kernel/linux.git/include/linux/sunrpc/xprt.h, branch v3.14.43

SUNRPC: Don't wake tasks during connection abort

2014-11-14T16:59:44+00:00

commit a743419f420a64d442280845c0377a915b76644f upstream. When aborting a connection to preserve source ports, don't wake the task in xs_error_report. This allows tasks with RPC_TASK_SOFTCONN to succeed if the connection needs to be re-established since it preserves the task's status instead of setting it to the status of the aborting kernel_connect(). This may also avoid a potential conflict on the socket's lock. Signed-off-by: Benjamin Coddington Signed-off-by: Trond Myklebust Signed-off-by: Greg Kroah-Hartman

SUNRPC: Clean up - convert xprt_prepare_transmit to return a bool

2013-10-01T22:22:11+00:00

Signed-off-by: Trond Myklebust

SUNRPC: allow disabling idle timeout

2013-04-26T15:41:26+00:00

In the gss-proxy case we don't want to have to reconnect at random--we want to connect only on gss-proxy startup when we can steal gss-proxy's context to do the connect in the right namespace. So, provide a flag that allows the rpc_create caller to turn off the idle timeout. Signed-off-by: J. Bruce Fields

SUNRPC: Allow rpc_create() to request that TCP slots be unlimited

2013-04-14T16:26:03+00:00

This is mainly for use by NFSv4.1, where the session negotiation ultimately wants to decide how many RPC slots we can fill. Signed-off-by: Trond Myklebust

SUNRPC: Fix a livelock problem in the xprt->backlog queue

2013-04-14T16:26:02+00:00

This patch ensures that we throttle new RPC requests if there are requests already waiting in the xprt->backlog queue. The reason for doing this is to fix livelock issues that can occur when an existing (high priority) task is waiting in the backlog queue, gets woken up by xprt_free_slot(), but a new task then steals the slot. Signed-off-by: Trond Myklebust

SUNRPC: Pass pointers to struct rpc_xprt to the congestion window

2013-02-01T15:13:47+00:00

Avoid access to task->tk_xprt Signed-off-by: Trond Myklebust

SUNRPC: Pass a pointer to struct rpc_xprt to the connect callback

2013-02-01T15:13:47+00:00

Avoid another RCU dereference by passing the pointer to struct rpc_xprt from the caller. Signed-off-by: Trond Myklebust

SUNRPC: Get rid of the redundant xprt->shutdown bit field

2012-09-28T20:03:05+00:00

It is only set after everyone has dereferenced the transport, and serves no useful purpose: setting it is racy, so all the socket code, etc still needs to be able to cope with the cases where they miss reading it. Signed-off-by: Trond Myklebust

SUNRPC: Fix a UDP transport regression

2012-09-07T15:43:49+00:00

Commit 43cedbf0e8dfb9c5610eb7985d5f21263e313802 (SUNRPC: Ensure that we grab the XPRT_LOCK before calling xprt_alloc_slot) is causing hangs in the case of NFS over UDP mounts. Since neither the UDP or the RDMA transport mechanism use dynamic slot allocation, we can skip grabbing the socket lock for those transports. Add a new rpc_xprt_op to allow switching between the TCP and UDP/RDMA case. Note that the NFSv4.1 back channel assigns the slot directly through rpc_run_bc_task, so we can ignore that case. Reported-by: Dick Streefland Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org [>= 3.1]

nfs: enable swap on NFS

2012-08-01T01:42:48+00:00

Implement the new swapfile a_ops for NFS and hook up ->direct_IO. This will set the NFS socket to SOCK_MEMALLOC and run socket reconnect under PF_MEMALLOC as well as reset SOCK_MEMALLOC before engaging the protocol ->connect() method. PF_MEMALLOC should allow the allocation of struct socket and related objects and the early (re)setting of SOCK_MEMALLOC should allow us to receive the packets required for the TCP connection buildup. [jlayton@redhat.com: Restore PF_MEMALLOC task flags in all cases] [dfeng@redhat.com: Fix handling of multiple swap files] [a.p.zijlstra@chello.nl: Original patch] Signed-off-by: Mel Gorman Acked-by: Rik van Riel Cc: Christoph Hellwig Cc: David S. Miller Cc: Eric B Munson Cc: Eric Paris Cc: James Morris Cc: Mel Gorman Cc: Mike Christie Cc: Neil Brown Cc: Sebastian Andrzej Siewior Cc: Trond Myklebust Cc: Xiaotian Feng Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds