nfs41_open_state maintains a list of outstanding byte-range locks by calling open_lock_add() and open_lock_remove() in lock.c
during client state recovery, after reclaiming each OPEN stateid, send LOCK requests with reclaim=TRUE for each lock it owns, and update the open's lock stateid with the result
added 'bool_t reclaim' argument to nfs41_lock(); when set, compound_encode_send_decode() is called with try_recovery=FALSE to avoid recursive recovery
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
moved recovery-related fields into struct nfs41_client.recovery. now uses a com
bination of CRITICAL_SECTION and CONDITION_VARIABLE for use with SleepConditionV
ariableCS()
renamed check_renew_in_progress() to recovery_start_or_wait(), and fixed the loc
king so that we atomically check/set in_recovery
when recovery is finished (including error conditions), call recovery_finish() t
o reset the recovery status and wake any waiting threads
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
operations that require a stateid now take stateid_arg for recovery information. these operations include close, setattr, lock/unlock, layoutget, and read/write (including pnfs)
nfs41_open_stateid_arg() locks nfs41_open_state and copies its stateid into a stateid_arg
nfs41_lock_stateid_arg() locks nfs41_open_state.last_lock and copies its stateid into a stateid_arg; if there is no lock state, it falls back to nfs41_open_stateid_arg()
pnfs_read/write() now take nfs41_open_state so they can generate stateid_args
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
after the client and session have been recovered, loop through the client's list of open state, calling nfs41_open_reclaim() and updating the stateid on success
nfs41_open_state saves the share_access and share_deny fields from the initial open, for use with nfs41_open_reclaim()
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
open state is added to the client's list on a successful call to nfs41_open(), and removed from the list on nfs41_close() regardless of success
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
very similar to the issue with nfs41_open_state, an abandoned upcall could outlive its mount. to prevent their nfs41_root from being freed, upcalls need to hold a reference until they're finished. this also keeps all of its clients/sessions/rpc connections alive
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
fixes a memory leak that occurs when a readdir loop doesn't complete, since the cookie was only freed on the last readdir upcall. by storing the cookie with nfs41_open_state, we can avoid passing the cookie to the driver and back, and not worry about having to free it separately
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
in handle_mount(), the call to nfs41_lookup() requires a mutable nfs41_abs_path because it can change on referrals, so make a copy for it
removed unused fields in struct nfs41_root and related arguments to nfs41_root_create()
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
because we no longer have to convert strings from unicode, we can avoid copying them out of the upcall buffer
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
