lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Sun, 8 Nov 2015 14:30:44 +0900
From:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
To:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Cc:	andy.shevchenko@...il.com, julia@...u.dk, joe@...ches.com,
	mhocko@...nel.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tree wide: Use kvfree() than conditional kfree()/vfree()

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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists