linux-kernel - [PATCH] [3/3] CPA: Remove outdated comment in kernel_map

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Message-Id: <20080201095515.6C9061B416F@basil.firstfloor.org>
Date:	Fri,  1 Feb 2008 10:55:15 +0100 (CET)
From:	Andi Kleen <ak@...e.de>
To:	tglx@...utronix.de, mingo@...e.hu, linux-kernel@...r.kernel.org
Subject: [PATCH] [3/3] CPA: Remove outdated comment in kernel_map_pages and add warning about recursion


Signed-off-by: Andi Kleen <ak@...e.de>

---
 arch/x86/mm/pageattr.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

Index: linux/arch/x86/mm/pageattr.c
===================================================================
--- linux.orig/arch/x86/mm/pageattr.c
+++ linux/arch/x86/mm/pageattr.c
@@ -556,6 +556,7 @@ static int __set_pages_np(struct page *p
 					__pgprot(_PAGE_PRESENT));
 }
 
+/* This function recurses with unknown maximum depth */
 void kernel_map_pages(struct page *page, int numpages, int enable)
 {
 	if (PageHighMem(page))
@@ -571,10 +572,6 @@ void kernel_map_pages(struct page *page,
 	if (!debug_pagealloc_enabled)
 		return;
 
-	/*
-	 * The return value is ignored - the calls cannot fail,
-	 * large pages are disabled at boot time:
-	 */
 	if (enable)
 		__set_pages_p(page, numpages);
 	else
--
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