From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <47FDFD3C.1030708@tiscali.nl> Date: Thu, 10 Apr 2008 13:42:52 +0200 From: Roel Kluin <12o3l@tiscali.nl> MIME-Version: 1.0 Subject: Re: [PATCH] pagewalk: don't pte_unmap(NULL) in walk_pte_range() References: <47FC95AD.1070907@tiscali.nl> <87zls3qhop.fsf@saeurebad.de> In-Reply-To: <87zls3qhop.fsf@saeurebad.de> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Johannes Weiner Cc: linux-mm@kvack.org, lkml List-ID: Johannes Weiner wrote: > Hi, > > Roel Kluin <12o3l@tiscali.nl> writes: > >> This is right isn't it? >> --- >> Don't pte_unmap a NULL pointer, but the previous. > > Which NULL pointer? > >> Signed-off-by: Roel Kluin <12o3l@tiscali.nl> >> --- >> diff --git a/mm/pagewalk.c b/mm/pagewalk.c >> index 1cf1417..6615f0b 100644 >> --- a/mm/pagewalk.c >> +++ b/mm/pagewalk.c >> @@ -15,7 +15,7 @@ static int walk_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, >> break; >> } while (pte++, addr += PAGE_SIZE, addr != end); >> >> - pte_unmap(pte); >> + pte_unmap(pte - 1); >> return err; >> } > > This does not make any sense to me. you are right, please ignore. > Hannes thanks, Roel -- 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