[lkml]   [2008]   [Oct]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH, RFC] percpu_counters: make fbc->count read atomic on 32 bit architecture
On Sun, 05 Oct 2008 21:28:10 -0400 "Theodore Ts'o" <> wrote:

> The following patch has been sitting in the ext4 patch queue for about
> six weeks. It was there it was a suspected cause for block allocation
> bug. As I recall, it we found the true root cause since then, but this
> has stuck around since it's a potential problem. Andrew has expressed
> concerns that this patch might have performance impacts.

Performace impacts I guess we'll just have to put up with. iirc I was
thinking that this implementation should be pushed down to a kernel-wide
atomic64_t and then the percpu_counters would just use that type.

 \ /
  Last update: 2008-10-07 08:27    [W:0.057 / U:3.372 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site