linux-toradex.git/include/linux/sunrpc, branch v3.17-rc4

Merge tag 'nfs-for-3.17-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

2014-08-14T00:13:19+00:00

Pull NFS client updates from Trond Myklebust:
 "Highlights include:

   - stable fix for a bug in nfs3_list_one_acl()
   - speed up NFS path walks by supporting LOOKUP_RCU
   - more read/write code cleanups
   - pNFS fixes for layout return on close
   - fixes for the RCU handling in the rpcsec_gss code
   - more NFS/RDMA fixes"

* tag 'nfs-for-3.17-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (79 commits)
  nfs: reject changes to resvport and sharecache during remount
  NFS: Avoid infinite loop when RELEASE_LOCKOWNER getting expired error
  SUNRPC: remove all refcounting of groupinfo from rpcauth_lookupcred
  NFS: fix two problems in lookup_revalidate in RCU-walk
  NFS: allow lockless access to access_cache
  NFS: teach nfs_lookup_verify_inode to handle LOOKUP_RCU
  NFS: teach nfs_neg_need_reval to understand LOOKUP_RCU
  NFS: support RCU_WALK in nfs_permission()
  sunrpc/auth: allow lockless (rcu) lookup of credential cache.
  NFS: prepare for RCU-walk support but pushing tests later in code.
  NFS: nfs4_lookup_revalidate: only evaluate parent if it will be used.
  NFS: add checks for returned value of try_module_get()
  nfs: clear_request_commit while holding i_lock
  pnfs: add pnfs_put_lseg_async
  pnfs: find swapped pages on pnfs commit lists too
  nfs: fix comment and add warn_on for PG_INODE_REF
  nfs: check wait_on_bit_lock err in page_group_lock
  sunrpc: remove "ec" argument from encrypt_v2 operation
  sunrpc: clean up sparse endianness warnings in gss_krb5_wrap.c
  sunrpc: clean up sparse endianness warnings in gss_krb5_seal.c
  ...

Merge branch 'for-3.17' of git://linux-nfs.org/~bfields/linux

2014-08-09T21:31:18+00:00

Pull nfsd updates from Bruce Fields:
 "This includes a major rewrite of the NFSv4 state code, which has
  always depended on a single mutex.  As an example, open creates are no
  longer serialized, fixing a performance regression on NFSv3->NFSv4
  upgrades.  Thanks to Jeff, Trond, and Benny, and to Christoph for
  review.

  Also some RDMA fixes from Chuck Lever and Steve Wise, and
  miscellaneous fixes from Kinglong Mee and others"

* 'for-3.17' of git://linux-nfs.org/~bfields/linux: (167 commits)
  svcrdma: remove rdma_create_qp() failure recovery logic
  nfsd: add some comments to the nfsd4 object definitions
  nfsd: remove the client_mutex and the nfs4_lock/unlock_state wrappers
  nfsd: remove nfs4_lock_state: nfs4_state_shutdown_net
  nfsd: remove nfs4_lock_state: nfs4_laundromat
  nfsd: Remove nfs4_lock_state(): reclaim_complete()
  nfsd: Remove nfs4_lock_state(): setclientid, setclientid_confirm, renew
  nfsd: Remove nfs4_lock_state(): exchange_id, create/destroy_session()
  nfsd: Remove nfs4_lock_state(): nfsd4_open and nfsd4_open_confirm
  nfsd: Remove nfs4_lock_state(): nfsd4_delegreturn()
  nfsd: Remove nfs4_lock_state(): nfsd4_open_downgrade + nfsd4_close
  nfsd: Remove nfs4_lock_state(): nfsd4_lock/locku/lockt()
  nfsd: Remove nfs4_lock_state(): nfsd4_release_lockowner
  nfsd: Remove nfs4_lock_state(): nfsd4_test_stateid/nfsd4_free_stateid
  nfsd: Remove nfs4_lock_state(): nfs4_preprocess_stateid_op()
  nfsd: remove old fault injection infrastructure
  nfsd: add more granular locking to *_delegations fault injectors
  nfsd: add more granular locking to forget_openowners fault injector
  nfsd: add more granular locking to forget_locks fault injector
  nfsd: add a list_head arg to nfsd_foreach_client_lock
  ...

sunrpc/auth: allow lockless (rcu) lookup of credential cache.

2014-08-03T21:14:12+00:00

The new flag RPCAUTH_LOOKUP_RCU to credential lookup avoids locking,
does not take a reference on the returned credential, and returns
-ECHILD if a simple lookup was not possible.

The returned value can only be used within an rcu_read_lock protected
region.

