On Fri, Mar 20, 2020 at 11:24:52AM -0700, Eric Biggers wrote:
> On Fri, Mar 20, 2020 at 11:11:32AM -0700, Matthew Wilcox wrote:
> > On Fri, Mar 20, 2020 at 11:00:17AM -0700, Eric Biggers wrote:
> > > But then if someone passes index=0 and nr_to_read=0, this underflows and
> > > the
> > > entire
On Fri, Mar 20, 2020 at 11:11:32AM -0700, Matthew Wilcox wrote:
> On Fri, Mar 20, 2020 at 11:00:17AM -0700, Eric Biggers wrote:
> > On Fri, Mar 20, 2020 at 10:30:40AM -0700, Matthew Wilcox wrote:
> > > On Fri, Mar 20, 2020 at 09:58:28AM -0700, Eric Biggers wrote:
> > > > On Fri, Mar 20, 2020 at
On Fri, Mar 20, 2020 at 11:00:17AM -0700, Eric Biggers wrote:
> On Fri, Mar 20, 2020 at 10:30:40AM -0700, Matthew Wilcox wrote:
> > On Fri, Mar 20, 2020 at 09:58:28AM -0700, Eric Biggers wrote:
> > > On Fri, Mar 20, 2020 at 07:22:18AM -0700, Matthew Wilcox wrote:
> > > > + /* Avoid wrapping
On Fri, Mar 20, 2020 at 10:30:40AM -0700, Matthew Wilcox wrote:
> On Fri, Mar 20, 2020 at 09:58:28AM -0700, Eric Biggers wrote:
> > On Fri, Mar 20, 2020 at 07:22:18AM -0700, Matthew Wilcox wrote:
> > > + /* Avoid wrapping to the beginning of the file */
> > > + if (index + nr_to_read < index)
> >
On Fri, Mar 20, 2020 at 07:22:18AM -0700, Matthew Wilcox wrote:
> From: "Matthew Wilcox (Oracle)"
>
> By reducing nr_to_read, we can eliminate this check from inside the loop.
>
> Signed-off-by: Matthew Wilcox (Oracle)
> Reviewed-by: John Hubbard
> Reviewed-by: William Kucharski
> ---
>
From: "Matthew Wilcox (Oracle)"
By reducing nr_to_read, we can eliminate this check from inside the loop.
Signed-off-by: Matthew Wilcox (Oracle)
Reviewed-by: John Hubbard
Reviewed-by: William Kucharski
---
mm/readahead.c | 17 +++--
1 file changed, 11 insertions(+), 6
