Name
change_bit —
Toggle a bit in memory
Synopsis
void change_bit (int nr, volatile unsigned long * addr);
Arguments
nr
Bit to change
addr
Address to start counting from
Description
change_bit is atomic and may not be reordered. It may be
reordered on other architectures than x86.
Note that nr may be almost arbitrarily large; this function is not
restricted to acting on a single-word quantity.