From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
To: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: andy.shevchenko@gmail.com, julia@diku.dk, joe@perches.com,
mhocko@kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] tree wide: Use kvfree() than conditional kfree()/vfree()
Date: Sun, 8 Nov 2015 14:30:44 +0900 [thread overview]
Message-ID: <20151108053044.GA540@swordfish> (raw)
In-Reply-To: <201511081404.HGJ65681.LOSJFOtMFOVHFQ@I-love.SAKURA.ne.jp>
On (11/08/15 14:04), Tetsuo Handa wrote:
[..]
> Also, we might want to add a helper that does vmalloc() when
> kmalloc() failed because locations that do
>
> ptr = kmalloc(size, GFP_NOFS);
> if (!ptr)
> ptr = vmalloc(size); /* Wrong because GFP_KERNEL is used implicitly */
>
> are found.
ext4 does something like that.
void *ext4_kvmalloc(size_t size, gfp_t flags)
{
void *ret;
ret = kmalloc(size, flags | __GFP_NOWARN);
if (!ret)
ret = __vmalloc(size, flags, PAGE_KERNEL);
return ret;
}
-ss
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next prev parent reply other threads:[~2015-11-08 5:32 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-07 11:44 Tetsuo Handa
2015-11-07 18:12 ` Joe Perches
2015-11-07 20:05 ` Andy Shevchenko
2015-11-07 20:13 ` Andy Shevchenko
2015-11-08 5:04 ` Tetsuo Handa
2015-11-08 5:30 ` Sergey Senozhatsky [this message]
2015-11-08 20:11 ` Andy Shevchenko
2015-11-09 10:48 ` Michal Hocko
2015-11-09 11:56 Tetsuo Handa
2015-11-09 12:11 ` Jan Kara
2015-11-09 16:26 ` David Miller
2015-11-09 16:07 ` Russell King - ARM Linux
2015-11-09 20:41 ` Dilger, Andreas
2015-11-09 21:48 ` Rafael J. Wysocki
2015-11-09 23:25 ` Luck, Tony
2015-11-19 0:23 ` David Rientjes
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