From: Lorenzo Stoakes <lstoakes@gmail.com>
To: David Laight <David.Laight@aculab.com>
Cc: 'Matthew Wilcox' <willy@infradead.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Baoquan He <bhe@redhat.com>, Uladzislau Rezki <urezki@gmail.com>,
David Hildenbrand <david@redhat.com>,
Liu Shixin <liushixin2@huawei.com>, Jiri Olsa <jolsa@kernel.org>
Subject: Re: [PATCH 4/4] mm: vmalloc: convert vread() to vread_iter()
Date: Mon, 20 Mar 2023 08:30:03 +0000 [thread overview]
Message-ID: <ec321d33-37de-4b0e-bce9-c8539a9b1c5d@lucifer.local> (raw)
In-Reply-To: <63c98c518c1e4bfbb36c5295ba7c959d@AcuMS.aculab.com>
On Sun, Mar 19, 2023 at 10:28:12PM +0000, David Laight wrote:
> From: Matthew Wilcox
> > Sent: 19 March 2023 02:51
> >
> > On Sun, Mar 19, 2023 at 12:20:12AM +0000, Lorenzo Stoakes wrote:
> > > /* for /proc/kcore */
> > > -extern long vread(char *buf, char *addr, unsigned long count);
> > > +extern long vread_iter(char *addr, size_t count, struct iov_iter *iter);
> >
> > I don't love the order of the arguments here. Usually we follow
> > memcpy() and have (dst, src, len). This sometimes gets a bit more
> > complex when either src or dst need two arguments, but that's not the
> > case here.
>
> And, if 'addr' is the source (which Matthew's comment implies)
> it ought to be 'const char *' (or probably even 'const void *').
>
Ack, I'll update on the next respin.
> David
>
> -
> Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
> Registration No: 1397386 (Wales)
>
prev parent reply other threads:[~2023-03-20 8:30 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-19 0:20 [PATCH 0/4] convert read_kcore(), vread() to use iterators Lorenzo Stoakes
2023-03-19 0:20 ` [PATCH 1/4] fs/proc/kcore: Avoid bounce buffer for ktext data Lorenzo Stoakes
2023-03-19 0:20 ` [PATCH 2/4] mm: vmalloc: use rwsem, mutex for vmap_area_lock and vmap_block->lock Lorenzo Stoakes
2023-03-19 0:20 ` [PATCH 3/4] fs/proc/kcore: convert read_kcore() to read_kcore_iter() Lorenzo Stoakes
2023-03-19 0:20 ` [PATCH 4/4] mm: vmalloc: convert vread() to vread_iter() Lorenzo Stoakes
2023-03-19 1:46 ` kernel test robot
2023-03-19 6:08 ` Lorenzo Stoakes
2023-03-19 2:16 ` kernel test robot
2023-03-19 6:03 ` Lorenzo Stoakes
2023-03-19 2:50 ` Matthew Wilcox
2023-03-19 6:16 ` Lorenzo Stoakes
2023-03-19 22:28 ` David Laight
2023-03-20 8:30 ` Lorenzo Stoakes [this message]
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