Author: scottl
Date: Tue Jan 9 21:23:16 2018
New Revision: 327741
URL: https://svnweb.freebsd.org/changeset/base/327741
Log:
Hold a refcount on the periph while running the allocation
queue. This will allow sub-transports to release their
probe pseudo-device with fewer convoluted restrictions.
Obtained from: Netflix
Modified:
head/sys/cam/cam_xpt.c
Modified: head/sys/cam/cam_xpt.c
==============================================================================
--- head/sys/cam/cam_xpt.c Tue Jan 9 21:12:53 2018 (r327740)
+++ head/sys/cam/cam_xpt.c Tue Jan 9 21:23:16 2018 (r327741)
@@ -3383,6 +3383,7 @@ xpt_run_allocq(struct cam_periph *periph, int sleep)
cam_periph_assert(periph, MA_OWNED);
if (periph->periph_allocating)
return;
+ cam_periph_doacquire(periph);
periph->periph_allocating = 1;
CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_allocq(%p)\n", periph));
device = periph->path->device;
@@ -3426,6 +3427,7 @@ restart:
if (ccb != NULL)
xpt_release_ccb(ccb);
periph->periph_allocating = 0;
+ cam_periph_release_locked(periph);
}
static void
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