Re: [PATCH 1/9] readahead: introduce PG_readahead

2007-05-20 Thread Christoph Lameter
On Sun, 20 May 2007, Fengguang Wu wrote: > The reuse code would look like the attached one. > It still needs more testing, and would fail if Christoph reuses > PG_reclaim in higher order pagecache in the future. Do not worry about that. All higher order pagecache patchsets remove that sharing bec

Re: [PATCH 1/9] readahead: introduce PG_readahead

2007-05-19 Thread Fengguang Wu
On Sat, May 19, 2007 at 08:25:04AM -0700, Andrew Morton wrote: > On Sat, 19 May 2007 20:30:31 +0800 Fengguang Wu <[EMAIL PROTECTED]> wrote: > > > On Fri, May 18, 2007 at 11:28:24PM -0700, Andrew Morton wrote: > > > On Thu, 17 May 2007 06:47:53 +0800 Fengguang Wu <[EMAIL PROTECTED]> wrote: > > > >

Re: [PATCH 1/9] readahead: introduce PG_readahead

2007-05-19 Thread Andrew Morton
On Sat, 19 May 2007 20:30:31 +0800 Fengguang Wu <[EMAIL PROTECTED]> wrote: > On Fri, May 18, 2007 at 11:28:24PM -0700, Andrew Morton wrote: > > On Thu, 17 May 2007 06:47:53 +0800 Fengguang Wu <[EMAIL PROTECTED]> wrote: > > > > > Introduce a new page flag: PG_readahead. > > > > Is there any way i

Re: [PATCH 1/9] readahead: introduce PG_readahead

2007-05-19 Thread Fengguang Wu
On Fri, May 18, 2007 at 11:28:24PM -0700, Andrew Morton wrote: > On Thu, 17 May 2007 06:47:53 +0800 Fengguang Wu <[EMAIL PROTECTED]> wrote: > > > Introduce a new page flag: PG_readahead. > > Is there any way in which we can avoid adding a new page flag? > > We have the advantage that if the kern