K 10
svn:author
V 3
mav
K 8
svn:date
V 27
2018-10-12T16:55:28.833255Z
K 7
svn:log
V 576
Avoid zero-sized kmem_alloc() in vdev_compact_children().

The device evacuation code adds a dependency that
vdev_compact_children() be able to properly empty the vdev_child
array by setting it to NULL and zeroing vdev_children.  Under Linux,
kmem_alloc() and related functions return a sentinel pointer rather
than NULL for zero-sized allocations.

This is a part of ZoL port of device removal patch:

commit a1d477c24c7badc89c60955995fd84d311938486
Author: Matthew Ahrens <mahrens@delphix.com>
Ported-by: Tim Chase <tim@chase2k.com>

Approved by:	re (kib)
MFC after:	1 week

END