From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: Minchan Kim <minchan@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@redhat.com>,
x86@kernel.org, Hugh Dickins <hughd@google.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Rik van Riel <riel@redhat.com>, Mel Gorman <mgorman@suse.de>,
kosaki.motohiro@jp.fujitsu.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [RFC] propagate gfp_t to page table alloc functions
Date: Tue, 24 Apr 2012 14:16:50 +0900 [thread overview]
Message-ID: <4F963742.2030607@jp.fujitsu.com> (raw)
In-Reply-To: <1335171318-4838-1-git-send-email-minchan@kernel.org>
(2012/04/23 17:55), Minchan Kim wrote:
> As I test some code, I found a problem about deadlock by lockdep.
> The reason I saw the message is __vmalloc calls map_vm_area which calls
> pud/pmd_alloc without gfp_t. so although we call __vmalloc with
> GFP_ATOMIC or GFP_NOIO, it ends up allocating pages with GFP_KERNEL.
> The should be a BUG. This patch fixes it by passing gfp_to to low page
> table allocate functions.
>
> Signed-off-by: Minchan Kim <minchan@kernel.org>
Hmm ? vmalloc should support GFP_ATOMIC ?
And, do we need to change all pud_,pgd_,pmd_,pte_alloc() for users pgtables ?
Thanks,
-Kame
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2012-04-24 5:18 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-23 8:55 [RFC] propagate gfp_t to page table alloc functions Minchan Kim
2012-04-24 5:16 ` KAMEZAWA Hiroyuki [this message]
2012-04-24 5:35 ` Minchan Kim
2012-04-24 6:13 ` Nick Piggin
2012-04-24 7:19 ` Minchan Kim
2012-04-24 7:48 ` Nick Piggin
2012-04-24 8:01 ` Minchan Kim
2012-04-24 8:05 ` Nick Piggin
2012-04-24 21:30 ` Andrew Morton
2012-04-24 23:49 ` KAMEZAWA Hiroyuki
2012-04-24 23:55 ` KOSAKI Motohiro
2012-04-25 0:05 ` KAMEZAWA Hiroyuki
2012-04-25 0:25 ` Andrew Morton
2012-04-26 0:05 ` KAMEZAWA Hiroyuki
2012-04-26 0:20 ` David Rientjes
2012-04-27 2:24 ` Minchan Kim
2012-04-27 3:08 ` Andrew Morton
2012-04-27 10:43 ` David Rientjes
2012-04-30 1:25 ` Minchan Kim
2012-05-01 7:20 ` Nick Piggin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4F963742.2030607@jp.fujitsu.com \
--to=kamezawa.hiroyu@jp.fujitsu.com \
--cc=akpm@linux-foundation.org \
--cc=hannes@cmpxchg.org \
--cc=hughd@google.com \
--cc=kosaki.motohiro@jp.fujitsu.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mgorman@suse.de \
--cc=minchan@kernel.org \
--cc=mingo@redhat.com \
--cc=riel@redhat.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).