From: Roel Kluin <12o3l@tiscali.nl>
To: linux-mm@kvack.org, lkml <linux-kernel@vger.kernel.org>
Subject: [PATCH] pagewalk: don't pte_unmap(NULL) in walk_pte_range()
Date: Wed, 09 Apr 2008 12:08:45 +0200 [thread overview]
Message-ID: <47FC95AD.1070907@tiscali.nl> (raw)
This is right isn't it?
---
Don't pte_unmap a NULL pointer, but the previous.
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;
}
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next reply other threads:[~2008-04-09 10:08 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-09 10:08 Roel Kluin [this message]
2008-04-09 13:30 ` Johannes Weiner
2008-04-10 11:42 ` Roel Kluin
2008-04-10 12:09 ` Andreas Schwab
2008-04-10 14:01 ` [PATCH] Stay below upper pmd boundary on pte range walk Johannes Weiner
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