linux/drivers/block/xen-blkback
Juergen Gross a24fa22ce2 xen/blkback: don't use xen_blkif_get() in xen-blkback kthread
There is no need to use xen_blkif_get()/xen_blkif_put() in the kthread
of xen-blkback. Thread stopping is synchronous and using the blkif
reference counting in the kthread will avoid to ever let the reference
count drop to zero at the end of an I/O running concurrent to
disconnecting and multiple rings.

Setting ring->xenblkd to NULL after stopping the kthread isn't needed
as the kthread does this already.

Signed-off-by: Juergen Gross <jgross@suse.com>
Tested-by: Steven Haigh <netwiz@crc.id.au>
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2017-06-13 16:27:39 -04:00
..
blkback.c xen/blkback: don't use xen_blkif_get() in xen-blkback kthread 2017-06-13 16:27:39 -04:00
common.h xen/blkback: fix disconnect while I/Os in flight 2017-06-13 16:04:18 -04:00
Makefile xen/blkback: Squash vbd.c,interface.c in blkback.c and xenbus.c respectivly. 2011-04-20 11:57:59 -04:00
xenbus.c xen/blkback: don't use xen_blkif_get() in xen-blkback kthread 2017-06-13 16:27:39 -04:00