From: Eric Dumazet <eric.dumazet@gmail.com>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: mhocko@kernel.org, linux-mm@kvack.org,
Mel Gorman <mgorman@suse.de>, Jiri Bohac <jbohac@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>,
"David S. Miller" <davem@davemloft.net>,
LKML <linux-kernel@vger.kernel.org>,
netdev@vger.kernel.org, Michal Hocko <mhocko@suse.com>
Subject: Re: [PATCH] mm: make page pfmemalloc check more robust
Date: Thu, 13 Aug 2015 07:40:56 -0700 [thread overview]
Message-ID: <1439476856.7960.8.camel@edumazet-glaptop2.roam.corp.google.com> (raw)
In-Reply-To: <55CC5FA0.300@suse.cz>
On Thu, 2015-08-13 at 11:13 +0200, Vlastimil Babka wrote:
> Given that this apparently isn't the first case of this localhost issue,
> I wonder if network code should just clear skb->pfmemalloc during send
> (or maybe just send over localhost). That would be probably easier than
> distinguish the __skb_fill_page_desc() callers for send vs receive.
Would this still needed after this patch ?
It is sad we do not have a SNMP counter to at least count how often we
drop skb because pfmemalloc is set.
I'll provide such a patch.
next prev parent reply other threads:[~2015-08-13 14:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-13 8:58 [PATCH] mm: make page pfmemalloc check more robust mhocko
2015-08-13 9:13 ` Vlastimil Babka
2015-08-13 9:31 ` Michal Hocko
2015-08-13 14:40 ` Eric Dumazet [this message]
2015-08-14 13:26 ` Vlastimil Babka
2015-08-13 10:00 ` Mel Gorman
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