Victory! I've reworked caches with large objects which are

based by vmalloc()'ed memory.  I now alloc a slab which is
roughly 32*spl_obj_size and in this block of memory I place
the slab descriptor, slab object descriptors, and objects
themselves.  This greatly reduces vmalloc lock contention.

Still some minor cleanup remains and fine tuning but
it's working pretty well.



git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@139 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c

include/sys/kmem.h

@@ -485,7 +485,6 @@ typedef struct spl_kmem_magazine {
 
 typedef struct spl_kmem_obj {
         uint32_t		sko_magic;	/* Sanity magic */
-	uint32_t		sko_flags;	/* Per object flags */
 	void			*sko_addr;	/* Buffer address */
 	struct spl_kmem_slab	*sko_slab;	/* Owned by slab */
 	struct list_head	sko_list;	/* Free object list linkage */