lkml.org 
[lkml]   [2013]   [Mar]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [Xen-devel] [PATCH RFC 12/12] xen-block: implement indirect descriptors
>>> On 04.03.13 at 21:44, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> wrote:
> <nods> 'op' sounds good. With a comment saying it can do all of the
> BLKIF_OPS_..
> except the BLKIF_OP_INDIRECT one. Thought one could in theory chain
> it that way for fun.

In fact I'd like to exclude chaining as well as BLKIF_OP_DISCARD here.
The former should - if useful for anything - be controlled by a
separate feature flag, and the latter is plain pointless to indirect.
And I reckon the same would apply to BLKIF_OP_FLUSH_DISKCACHE
and BLKIF_OP_RESERVED_1 - i.e. it might be better to state that
indirection is only permitted for normal I/O (read/write) ops.

Jan



\
 
 \ /
  Last update: 2013-03-05 10:01    [W:0.093 / U:0.064 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site