lock_sock_fast(9) centos man page | unix.com

LOCK_SOCK_FAST(9)						 Linux Networking						 LOCK_SOCK_FAST(9)

NAME
       lock_sock_fast - fast version of lock_sock

SYNOPSIS
       bool lock_sock_fast(struct sock * sk);

ARGUMENTS
       sk
	   socket

DESCRIPTION
       This version should be used for very small section, where process wont block return false if fast path is taken sk_lock.slock locked, owned
       = 0, BH disabled return true if slow path is taken sk_lock.slock unlocked, owned = 1, BH enabled

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							 LOCK_SOCK_FAST(9)