Name
set_bit —
Atomically set a bit in memory
Synopsis
void set_bit ( | long nr, |
| | volatile unsigned long * addr); |
Arguments
nr
the bit to set
addr
the address to start counting from
Description
This function is atomic and may not be reordered. See __set_bit
if you do not require the atomic guarantees.
Note
there are no guarantees that this function will not be reordered
on non x86 architectures, so if you are writing portable code,
make sure not to rely on its reordering guarantees.
Note that nr may be almost arbitrarily large; this function is not
restricted to acting on a single-word quantity.