lkml.org 
[lkml]   [2016]   [Jun]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 1/3] mm: Don't blindly assign fallback_migrate_page()
On Thu, 16 Jun 2016 23:26:13 +0200 Richard Weinberger <richard@nod.at> wrote:

> While block oriented filesystems use buffer_migrate_page()
> as page migration function other filesystems which don't
> implement ->migratepage() will automatically get fallback_migrate_page()
> assigned. fallback_migrate_page() is not as generic as is should
> be. Page migration is filesystem specific and a one-fits-all function
> is hard to achieve. UBIFS leaned this lection the hard way.
> It uses various page flags and fallback_migrate_page() does not
> handle these flags as UBIFS expected.
>
> To make sure that no further filesystem will get confused by
> fallback_migrate_page() disable the automatic assignment and
> allow filesystems to use this function explicitly if it is
> really suitable.

hm, is there really much point in doing this? I assume it doesn't
actually affect any current filesystems?

[2/3] is of course OK - please add it to the UBIFS tree.

\
 
 \ /
  Last update: 2016-06-17 01:41    [W:0.128 / U:6.072 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site