why do we need atomic_set_unchecked

[johnspaul92]

When i tried to apply the GrSecurity patch on linux kernel 3.10 and there the
patch actually modifies atomic_set to atomic_set_unchecked. When i checked
the gcc patch to compile this code it just redefines atomic_set as
atomic_set_unchecked. So what is the use of changing the function name.?? Am
I missing something here(i.e have they given a new definition for this
function anywhere else). And i would also like to know what this
function(atomic_set_unchecked. I know about the atomic_set function)  is
used for.



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