linux-kernel - [PATCH] add page->mapping handling interface [21/35] changes in JBD

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Message-Id: <20070910191506.75a78deb.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Mon, 10 Sep 2007 19:15:06 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	sct@...hat.com, LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"nickpiggin@...oo.com.au" <nickpiggin@...oo.com.au>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>
Subject: [PATCH] add page->mapping handling interface [21/35] changes in JBD


Changes page->mapping handling in JBD

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>

---
 fs/jbd/journal.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Index: test-2.6.23-rc4-mm1/fs/jbd/journal.c
===================================================================
--- test-2.6.23-rc4-mm1.orig/fs/jbd/journal.c
+++ test-2.6.23-rc4-mm1/fs/jbd/journal.c
@@ -1822,7 +1822,7 @@ repeat:
 		jh = bh2jh(bh);
 	} else {
 		if (!(atomic_read(&bh->b_count) > 0 ||
-				(bh->b_page && bh->b_page->mapping))) {
+				(bh->b_page && page_mapping_cache(bh->b_page)))) {
 			printk(KERN_EMERG "%s: bh->b_count=%d\n",
 				__FUNCTION__, atomic_read(&bh->b_count));
 			printk(KERN_EMERG "%s: bh->b_page=%p\n",
@@ -1830,7 +1830,7 @@ repeat:
 			if (bh->b_page)
 				printk(KERN_EMERG "%s: "
 						"bh->b_page->mapping=%p\n",
-					__FUNCTION__, bh->b_page->mapping);
+				 __FUNCTION__, page_mapping_cache(bh->b_page));
 		}
 
 		if (!new_jh) {

-
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