On Mon, Feb 01, 2016 at 03:10:19PM +0200, Kirill A. Shutemov wrote:

On Sun, Jan 31, 2016 at 11:19:53PM +1100, Matthew Wilcox wrote:

quoted

We were a little sloppy about using PAGE_SIZE instead of PAGE_CACHE_SIZE.

PAGE_CACHE_SIZE is non-sense. It never had any meaning. At least in
upstream. And only leads to confusion on border between vfs and mm.

We should just drop it.

I need to find time at some point to prepare patchset...

I argued in favour of this at last LSFMM and people were ... reluctant.
I think with your map_pages work, the PAGE_CACHE_SIZE idea now has no
potential performance win left.

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