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Message-ID: <1417041526.16355.7.camel@perches.com>
Subject: Re: [patch] fs, seq_file: fallback to vmalloc instead of oom kill
 processes
From: Joe Perches <joe@perches.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: David Rientjes <rientjes@google.com>,
        Heiko Carstens <heiko.carstens@de.ibm.com>,
        Christoph Hellwig <hch@infradead.org>,
        Al Viro <viro@zeniv.linux.org.uk>, linux-kernel@vger.kernel.org
Date: Wed, 26 Nov 2014 14:38:46 -0800
In-Reply-To: <20141126142404.bc6b03387d5e869908db5e38@linux-foundation.org>
References: <alpine.DEB.2.10.1411261415500.13014@chino.kir.corp.google.com>
	 <20141126142404.bc6b03387d5e869908db5e38@linux-foundation.org>
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On Wed, 2014-11-26 at 14:24 -0800, Andrew Morton wrote:
> There are eleventy billion places where we do the open coded
> kmalloc-or-vmalloc thing.  Sigh.  Perhaps it is time to add a helper
> function which does this, so that all such callers use
> __GFP_NO_OOM_KILL.

That would go along nicely with kvfree() in mm/util.c

void kvfree(const void *addr)
{
	if (is_vmalloc_addr(addr))
		vfree(addr);
	else
		kfree(addr);
}
EXPORT_SYMBOL(kvfree);