tree 94f07ed2b5d18aef71f1b28193375f88c0c947bc
parent f4d6ff89d8e54b68a4322388d26d518d6133fa4e
author Al Viro <viro@zeniv.linux.org.uk> 1308581577 -0400
committer Al Viro <viro@zeniv.linux.org.uk> 1311140594 -0400

lockless get_write_access/deny_write_access

new helpers: atomic_inc_unless_negative()/atomic_dec_unless_positive()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>