1ATOMIC64_SUB_AND_TES(9)          Driver Basics         ATOMIC64_SUB_AND_TES(9)
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NAME

6       atomic64_sub_and_test - subtract value from variable and test result
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SYNOPSIS

9       int atomic64_sub_and_test(u64 delta, atomic64_t * ptr);
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ARGUMENTS

12       delta
13           integer value to subtract
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15       ptr
16           pointer to type atomic64_t
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DESCRIPTION

19       Atomically subtracts delta from ptr and returns true if the result is
20       zero, or false for all other cases.
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23Kernel Hackers Manual 2.6.         June 2019           ATOMIC64_SUB_AND_TES(9)
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