Tejun Heo f363e45fd1 net/ceph: make ceph_msgr_wq non-reentrant ... ceph messenger code does a rather complex dancing around multithread workqueue to make sure the same work item isn't executed concurrently on different CPUs. This restriction can be provided by workqueue with WQ_NON_REENTRANT. Make ceph_msgr_wq non-reentrant workqueue with the default concurrency level and remove the QUEUED/BUSY logic. * This removes backoff handling in con_work() but it couldn't reliably block execution of con_work() to begin with - queue_con() can be called after the work started but before BUSY is set. It seems that it was an optimization for a rather cold path and can be safely removed. * The number of concurrent work items is bound by the number of connections and connetions are independent from each other. With the default concurrency level, different connections will be executed independently. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Sage Weil <sage@newdream.net> Cc: ceph-devel@vger.kernel.org Signed-off-by: Sage Weil <sage@newdream.net>		2011-01-12 15:15:14 -08:00
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auth.h
buffer.h
ceph_debug.h
ceph_frag.h
ceph_fs.h	ceph: add dir_layout to inode	2011-01-12 15:15:12 -08:00
ceph_hash.h
debugfs.h
decode.h
libceph.h	ceph: mark user pages dirty on direct-io reads	2010-12-17 09:54:40 -08:00
mdsmap.h
messenger.h	net/ceph: make ceph_msgr_wq non-reentrant	2011-01-12 15:15:14 -08:00
mon_client.h
msgpool.h
msgr.h
osd_client.h	ceph: make page alignment explicit in osd interface	2010-11-09 12:43:12 -08:00
osdmap.h
pagelist.h
rados.h
types.h