linux-toradex.git/include/linux/sunrpc/sched.h, branch v5.3.2

Revert "NFSv4/flexfiles: Abort I/O early if the layout segment was invalidated"

2019-08-26T19:31:29+00:00

This reverts commit a79f194aa4879e9baad118c3f8bb2ca24dbef765.
The mechanism for aborting I/O is racy, since we are not guaranteed that
the request is asleep while we're changing both task->tk_status and
task->tk_action.

Signed-off-by: Trond Myklebust 
Cc: stable@vger.kernel.org # v5.1

Merge branch 'multipath_tcp'

2019-07-06T18:54:52+00:00

NFS: send state management on a single connection.

2019-07-06T18:54:50+00:00

With NFSv4.1, different network connections need to be explicitly
bound to a session.  During session startup, this is not possible
so only a single connection must be used for session startup.

So add a task flag to disable the default round-robin choice of
connections (when nconnect > 1) and force the use of a single
connection.
Then use that flag on all requests for session management - for
consistence, include NFSv4.0 management (SETCLIENTID) and session
destruction

Reported-by: Chuck Lever 
Signed-off-by: NeilBrown 
Signed-off-by: Trond Myklebust

SUNRPC: Replace the queue timer with a delayed work function

2019-07-06T18:54:48+00:00

The queue timer function, which walks the RPC queue in order to locate
candidates for waking up is one of the current constraints against
removing the bh-safe queue spin locks. Replace it with a delayed
work queue, so that we can do the actual rpc task wake ups from an
ordinary process context.

Signed-off-by: Trond Myklebust

SUNRPC: Add tracking of RPC level errors

2019-04-25T18:18:13+00:00

Add variables to track RPC level errors so that we can distinguish
between issue that arose in the RPC transport layer as opposed to
those arising from the reply message.

Signed-off-by: Trond Myklebust 
Signed-off-by: Anna Schumaker

SUNRPC: Simplify queue timeouts using timer_reduce()

2019-04-25T18:18:13+00:00

Simplify the setting of queue timeouts by using the timer_reduce()
function.

Signed-off-by: Trond Myklebust 
Signed-off-by: Anna Schumaker

SUNRPC: Fix up tracking of timeouts

2019-04-25T18:18:13+00:00

Add a helper to ensure that debugfs and friends print out the
correct current task timeout value.

Signed-off-by: Trond Myklebust 
Signed-off-by: Anna Schumaker

SUNRPC: Add function rpc_sleep_on_timeout()

2019-04-25T18:18:13+00:00

Clean up the RPC task sleep interfaces by replacing the task->tk_timeout
'hidden parameter' to rpc_sleep_on() with a new function that takes an
absolute timeout.

Signed-off-by: Trond Myklebust 
Signed-off-by: Anna Schumaker

SUNRPC: Remove unused argument 'action' from rpc_sleep_on_priority()

2019-04-25T18:18:12+00:00

None of the callers set the 'action' argument, so let's just remove it.

Signed-off-by: Trond Myklebust 
Signed-off-by: Anna Schumaker

SUNRPC: Fix up task signalling

2019-04-25T18:18:12+00:00

The RPC_TASK_KILLED flag should really not be set from another context
because it can clobber data in the struct task when task->tk_flags is
changed non-atomically.
Let's therefore swap out RPC_TASK_KILLED with an atomic flag, and add
a function to set that flag and safely wake up the task.

Signed-off-by: Trond Myklebust 
Signed-off-by: Anna Schumaker