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Jeff Layton authored
Since we always hold the i_lock when inserting a new waiter onto the fl_block list, we can avoid taking the global lock at all if we find that it's empty when we go to wake up blocked waiters. Signed-off-by:
Jeff Layton <jlayton@redhat.com> Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk>
4e8c765d