Weston Andros Adamson bc8a309e88 nfs: fix nonblocking calls to nfs_page_group_lock
nfs_page_group_lock was calling wait_on_bit_lock even when told not to
block. Fix by first trying test_and_set_bit, followed by wait_on_bit_lock
if and only if blocking is allowed.  Return -EAGAIN if nonblocking and the
test_and_set of the bit was already locked.

Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
Reviewed-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-08-22 18:04:42 -04:00
..
2014-08-08 15:57:24 -07:00
2014-08-08 15:57:20 -07:00
2014-06-04 16:53:53 -07:00
2014-08-06 18:01:12 -07:00
2014-08-07 14:40:09 -04:00
2014-08-08 18:13:21 -07:00
2014-07-23 15:01:44 -07:00
2014-08-06 18:01:12 -07:00
2014-07-15 22:40:23 +02:00
2014-07-31 15:52:51 +03:00
2014-08-16 08:56:27 -06:00
2014-08-07 14:40:09 -04:00
2014-08-07 14:40:11 -04:00
2014-08-08 15:57:23 -07:00
2014-08-08 15:57:31 -07:00
2014-05-06 17:31:10 -04:00
2014-08-07 14:40:08 -04:00
2014-08-07 14:40:09 -04:00
2014-05-06 17:39:42 -04:00
2014-04-01 23:19:08 -04:00
2014-04-01 23:19:08 -04:00
2014-07-23 10:18:02 -07:00