[lkml]   [2019]   [Mar]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 0/8]: blk-mq: use static_rqs to iterate busy tags
On Fri, Mar 15, 2019 at 10:20:20AM +0100, Christoph Hellwig wrote:
> On Fri, Mar 15, 2019 at 04:57:36PM +0800, Jianchao Wang wrote:
> > Hi Jens
> >
> > As we know, there is a risk of accesing stale requests when iterate
> > in-flight requests with tags->rqs[] and this has been talked in following
> > thread,
> > [1]
> > [2]
> I'd rather take one step back and figure out why we are iterating
> the busy requests. There really shouldn't be any reason why a driver
> is even doings that (vs some error handling helpers in the core
> block code that can properly synchronize).

I use it in NBD to error out any pending requests for forced disconnects. I'd
be happy to use some other blessed interface, I'm not married to this one.


 \ /
  Last update: 2019-03-15 14:30    [W:0.342 / U:0.984 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site