kernel/linux.git/include/linux/sunrpc/sched.h, branch v3.8.8

SUNRPC: Don't allow low priority tasks to pre-empt higher priority ones

2012-12-05T23:30:53+00:00

Currently, the priority queues attempt to be 'fair' to lower priority tasks by scheduling them after a certain number of higher priority tasks have run. The problem is that both the transport send queue and the NFSv4.1 session slot queue have strong ordering requirements. This patch therefore removes the fairness code in favour of strong ordering of task priorities. Signed-off-by: Trond Myklebust

NFS: include filelayout DS rpc stats in mountstats

2012-02-17T18:39:47+00:00

Include RPC statistics from all data servers in /proc/self/mountstats for pNFS filelayout mounts. Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust

SUNRPC: Ensure that we can trace waitqueues when !defined(CONFIG_SYSCTL)

2012-02-15T05:19:51+00:00

The tracepoint code relies on the queue->name being defined in order to be able to display the name of the waitqueue on which an RPC task is sleeping. Reported-by: Randy Dunlap Reported-by: Steven Rostedt Signed-off-by: Trond Myklebust Acked-by: Steven Rostedt Acked-by: Randy Dunlap

SUNRPC: Add trace events to the sunrpc subsystem

2012-02-01T00:28:21+00:00

Add declarations to allow tracing of RPC call creation, running, sleeping, and destruction. Signed-off-by: Trond Myklebust

SUNRPC: Fix potential races in xprt_lock_write_next()

2012-02-01T00:28:08+00:00

We have to ensure that the wake up from the waitqueue and the assignment of xprt->snd_task are atomic. We can do this by assigning the snd_task while under the waitqueue spinlock. Signed-off-by: Trond Myklebust

SUNRPC: make SUNPRC clients list per network namespace context

2012-01-31T23:20:25+00:00

This patch moves static SUNRPC clients list and it's lock to sunrpc_net structure. Currently this list is used only for debug purposes. But later it will be used also for selecting clients by networks namespace on PipeFS mount/umount events. Per-network namespace lists will make this faster and simplier. Note: client list is taken from "init_net" network namespace context in rpc_show_tasks(). This will be changed some day later with making SUNRPC sysctl's per network namespace context. Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust

SUNRPC: Allow caller of rpc_sleep_on() to select priority levels

2011-07-17T22:11:34+00:00

Currently, the caller has to change the value of task->tk_priority if it wants to select on which priority level the task will sleep. This patch allows the caller to select a priority level at sleep time rather than always using task->tk_priority. Signed-off-by: Trond Myklebust

NLM: Don't hang forever on NLM unlock requests

2011-06-15T15:24:27+00:00

If the NLM daemon is killed on the NFS server, we can currently end up hanging forever on an 'unlock' request, instead of aborting. Basically, if the rpcbind request fails, or the server keeps returning garbage, we really want to quit instead of retrying. Tested-by: Vasily Averin Signed-off-by: Trond Myklebust Cc: stable@kernel.org

SUNRPC: Allow RPC calls to return ETIMEDOUT instead of EIO

2011-04-24T18:28:45+00:00

On occasion, it is useful for the NFS layer to distinguish between soft timeouts and other EIO errors due to (say) encoding errors, or authentication errors. The following patch ensures that the default behaviour of the RPC layer remains to return EIO on soft timeouts (until we have audited all the callers). Signed-off-by: Trond Myklebust

NFSv4.1: Don't update sequence number if rpc_task is not sent

2011-04-18T21:05:48+00:00

If we fail to contact the gss upcall program, then no message will be sent to the server. The client still updated the sequence number, however, and this lead to NFS4ERR_SEQ_MISMATCH for the next several RPC calls. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust