lkml.org 
[lkml]   [2021]   [Jun]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v12 11/33] mm/lru: Add folio LRU functions
On Tue, Jun 22, 2021 at 12:40:56PM +0100, Matthew Wilcox (Oracle) wrote:
> Handle arbitrary-order folios being added to the LRU. By definition,
> all pages being added to the LRU were already head or base pages,
> so define page wrappers around folio functions where the original
> page functions involved calling compound_head() to manipulate flags,
> but define folio wrappers around page functions where there's no need to
> call compound_head(). The one thing that does change for those functions
> is calling compound_nr() instead of thp_nr_pages(), in order to handle
> arbitrary-sized folios.
>
> Saves 783 bytes of kernel text; no functions grow.
>
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
> Reviewed-by: Yu Zhao <yuzhao@google.com>
> Reviewed-by: Christoph Hellwig <hch@lst.de>
> Reviewed-by: David Howells <dhowells@redhat.com>

Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>

--
Kirill A. Shutemov

\
 
 \ /
  Last update: 2021-06-28 14:41    [W:0.345 / U:0.112 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site