On Fri, May 01, 2020 at 03:06:26PM +, Luis Chamberlain wrote:
> On Wed, Apr 29, 2020 at 11:49:37AM +0200, Greg KH wrote:
> > On Wed, Apr 29, 2020 at 07:46:26AM +, Luis Chamberlain wrote:
> > > diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
> > > index 5c52976bd762..383045f67
On Fri, May 1, 2020 at 9:40 AM Luis Chamberlain wrote:
>
> On Fri, May 01, 2020 at 08:34:23AM -0700, Christoph Hellwig wrote:
> > On Fri, May 01, 2020 at 03:06:26PM +, Luis Chamberlain wrote:
> > > > You have access to a block device here, please use dev_warn() instead
> > > > here for that, t
On Fri, May 01, 2020 at 08:34:23AM -0700, Christoph Hellwig wrote:
> On Fri, May 01, 2020 at 03:06:26PM +, Luis Chamberlain wrote:
> > > You have access to a block device here, please use dev_warn() instead
> > > here for that, that makes it obvious as to what device a "concurrent
> > > blktrac
On Fri, May 01, 2020 at 03:06:26PM +, Luis Chamberlain wrote:
> > You have access to a block device here, please use dev_warn() instead
> > here for that, that makes it obvious as to what device a "concurrent
> > blktrace" was attempted for.
>
> The block device may be empty, one example is fo
On Wed, Apr 29, 2020 at 11:49:37AM +0200, Greg KH wrote:
> On Wed, Apr 29, 2020 at 07:46:26AM +, Luis Chamberlain wrote:
> > diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
> > index 5c52976bd762..383045f67cb8 100644
> > --- a/kernel/trace/blktrace.c
> > +++ b/kernel/trace/blktra
On Wed, Apr 29, 2020 at 07:46:26AM +, Luis Chamberlain wrote:
> We use one blktrace per request_queue, that means one per the entire
> disk. So we cannot run one blktrace on say /dev/vda and then /dev/vda1,
> or just two calls on /dev/vda.
>
> We check for concurrent setup only at the very en
We use one blktrace per request_queue, that means one per the entire
disk. So we cannot run one blktrace on say /dev/vda and then /dev/vda1,
or just two calls on /dev/vda.
We check for concurrent setup only at the very end of the blktrace setup though.
If we try to run two concurrent blktraces o
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