From: Uladzislau Rezki <urezki@gmail.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: Uladzislau Rezki <urezki@gmail.com>,
Joel Fernandes <joel@joelfernandes.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
rcu@vger.kernel.org, willy@infradead.org, peterz@infradead.org,
neilb@suse.com, vbabka@suse.cz, mgorman@suse.de,
Andrew Morton <akpm@linux-foundation.org>,
Josh Triplett <josh@joshtriplett.org>,
Lai Jiangshan <jiangshanlai@gmail.com>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
"Paul E. McKenney" <paulmck@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>
Subject: Re: [PATCH RFC] rcu/tree: Use GFP_MEMALLOC for alloc memory to free memory pattern
Date: Wed, 1 Apr 2020 14:32:30 +0200 [thread overview]
Message-ID: <20200401123230.GB32593@pc636> (raw)
In-Reply-To: <20200401070958.GB22681@dhcp22.suse.cz>
On Wed, Apr 01, 2020 at 09:09:58AM +0200, Michal Hocko wrote:
> On Tue 31-03-20 18:12:15, Uladzislau Rezki wrote:
> > >
> > > __GFP_ATOMIC | __GFP_HIGH is the way to get an additional access to
> > > memory reserves regarless of the sleeping status.
> > >
> > Michal, just one question here regarding proposed flags. Can we also
> > tight it with __GFP_RETRY_MAYFAIL flag? Means it also can repeat a few
> > times in order to increase the chance of being success.
>
> yes, __GFP_RETRY_MAYFAIL is perfectly valid with __GFP_ATOMIC. Please
> note that __GFP_ATOMIC, despite its name, doesn't imply an atomic
> allocation which cannot sleep. Quite confusing, I know. A much better
> name would be __GFP_RESERVES or something like that.
>
OK. Then we can use GFP_ATOMIC | __GFP_RETRY_MAYFAIL to try in more harder
way.
Thanks!
--
Vlad Rezki
next prev parent reply other threads:[~2020-04-01 12:32 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-31 13:16 [PATCH RFC] rcu/tree: Use GFP_MEMALLOC for alloc memory to free memory pattern Joel Fernandes (Google)
2020-03-31 14:04 ` Uladzislau Rezki
2020-03-31 15:09 ` Joel Fernandes
2020-03-31 16:01 ` Uladzislau Rezki
2020-03-31 17:02 ` Uladzislau Rezki
2020-03-31 17:49 ` Paul E. McKenney
2020-03-31 18:30 ` Joel Fernandes
2020-04-01 12:25 ` Uladzislau Rezki
2020-04-01 13:47 ` Paul E. McKenney
2020-04-01 18:16 ` Uladzislau Rezki
2020-04-01 18:26 ` Paul E. McKenney
2020-04-01 18:37 ` Uladzislau Rezki
2020-04-01 18:54 ` Paul E. McKenney
2020-04-01 19:05 ` Uladzislau Rezki
2020-04-01 19:34 ` Paul E. McKenney
2020-04-01 19:35 ` Uladzislau Rezki
2020-03-31 14:58 ` Joel Fernandes
2020-03-31 15:34 ` Michal Hocko
2020-03-31 16:01 ` Joel Fernandes
2020-03-31 22:19 ` NeilBrown
2020-04-01 3:25 ` Joel Fernandes
2020-04-01 4:52 ` NeilBrown
2020-04-01 7:23 ` Michal Hocko
2020-04-01 11:14 ` joel
2020-04-01 12:05 ` Michal Hocko
2020-04-01 13:14 ` Mel Gorman
2020-04-01 14:45 ` Joel Fernandes
2020-03-31 16:12 ` Uladzislau Rezki
2020-04-01 7:09 ` Michal Hocko
2020-04-01 12:32 ` Uladzislau Rezki [this message]
2020-04-01 12:55 ` Michal Hocko
2020-04-01 13:08 ` Uladzislau Rezki
2020-04-01 13:15 ` Michal Hocko
2020-04-01 13:22 ` Uladzislau Rezki
2020-04-01 15:28 ` Michal Hocko
2020-04-01 15:46 ` Uladzislau Rezki
2020-04-01 15:57 ` Paul E. McKenney
2020-04-01 16:10 ` Michal Hocko
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