From: Petr Holasek <pholasek@redhat.com>
Date: Tue, 22 Mar 2011 23:33:05 +0000 (-0700)
Subject: hugetlbfs: correct handling of negative input to /proc/sys/vm/nr_hugepages
X-Git-Tag: v2.6.39-rc1~321
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c033a93c0d961fc7ec5b0872649143e061d97dd4;p=pandora-kernel.git

hugetlbfs: correct handling of negative input to /proc/sys/vm/nr_hugepages

When the user inserts a negative value into /proc/sys/vm/nr_hugepages it
will cause the kernel to allocate as many hugepages as possible and to
then update /proc/meminfo to reflect this.

This changes the behavior so that the negative input will result in
nr_hugepages value being unchanged.

Signed-off-by: Petr Holasek <pholasek@redhat.com>
Signed-off-by: Anton Arapov <anton@redhat.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Acked-by: Eric B Munson <emunson@mgebm.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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