) + sizeof(fuse_write_in) + fc->max_write))
> > 
> > Sorry, my bad, it was missing "struct" before fuse_in_header. I
> > originally compile-tested the patch with `make -j4`, was distracted onto
> > other topic and did not see the error after returning due to long tail
> > of successful CC lines. Apologize for the inconvenience. Below is a
> > fixed patch that was both compile-tested and runtime-tested with my FUSE
> > workloads (non-glusterfs).
> > 
> > Kirill
> > 
> 
> Just tested and it works for me, thanks !

Thanks for feedback. Kirill