[lkml]   [2019]   [Apr]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [RFC 0/2] guarantee natural alignment for kmalloc()
On Fri, Apr 05, 2019 at 07:11:17PM +0200, Vlastimil Babka wrote:
> On 3/22/19 6:52 PM, Christopher Lameter wrote:
> > On Thu, 21 Mar 2019, Vlastimil Babka wrote:
> >
> >> That however doesn't work well for the xfs/IO case where block sizes are
> >> not known in advance:
> >>
> >>
> >
> > I thought we agreed to use custom slab caches for that?
> Hm maybe I missed something but my impression was that xfs/IO folks would have
> to create lots of them for various sizes not known in advance, and that it
> wasn't practical and would welcome if kmalloc just guaranteed the alignment.
> But so far they haven't chimed in here in this thread, so I guess I'm wrong.

Yes, in XFS we might have quite a few. Never mind all the other
block level consumers that might have similar reasonable expectations
but haven't triggered the problematic drivers yet.

 \ /
  Last update: 2019-04-07 10:01    [W:0.103 / U:0.124 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site