From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 28 Nov 2007 19:30:54 -0800 (PST) From: Christoph Lameter Subject: Re: [patch 05/19] Use page_cache_xxx in mm/rmap.c In-Reply-To: <20071129031921.GS119954183@sgi.com> Message-ID: References: <20071129011052.866354847@sgi.com> <20071129011145.414062339@sgi.com> <20071129031921.GS119954183@sgi.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: David Chinner Cc: akpm@linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, Christoph Hellwig , Mel Gorman , William Lee Irwin III , Jens Axboe , Badari Pulavarty , Maxim Levitsky , Fengguang Wu , swin wang , totty.lu@gmail.com, hugh@veritas.com, joern@lazybastard.org List-ID: On Thu, 29 Nov 2007, David Chinner wrote: > > unsigned int mapcount; > > struct address_space *mapping = page->mapping; > > - pgoff_t pgoff = page->index << (PAGE_CACHE_SHIFT - PAGE_SHIFT); > > + pgoff_t pgoff = page->index << (page_cache_shift(mapping) - PAGE_SHIFT); > > Based on the first hunk, shouldn't this be: > > pgoff_t pgoff = page->index << mapping_order(mapping); Yes that is much simpler rmap: simplify page_referenced_file use of page cache inlines Signed-off-by: Christoph Lameter --- mm/rmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: mm/mm/rmap.c =================================================================== --- mm.orig/mm/rmap.c 2007-11-28 19:28:45.689883608 -0800 +++ mm/mm/rmap.c 2007-11-28 19:29:35.090382690 -0800 @@ -350,7 +350,7 @@ static int page_referenced_file(struct p { unsigned int mapcount; struct address_space *mapping = page->mapping; - pgoff_t pgoff = page->index << (page_cache_shift(mapping) - PAGE_SHIFT); + pgoff_t pgoff = page->index << mapping_order(mapping); struct vm_area_struct *vma; struct prio_tree_iter iter; int referenced = 0; -- 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