free_vmap_block

Name:free_vmap_block

Proto:static void free_vmap_block(struct vmap_block *vb)

Type:void

Parameter:

Type	Parameter	Name
struct vmap_block *	vb

1553

vb_idx = We should probably have a fallback mechanism to allocate virtual memory* out of partially filled vmap blocks. However vmap block sizing should be* fairly reasonable according to the vmalloc size, so it shouldn't be a* big problem.

1554

spin_lock( & Radix tree of vmap blocks, indexed by address, to quickly find a vmap block* in the free path. Could get rid of this if we change the API to return a* "cookie" from alloc, to be passed to free. But no big deal yet.)

1555

tmp = adix_tree_delete - delete an entry from a radix tree*@root: radix tree root*@index: index key* Remove the entry at @index from the radix tree rooted at @root.* Return: The deleted entry, or %NULL if it was not present.

1556

spin_unlock( & Radix tree of vmap blocks, indexed by address, to quickly find a vmap block* in the free path. Could get rid of this if we change the API to return a* "cookie" from alloc, to be passed to free. But no big deal yet.)

1557

BUG_ON(tmp != vb)

1559

Free a vmap area, caller ensuring that the area has been unmapped* and flush_cache_vunmap had been called for the correct range* previously.

1560

kfree_rcu() - kfree an object after a grace period(vb, rcu_head)

**Caller**
Name	Describe
purge_fragmented_blocks
vb_free

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