lkml.org 
[lkml]   [2010]   [Jun]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 3/6] writeback: Add tracing to write_cache_pages
On Fri, Jun 04, 2010 at 09:55:25AM +1000, Dave Chinner wrote:
> Add a trace event to the ->writepage loop in write_cache_pages to give
> visibility into how the ->writepage call is changing variables within the
> writeback control structure. Of most interest is how wbc->nr_to_write changes
> from call to call, especially with filesystems that write multiple pages
> in ->writepage.

Looks good, it might be worth to add another tracepoint for ->writepage
from reclaim context so that we can start investigating the cases where
that happens far too often.

Reviewed-by: Christoph Hellwig <hch@lst.de>


\
 
 \ /
  Last update: 2010-06-04 09:53    [W:0.117 / U:0.032 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site