From: David Laight <David.Laight@ACULAB.COM>
To: 'Matthew Wilcox' <willy@infradead.org>,
Lorenzo Stoakes <lstoakes@gmail.com>
Cc: "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: Sun, 19 Mar 2023 22:28:12 +0000 [thread overview]
Message-ID: <63c98c518c1e4bfbb36c5295ba7c959d@AcuMS.aculab.com> (raw)
In-Reply-To: <ZBZ4kLnFz9MEiyhM@casper.infradead.org>
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 *').
David
-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)
next prev parent reply other threads:[~2023-03-19 22:28 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 [this message]
2023-03-20 8:30 ` Lorenzo Stoakes
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