lkml.org 
[lkml]   [2007]   [Sep]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 24/25] r/o bind mounts: track number of mount writers
As we already say in various messages the percpu counters in here
look rather fishy. I'd recomment to take a look at the per-cpu
superblock counters in XFS as they've been debugged quite well
now and could probably be lifted into a generic library for this
kind of think. The code is mostly in fs/xfs/xfs_mount.c can
can be spotted by beeing under #ifdef HAVE_PERCPU_SB.

It also handles cases like hotplug cpu nicely that this code
seems to work around by always iterating over all possible cpus
which might not be nice on a dual core laptop with a distro kernel
that also has to support big iron.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-09-24 19:57    [W:0.201 / U:0.436 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site