From: Dave Hansen <dave.hansen@intel.com>
To: Colin Cross <ccross@android.com>
Cc: linux-kernel@vger.kernel.org,
Kyungmin Park <kmpark@infradead.org>,
Christoph Hellwig <hch@infradead.org>,
John Stultz <john.stultz@linaro.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Pekka Enberg <penberg@kernel.org>, Rob Landley <rob@landley.net>,
Andrew Morton <akpm@linux-foundation.org>,
Cyrill Gorcunov <gorcunov@openvz.org>,
David Rientjes <rientjes@google.com>,
Davidlohr Bueso <dave@gnu.org>, Kees Cook <keescook@chromium.org>,
Al Viro <viro@zeniv.linux.org.uk>,
Hugh Dickins <hughd@google.com>, Mel Gorman <mgorman@suse.de>,
Michel Lespinasse <walken@google.com>,
Rik van Riel <riel@redhat.com>,
Konstantin Khlebnikov <khlebnikov@openvz.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
David Howells <dhowells@redhat.com>,
Arnd Bergmann <arnd@arndb.de>, Dave Jones <davej@redhat.com>,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Oleg Nesterov <oleg@redhat.com>, Shaohua Li <shli@fusionio.com>,
Sasha Levin <sasha.levin@oracle.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Ingo Molnar <mingo@kernel.org>,
linux-doc@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH 2/2] mm: add a field to store names for private anonymous memory
Date: Thu, 11 Jul 2013 23:36:45 -0700 [thread overview]
Message-ID: <51DFA3FD.2020201@intel.com> (raw)
In-Reply-To: <1373596462-27115-2-git-send-email-ccross@android.com>
On 07/11/2013 07:34 PM, Colin Cross wrote:
> + pages_pinned = get_user_pages(current, mm, page_start_vaddr,
> + 1, 0, 0, &page, NULL);
> + if (pages_pinned < 1) {
> + seq_puts(m, "<fault>]");
> + return;
> + }
> +
> + kaddr = (const char *)kmap(page);
> + len = min(max_len, PAGE_SIZE - page_offset);
> + write_len = strnlen(kaddr + page_offset, len);
> + seq_write(m, kaddr + page_offset, write_len);
> + kunmap(page);
> + put_page(page);
This looks a bit like access_process_vm()? Can you perhaps use it here?
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next prev parent reply other threads:[~2013-07-12 6:37 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-12 2:34 [PATCH 1/2] mm: rearrange madvise code to allow for reuse Colin Cross
2013-07-12 2:34 ` [PATCH 2/2] mm: add a field to store names for private anonymous memory Colin Cross
2013-07-12 5:39 ` Pekka Enberg
2013-07-12 8:13 ` Peter Zijlstra
2013-07-12 8:17 ` Peter Zijlstra
2013-07-12 8:44 ` Ingo Molnar
2013-07-12 8:55 ` Pekka Enberg
2013-07-12 9:00 ` Peter Zijlstra
2013-07-12 9:15 ` Ingo Molnar
2013-07-12 9:27 ` Peter Zijlstra
2013-07-12 9:40 ` Ingo Molnar
2013-07-12 9:49 ` Peter Zijlstra
2013-07-12 10:01 ` Ingo Molnar
2013-07-12 20:51 ` Colin Cross
2013-09-26 1:24 ` Colin Cross
2013-07-12 8:21 ` Pekka Enberg
2013-07-12 8:55 ` Peter Zijlstra
2013-07-12 9:04 ` Pekka Enberg
2013-07-12 9:14 ` Peter Zijlstra
2013-07-12 9:28 ` Ingo Molnar
2013-07-12 9:26 ` Ingo Molnar
2013-07-12 9:38 ` Pekka Enberg
2013-07-12 9:45 ` Ingo Molnar
2013-07-12 10:09 ` Peter Zijlstra
2013-07-12 5:43 ` Pekka Enberg
2013-07-12 6:18 ` Colin Cross
2013-07-12 7:03 ` Pekka Enberg
2013-07-12 6:36 ` Dave Hansen [this message]
2013-07-12 6:42 ` Colin Cross
2013-07-14 14:11 ` Oleg Nesterov
2013-07-14 19:27 ` Colin Cross
2013-07-14 14:17 ` Oleg Nesterov
2013-07-14 19:34 ` Colin Cross
-- strict thread matches above, loose matches on Subject: below --
2013-10-15 1:31 [PATCHv3 1/2] mm: rearrange madvise code to allow for reuse Colin Cross
2013-10-15 1:31 ` [PATCH 2/2] mm: add a field to store names for private anonymous memory Colin Cross
2013-10-15 1:31 ` Colin Cross
2013-10-15 21:21 ` Andrew Morton
2013-10-15 21:32 ` Dave Hansen
2013-10-15 21:47 ` Colin Cross
2013-10-15 21:47 ` Colin Cross
2013-10-16 0:33 ` Minchan Kim
2013-10-16 20:00 ` Colin Cross
2013-10-16 20:34 ` Dave Hansen
2013-10-16 20:41 ` Colin Cross
2013-10-17 2:47 ` Minchan Kim
2013-10-30 21:15 ` Colin Cross
2013-11-01 1:30 ` Minchan Kim
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