check_buf

Name:Check the invariants for the buffer allocated from a slab cache.* If the cache has a test constructor, the first 4 bytes of the object must* always remain equal to CTOR_PATTERN.* If the cache isn't an RCU-typesafe one, or if the allocation is done with

Proto:static bool __init check_buf(void *buf, int size, bool want_ctor, bool want_rcu, bool want_zero)

Type:bool

Parameter:

Type	Parameter	Name
void *	buf
int	size
bool	want_ctor
bool	want_rcu
bool	want_zero

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bool fail = false

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bytes = Calculate the number of uninitialized bytes in the buffer.

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WARN_ON(want_ctor && want_zero)

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If want_zero Then Return bytes

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If want_ctor Then

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If buf != CTOR_PATTERN Then fail = 1

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Else

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If bytes Then fail = Not want_rcu

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Return fail

**Caller**
Name	Describe
do_kmem_cache_size	Test kmem_cache with given parameters:

Source code conversion tool public plug-in interface	X
Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion

Function report