linux-kernel - [RFC][PATCH 2/5] pagemap: use PAGE_MASK/PAGE

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Message-Id: <20070807223301.17F179D5@kernel>
Date:	Tue, 07 Aug 2007 15:33:01 -0700
From:	Dave Hansen <haveblue@...ibm.com>
To:	mpm@...enic.com
Cc:	linux-kernel@...r.kernel.org, serue@...ibm.com,
	Dave Hansen <haveblue@...ibm.com>
Subject: [RFC][PATCH 2/5] pagemap: use PAGE_MASK/PAGE_ALIGN()


Use existing macros (PAGE_MASK/PAGE_ALIGN()) instead of
open-coding them.

Signed-off-by: Dave Hansen <haveblue@...ibm.com>
---

 lxc-dave/fs/proc/task_mmu.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff -puN fs/proc/task_mmu.c~pagemap-use-PAGE_MASK fs/proc/task_mmu.c
--- lxc/fs/proc/task_mmu.c~pagemap-use-PAGE_MASK	2007-08-07 15:30:52.000000000 -0700
+++ lxc-dave/fs/proc/task_mmu.c	2007-08-07 15:30:52.000000000 -0700
@@ -669,9 +669,9 @@ static ssize_t pagemap_read(struct file 
 		goto out;
 
 	ret = -ENOMEM;
-	uaddr = (unsigned long)buf & ~(PAGE_SIZE-1);
+	uaddr = (unsigned long)buf & PAGE_MASK;
 	uend = (unsigned long)(buf + count);
-	pagecount = (uend - uaddr + PAGE_SIZE-1) / PAGE_SIZE;
+	pagecount = (uend - PAGE_ALIGN(uaddr)) / PAGE_SIZE;
 	pages = kmalloc(pagecount * sizeof(struct page *), GFP_KERNEL);
 	if (!pages)
 		goto out_task;
_
-
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