Terminate a blist_alloc search when a blst_meta_alloc call fails with

cursor == 0.

Every call to blst_meta_alloc but the one at the root is made only when the
meta-node is known to include a free block, so that either the allocation
will succeed, the node hint will be updated, or the last block of the meta-
node range is, and remains, free.  But the call at the root is made without
checking that there is a free block, so in the case that every block is
allocated, there is no hint update to prevent the current code from looping
forever.

Submitted by:	Doug Moore <dougm@rice.edu>
Reported by:	pho
Reviewed by:	pho
Tested by:	pho
X-MFC with:	r340402
Differential Revision:	https://reviews.freebsd.org/D17999

0 files changed, 0 insertions, 0 deletions