> Is there any lock/mutex primitives available for Linux kernel to use ? How
> the shared data is protected from multiple kernel processes ?
libpthread has some (POSIX defined?) mutex and similar primitives.
If the kernel is compiled with sysv IPC (almost all will be) then you can
use the sysV semaphores (man ipc).
If you want to protect shared data between applications, where the locking
is only for a very short amount of time, you can use spinlocks.
-cw
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