zfs locking

[Johan Hendriks]

Slawa Olhovchenkov schreef:
> On Tue, Jan 14, 2014 at 04:03:35PM +0200, Andriy Gapon wrote:
>
>> on 14/01/2014 15:36 Slawa Olhovchenkov said the following:
>>>                                  DTRACE_PROBE2(l2arc__read, vdev_t *, vd,
>>>                                      zio_t *, rzio);
>>>                                  ARCSTAT_INCR(arcstat_l2_read_bytes, // arc_read+2137
>>>                                      hdr->b_l2hdr->b_asize);
>>>
>>>                                  if (*arc_flags & ARC_NOWAIT) {
>>>                                          zio_nowait(rzio);
>>>                                          return (0);
>>>                                  }
>>>
>>>                                  ASSERT(*arc_flags & ARC_WAIT);
>>>                                  if (zio_wait(rzio) == 0)
>>>                                          return (0);
>>>
>>>                                  /* l2arc read error; goto zio_read() */
>>>
>>> Is this locking issue?
>> This looks like a bug that was already fixed in illumos and FreeBSD head.
>> What version of FreeBSD do you use?
>> See r258388 and r258389.
> 10.0-BETA1
>
> I don't see commit to 10.x
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I think that at that time HEAD was FreeBSD 10, FreeBSD 11 was created 
later on.
If you look at the source, you can see that these fixes are in the 
source of 10.0

regards
Johan