lkml.org 
[lkml]   [2021]   [Aug]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v14 062/138] mm/migrate: Add folio_migrate_copy()
On Thu, Aug 12, 2021 at 01:56:24PM +0200, Vlastimil Babka wrote:
> On 7/15/21 5:35 AM, Matthew Wilcox (Oracle) wrote:
> > This is the folio equivalent of migrate_page_copy(), which is retained
> > as a wrapper for filesystems which are not yet converted to folios.
> > Also convert copy_huge_page() to folio_copy().
> >
> > Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
>
> Acked-by: Vlastimil Babka <vbabka@suse.cz>
>
> The way folio_copy() avoids cond_resched() for single page would IMHO deserve a
> comment though, so it's not buried only in this thread.

I think folio_copy() deserves kernel-doc.

/**
* folio_copy - Copy the contents of one folio to another.
* @dst: Folio to copy to.
* @src: Folio to copy from.
*
* The bytes in the folio represented by @src are copied to @dst.
* Assumes the caller has validated that @dst is at least as large as @src.
* Can be called in atomic context for order-0 folios, but if the folio is
* larger, it may sleep.
*/

\
 
 \ /
  Last update: 2021-08-13 06:17    [W:0.188 / U:0.612 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site