CIFS: Simplify setlk error handling for mandatory locking
Now we allocate a lock structure at first, then we request to the server and save the lock if server returned OK though void function - it prevents the situation when we locked a file on the server and then return -ENOMEM from setlk. Signed-off-by: NPavel Shilovsky <piastry@etersoft.ru> Acked-by: NJeff Layton <jlayton@samba.org> Signed-off-by: NSteve French <sfrench@us.ibm.com>
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