lkml.org 
[lkml]   [2012]   [Dec]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2 2/3] mm: Update file times when inodes are written after mmaped writes
On Fri, Dec 21, 2012 at 01:28:27PM -0800, Andy Lutomirski wrote:
> The onus is currently on filesystems to call file_update_time
> somewhere in the page_mkwrite path. This is unfortunate for three
> reasons:
>
> 1. page_mkwrite on a locked page should be fast. ext4, for example,
> often sleeps while dirtying inodes. (This could be considered a
> fixable problem with ext4, but this approach makes it
> irrelevant.)

Hi Andy,

Out of curiosity, could you please share more detailed information about
how to reproduce and measure this problem in ext4?

Thanks
- Zheng


\
 
 \ /
  Last update: 2012-12-24 10:01    [W:0.079 / U:0.192 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site