nested_bucket_table_alloc

Name:nested_bucket_table_alloc

Proto:static struct bucket_table *nested_bucket_table_alloc(struct rhashtable *ht, size_t nbuckets, gfp_t gfp)

Type:struct bucket_table

Parameter:

Type	Parameter	Name
struct rhashtable *	ht
size_t	nbuckets
gfp_t	gfp

142

shift = PAGE_SHIFT determines the page size - log2 - log base 2 of 32-bit or a 64-bit unsigned value*@n: parameter* constant-capable log of base 2 calculation* - this can be used to initialise global variables from constant data, hence* the massive ternary operator construction* selects the ( size of * )

146

If nbuckets < 1 << shift + 1 Then Return NULL

149

size = size of tbl + size of buckets[0]

151

tbl = kzalloc - allocate memory. The memory is set to zero.*@size: how many bytes of memory are required.*@flags: the type of memory to allocate (see kmalloc).

152

If Not tbl Then Return NULL

155

If Not nested_table_alloc(ht, (unionnested_table __rcu * * )buckets, false) Then

157

158

Return NULL

161

nest = (log2 - log base 2 of 32-bit or a 64-bit unsigned value*@n: parameter* constant-capable log of base 2 calculation* - this can be used to initialise global variables from constant data, hence* the massive ternary operator construction* selects the (nbuckets) - 1) % shift + 1

163

Return tbl

**Caller**
Name	Describe
bucket_table_alloc

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