On Wed, Jul 18, 2012 at 08:31:05PM -0600, Liu Bo wrote:

On 07/19/2012 10:05 AM, David Sterba wrote:

[ pagevec vs array ]

Sorry, I see no difference between 16 pages array and pagevec(14 pages), and
I have no idea why ext4 use 16 pages array(maybe historical reasons), but IMO
it is proper and natural to use pagevec to manage pages.

Anyway, either will be ok, but we'd better get Chris's confirmation.

So Chris?

Yeah, the array does sound better, and I would go with 16.  It's a nice
round number. Thanks Dave!

-chris