Messages in this thread | | | From | Shuah Khan <> | Subject | drivers/block/rbd.c: atomic_inc_return_safe() & atomic_dec_return_safe() | Date | Fri, 2 Oct 2020 16:34:40 -0600 |
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All,
I came across these atomic_inc_return_safe() & atomic_dec_return_safe() functions that hold the counters at safe values.
atomic_inc_return_safe()
If the counter is already 0 it will not be incremented. If the counter is already at its maximum value returns -EINVAL without updating it.
atomic_dec_return_safe()
Decrement the counter. Return the resulting value, or -EINVAL
These two routines are static and only used in rbd.c.
Can these become part of atomic_t ops?
thanks, -- Shuah
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