D20229.id57281.diff
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D20229.id57281.diff
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	Index: head/sys/kern/subr_blist.c
	===================================================================
	--- head/sys/kern/subr_blist.c
	+++ head/sys/kern/subr_blist.c
	@@ -607,7 +607,6 @@
	blst_next_leaf_alloc(blmeta_t *scan, daddr_t blk, int count)
	{
	blmeta_t *next;
	- daddr_t skip;
	u_daddr_t radix;
	int digit;

	@@ -632,13 +631,14 @@
	/*
	* Update bitmaps of next-ancestors, up to least common ancestor.
	*/
	- skip = radix_to_skip(radix);
	- while (radix != BLIST_BMAP_RADIX && next->bm_bitmap == 0) {
	- (--next)->bm_bitmap ^= 1;
	- radix /= BLIST_META_RADIX;
	- }
	- if (next->bm_bitmap == 0)
	- scan[-digit * skip].bm_bitmap ^= (u_daddr_t)1 << digit;
	+ while (next->bm_bitmap == 0) {
	+ if (--next == scan) {
	+ scan[-digit * radix_to_skip(radix)].bm_bitmap ^=
	+ (u_daddr_t)1 << digit;
	+ break;
	+ }
	+ next->bm_bitmap ^= 1;
	+ }
	return (0);
	}