linux.git/fs/orangefs/waitqueue.c, branch v4.13

orangefs: do not wait for timeout if umounting

2017-04-26T18:33:01+00:00

When the computer is turned off, all the processes are killed and then
all the filesystems are umounted.  OrangeFS should not wait for the
userspace daemon to come back in that case.

This only works for plain umount(2).  To actually take advantage of this
interactively, `umount -f' is needed; otherwise umount will issue a
statfs first, which will wait for the userspace daemon to come back.

Signed-off-by: Martin Brandenburg 
Signed-off-by: Mike Marshall

orangefs: rename most remaining global variables

2016-08-16T15:41:24+00:00

Only op_timeout_secs, slot_timeout_secs, and hash_table_size are left
because they are exposed as module parameters. All other global
variables have the orangefs_ prefix.

Signed-off-by: Martin Brandenburg

Orangefs: improve gossip statements

2016-03-03T18:46:48+00:00

Signed-off-by: Mike Marshall

Orangefs: code sanitation.

2016-02-26T15:21:12+00:00

Signed-off-by: Mike Marshall

Orangefs: code sanitation

2016-02-24T21:54:27+00:00

Signed-off-by: Mike Marshall

orangefs: have ..._clean_interrupted_...() wait for copy to/from daemon

2016-02-19T18:45:56+00:00

* turn all those list_del(&op->list) into list_del_init()
* don't pick ops that are already given up in control device
  ->read()/->write_iter().
* have orangefs_clean_interrupted_operation() notice if op is currently
  being copied to/from daemon (by said ->read()/->write_iter()) and
  wait for that to finish.
* when we are done copying to/from daemon and find that it had been
  given up while we were doing that, wake the waiting ..._clean_interrupted_...

As the result, we are guaranteed that orangefs_clean_interrupted_operation(op)
doesn't return until nobody else can see op.  Moreover, we don't need to play
with op refcounts anymore.

Signed-off-by: Al Viro 
Signed-off-by: Mike Marshall

Orangefs: remove vestigial ASYNC code

2016-02-19T18:45:55+00:00

Signed-off-by: Mike Marshall

Orangefs: make some gossip statements more helpful.

2016-02-19T18:45:55+00:00

Signed-off-by: Mike Marshall

orangefs: bufmap rewrite

2016-02-19T18:45:54+00:00

new waiting-for-slot logics:
	* make request for slot wait for bufmap to be set up if it
comes before it's installed *OR* while it's running down
	* make closing control device wait for all slots to be freed
	* waiting itself rewritten to (open-coded) analogues of wait_event_...
primitives - we would need wait_event_locked() and, pardon an obscenely
long name, wait_event_interruptible_exclusive_timeout_locked().
	* we never wait for more than slot_timeout_secs in total and,
if during the wait the daemon goes away, we only allow
ORANGEFS_BUFMAP_WAIT_TIMEOUT_SECS for it to come back.
	* (cosmetical) bitmap is used instead of an array of zeroes and ones
	* old (and only reached if we are about to corrupt memory) waiting
for daemon restart in service_operation() removed.

[Martin's fixes folded]

Signed-off-by: Al Viro 
Signed-off-by: Mike Marshall

orangefs: lift handling of timeouts and attempts count to service_operation()

2016-02-19T18:45:54+00:00

Signed-off-by: Al Viro 
Signed-off-by: Mike Marshall