linux-kernel - Re: [PATCH -V6 03/14] hugetlbfs: Add an inline helper for finding hstate index

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Message-ID: <20120527200757.GA7631@skywalker.linux.vnet.ibm.com>
Date:	Mon, 28 May 2012 01:37:57 +0530
From:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
To:	David Rientjes <rientjes@...gle.com>
Cc:	linux-mm@...ck.org, mgorman@...e.de,
	kamezawa.hiroyu@...fujitsu.com, dhillf@...il.com,
	aarcange@...hat.com, mhocko@...e.cz, akpm@...ux-foundation.org,
	hannes@...xchg.org, linux-kernel@...r.kernel.org,
	cgroups@...r.kernel.org
Subject: Re: [PATCH -V6 03/14] hugetlbfs: Add an inline helper for finding
 hstate index

On Thu, May 24, 2012 at 02:22:27PM -0700, David Rientjes wrote:
> On Mon, 16 Apr 2012, Aneesh Kumar K.V wrote:
> 
> > From: "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
> > 
> > Add an inline helper and use it in the code.
> > 
> > Acked-by: Michal Hocko <mhocko@...e.cz>
> > Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> > Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@...ux.vnet.ibm.com>
> 
> I like the helper function, but you missed using it in 
> hugetlb_init().
> 

Will do this as an add on patc on top

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 4b90dd5..58eead5 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1891,7 +1891,7 @@ static int __init hugetlb_init(void)
 		if (!size_to_hstate(default_hstate_size))
 			hugetlb_add_hstate(HUGETLB_PAGE_ORDER);
 	}
-	default_hstate_idx = size_to_hstate(default_hstate_size) - hstates;
+	default_hstate_idx = hstate_index(size_to_hstate(default_hstate_size));
 	if (default_hstate_max_huge_pages)
 		default_hstate.max_huge_pages = default_hstate_max_huge_pages;
 

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