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path: root/fs/orangefs/waitqueue.c
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2016-08-16orangefs: rename most remaining global variablesMartin Brandenburg
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 <martin@omnibond.com>
2016-03-03Orangefs: improve gossip statementsMike Marshall
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-26Orangefs: code sanitation.Mike Marshall
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-24Orangefs: code sanitationMike Marshall
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19orangefs: have ..._clean_interrupted_...() wait for copy to/from daemonAl Viro
* 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 <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19Orangefs: remove vestigial ASYNC codeMike Marshall
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19Orangefs: make some gossip statements more helpful.Mike Marshall
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19orangefs: bufmap rewriteAl Viro
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 <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19orangefs: lift handling of timeouts and attempts count to service_operation()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19service_operation(): don't block signals, just use ..._killableAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19orangefs: sanitize handling of request listAl Viro
* checking that daemon is running (to decide whether we want to limit the timeout) should be done *after* the damn thing is included into the list; doing that before means that if the daemon gets shut down in between, we'll end up waiting indefinitely (== up to kill -9). * cancels should go into the head of the queue - the sooner they are picked, the less work daemon has to do and the sooner we get to free the slot held by aborted operation. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19orangefs: get rid of loop in wait_for_matching_downcall()Al Viro
turn op->waitq into struct completion... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19orangefs: delay freeing slot until cancel completesAl Viro
Make cancels reuse the aborted read/write op, to make sure they do not fail on lack of memory. Don't issue a cancel unless the daemon has seen our read/write, has not replied and isn't being shut down. If cancel *is* issued, don't wait for it to complete; stash the slot in there and just have it freed when cancel is finally replied to or purged (and delay dropping the reference until then, obviously). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-04Orangefs: added a couple of WARN_ONs, perhaps just temporarily.Mike Marshall
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23orangefs: get rid of MSECS_TO_JIFFIESAl Viro
All timeouts are in _seconds_, so all calls are of form MSECS_TO_JIFFIES(n * 1000), which is a convoluted way to spell n * HZ. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23orangefs_clean_up_interrupted_operation: call with op->lock heldAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23orangefs: reduce nesting in wait_for_matching_downcall()Al Viro
reorder if branches... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23orangefs: remove cargo-culting spin_lock_irqsave() in service_operation()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23orangefs: hopefully saner op refcounting and lockingAl Viro
* create with refcount 1 * make op_release() decrement and free if zero (i.e. old put_op() has become that). * mark when submitter has given up waiting; from that point nobody else can move between the lists, change state, etc. * have daemon read/write_iter grab a reference when picking op and *always* give it up in the end * don't put into hash until we know it's been successfully passed to daemon * move op->lock _lower_ than htab_in_progress_lock (and make sure to take it in purge_inprogress_ops()) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23orangefs: make wait_for_...downcall() staticAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23orangefs: move wakeups into set_op_state_{serviced,purged}()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23orangefs: make wait_for_...downcall() staticAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23make orangefs_clean_up_interrupted_operation() staticAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23orangefs: get rid of <censored> macrosAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-04orangefs: Fix some more global namespace pollution.Martin Brandenburg
This only changes the names of things, so there is no functional change. Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-04orangefs: Don't pollute global namespaceRichard Weinberger
Prefix public functions with "orangefs_" do don't pollute the global namespace. This fixes a build issue on UML which also has block_signals(). Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-12-14Orangefs: Don't wait the old-fashioned way.Mike Marshall
Get rid of add_wait_queue, set_current_state, etc, and use the wait_event() model. Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-12-04Orangefs: change pvfs2 filenames to orangefsMike Marshall
Also changed references within source files that referred to header files whose names had changed. Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-12-03OrangeFS: Change almost all instances of the string PVFS2 to OrangeFS.Yi Liu
OrangeFS was formerly known as PVFS2 and retains the name in many places. I leave the device /dev/pvfs2-req since this affects userspace. I leave the filesystem type pvfs2 since this affects userspace. Further the OrangeFS sysint library reads fstab for an entry of type pvfs2 independently of kernel mounts. I leave extended attribute keys user.pvfs2 and system.pvfs2 as the sysint library understands these. I leave references to userspace binaries still named pvfs2. I leave the filenames. Signed-off-by: Yi Liu <yi9@clemson.edu> [martin@omnibond.com: clairify above constraints and merge] Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03Orangefs: update signal blocking code before Oleg sees it.Mike Marshall
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03Orangefs: sooth most sparse complaintsMike Marshall
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03Orangefs: kernel client part 5Mike Marshall
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
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