From: William Lee Irwin III <wli@holomorphy.com>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
Linux Memory Management <linux-mm@kvack.org>,
Hugh Dickins <hugh@veritas.com>,
Badari Pulavarty <pbadari@us.ibm.com>
Subject: Re: [patch][rfc] 2/5: micro optimisation for mm/rmap.c
Date: Thu, 23 Jun 2005 00:26:09 -0700 [thread overview]
Message-ID: <20050623072609.GA3334@holomorphy.com> (raw)
In-Reply-To: <42BA5F7B.30904@yahoo.com.au>
On Thu, Jun 23, 2005 at 05:06:35PM +1000, Nick Piggin wrote:
> + index = (address - vma->vm_start) >> PAGE_SHIFT;
> + index += vma->vm_pgoff;
> + index >>= PAGE_CACHE_SHIFT - PAGE_SHIFT;
> + page->index = index;
linear_page_index()
-- wli
WARNING: multiple messages have this Message-ID (diff)
From: William Lee Irwin III <wli@holomorphy.com>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
Linux Memory Management <linux-mm@kvack.org>,
Hugh Dickins <hugh@veritas.com>,
Badari Pulavarty <pbadari@us.ibm.com>
Subject: Re: [patch][rfc] 2/5: micro optimisation for mm/rmap.c
Date: Thu, 23 Jun 2005 00:26:09 -0700 [thread overview]
Message-ID: <20050623072609.GA3334@holomorphy.com> (raw)
In-Reply-To: <42BA5F7B.30904@yahoo.com.au>
On Thu, Jun 23, 2005 at 05:06:35PM +1000, Nick Piggin wrote:
> + index = (address - vma->vm_start) >> PAGE_SHIFT;
> + index += vma->vm_pgoff;
> + index >>= PAGE_CACHE_SHIFT - PAGE_SHIFT;
> + page->index = index;
linear_page_index()
-- wli
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next prev parent reply other threads:[~2005-06-23 8:28 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-23 7:05 [patch][rfc] 0/5: remove PageReserved Nick Piggin
2005-06-23 7:05 ` Nick Piggin
2005-06-23 7:06 ` [patch][rfc] 1/5: comment for mm/rmap.c Nick Piggin
2005-06-23 7:06 ` [patch][rfc] 2/5: micro optimisation " Nick Piggin
2005-06-23 7:07 ` [patch][rfc] 3/5: remove atomic bitop when freeing page Nick Piggin
2005-06-23 7:07 ` [patch][rfc] 4/5: remap ZERO_PAGE mappings Nick Piggin
2005-06-23 7:08 ` [patch][rfc] 5/5: core remove PageReserved Nick Piggin
2005-06-23 9:51 ` William Lee Irwin III
2005-06-23 9:51 ` William Lee Irwin III
2005-06-23 10:32 ` Nick Piggin
2005-06-23 10:32 ` Nick Piggin
2005-06-23 22:08 ` William Lee Irwin III
2005-06-23 22:08 ` William Lee Irwin III
2005-06-23 23:21 ` Nick Piggin
2005-06-23 23:21 ` Nick Piggin
2005-06-24 0:59 ` William Lee Irwin III
2005-06-24 0:59 ` William Lee Irwin III
2005-06-24 1:17 ` Nick Piggin
2005-06-24 1:17 ` Nick Piggin
2005-06-24 1:47 ` Nick Piggin
2005-06-24 1:47 ` Nick Piggin
2005-06-24 1:25 ` Nick Piggin
2005-06-24 1:25 ` Nick Piggin
2005-06-24 4:50 ` Andrew Morton
2005-06-24 4:50 ` Andrew Morton
2005-06-24 8:24 ` William Lee Irwin III
2005-06-24 8:24 ` William Lee Irwin III
2005-06-26 8:41 ` Nick Piggin
2005-06-26 8:41 ` Nick Piggin
2005-06-23 7:26 ` William Lee Irwin III [this message]
2005-06-23 7:26 ` [patch][rfc] 2/5: micro optimisation for mm/rmap.c William Lee Irwin III
2005-06-23 7:33 ` Nick Piggin
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