From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx174.postini.com [74.125.245.174]) by kanga.kvack.org (Postfix) with SMTP id CF1546B0033 for ; Mon, 17 Jun 2013 04:20:42 -0400 (EDT) Date: Mon, 17 Jun 2013 10:20:40 +0200 From: Michal Hocko Subject: Re: [PATCH v2 7/7] mm/pgtable: Don't accumulate addr during pgd prepopulate pmd Message-ID: <20130617082040.GC19194@dhcp22.suse.cz> References: <1371345290-19588-1-git-send-email-liwanp@linux.vnet.ibm.com> <1371345290-19588-7-git-send-email-liwanp@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1371345290-19588-7-git-send-email-liwanp@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: Wanpeng Li Cc: Andrew Morton , David Rientjes , "Kirill A. Shutemov" , Fengguang Wu , Rik van Riel , Andrew Shewmaker , Jiri Kosina , Namjae Jeon , Jan Kara , Tejun Heo , linux-mm@kvack.org, linux-kernel@vger.kernel.org On Sun 16-06-13 09:14:50, Wanpeng Li wrote: > The old codes accumulate addr to get right pmd, however, > currently pmds are preallocated and transfered as a parameter, > there is unnecessary to accumulate addr variable any more, this > patch remove it. > > Signed-off-by: Wanpeng Li Reviewed-by: Michal Hocko > --- > arch/x86/mm/pgtable.c | 4 +--- > 1 file changed, 1 insertion(+), 3 deletions(-) > > diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c > index 17fda6a..cb787da 100644 > --- a/arch/x86/mm/pgtable.c > +++ b/arch/x86/mm/pgtable.c > @@ -240,7 +240,6 @@ static void pgd_mop_up_pmds(struct mm_struct *mm, pgd_t *pgdp) > static void pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmds[]) > { > pud_t *pud; > - unsigned long addr; > int i; > > if (PREALLOCATED_PMDS == 0) /* Work around gcc-3.4.x bug */ > @@ -248,8 +247,7 @@ static void pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmds[]) > > pud = pud_offset(pgd, 0); > > - for (addr = i = 0; i < PREALLOCATED_PMDS; > - i++, pud++, addr += PUD_SIZE) { > + for (i = 0; i < PREALLOCATED_PMDS; i++, pud++) { > pmd_t *pmd = pmds[i]; > > if (i >= KERNEL_PGD_BOUNDARY) > -- > 1.8.1.2 > -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org