The main user of this is the new rpc_lookup_cred_nonblock() which
returns a pointer to the current credential which is only rcu-safe (no
ref-count held), and might return -ECHILD if allocation was required.

Signed-off-by: NeilBrown 
Signed-off-by: Trond Myklebust

sunrpc: remove "ec" argument from encrypt_v2 operation

2014-08-03T21:05:24+00:00

It's always 0.

Signed-off-by: Jeff Layton 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Trond Myklebust

sunrpc: remove __rcu annotation from struct gss_cl_ctx->gc_gss_ctx

2014-08-03T21:05:23+00:00

Commit 5b22216e11f7 (nfs: __rcu annotations) added a __rcu annotation to
the gc_gss_ctx field. I see no rationale for adding that though, as that
field does not seem to be managed via RCU at all.

Cc: Arnd Bergmann 
Cc: Paul McKenney 
Signed-off-by: Jeff Layton 
Signed-off-by: Trond Myklebust

Merge branch 'nfs-rdma' of git://git.linux-nfs.org/projects/anna/nfs-rdma into linux-next

2014-08-03T21:04:51+00:00

* 'nfs-rdma' of git://git.linux-nfs.org/projects/anna/nfs-rdma: (916 commits)
  xprtrdma: Handle additional connection events
  xprtrdma: Remove RPCRDMA_PERSISTENT_REGISTRATION macro
  xprtrdma: Make rpcrdma_ep_disconnect() return void
  xprtrdma: Schedule reply tasklet once per upcall
  xprtrdma: Allocate each struct rpcrdma_mw separately
  xprtrdma: Rename frmr_wr
  xprtrdma: Disable completions for LOCAL_INV Work Requests
  xprtrdma: Disable completions for FAST_REG_MR Work Requests
  xprtrdma: Don't post a LOCAL_INV in rpcrdma_register_frmr_external()
  xprtrdma: Reset FRMRs after a flushed LOCAL_INV Work Request
  xprtrdma: Reset FRMRs when FAST_REG_MR is flushed by a disconnect
  xprtrdma: Properly handle exhaustion of the rb_mws list
  xprtrdma: Chain together all MWs in same buffer pool
  xprtrdma: Back off rkey when FAST_REG_MR fails
  xprtrdma: Unclutter struct rpcrdma_mr_seg
  xprtrdma: Don't invalidate FRMRs if registration fails
  xprtrdma: On disconnect, don't ignore pending CQEs
  xprtrdma: Update rkeys after transport reconnect
  xprtrdma: Limit data payload size for ALLPHYSICAL
  xprtrdma: Protect ia->ri_id when unmapping/invalidating MRs
  ...

xprtrdma: Remove RPCRDMA_PERSISTENT_REGISTRATION macro

2014-07-31T20:22:59+00:00

Clean up.

RPCRDMA_PERSISTENT_REGISTRATION was a compile-time switch between
RPCRDMA_REGISTER mode and RPCRDMA_ALLPHYSICAL mode.  Since
RPCRDMA_REGISTER has been removed, there's no need for the extra
conditional compilation.

Signed-off-by: Chuck Lever 
Tested-by: Steve Wise 
Tested-by: Shirley Ma 
Tested-by: Devesh Sharma 
Signed-off-by: Anna Schumaker

SUNRPC: Allow svc_reserve() to notify TCP socket that space has been freed

2014-07-29T20:10:20+00:00

Signed-off-by: Trond Myklebust 
Signed-off-by: J. Bruce Fields

svcrdma: Double the default credit limit

2014-07-23T18:20:48+00:00

The RDMA credit limit controls how many concurrent RPCs are allowed
per connection.

An NFS/RDMA client and server exchange their credit limits in the
RPC/RDMA headers. The Linux client and the Solaris client and server
allow 32 credits. The Linux server allows only 16, which limits its
performance.

Set the server's default credit limit to 32, like the other well-
known implementations, so the out-of-the-shrinkwrap performance of
the Linux server is better.

Signed-off-by: Chuck Lever 
Signed-off-by: J. Bruce Fields

svcrdma: Select NFSv4.1 backchannel transport based on forward channel

2014-07-18T15:35:45+00:00

The current code always selects XPRT_TRANSPORT_BC_TCP for the back
channel, even when the forward channel was not TCP (eg, RDMA). When
a 4.1 mount is attempted with RDMA, the server panics in the TCP BC
code when trying to send CB_NULL.

Instead, construct the transport protocol number from the forward
channel transport or'd with XPRT_TRANSPORT_BC. Transports that do
not support bi-directional RPC will not have registered a "BC"
transport, causing create_backchannel_client() to fail immediately.

Fixes: https://bugzilla.linux-nfs.org/show_bug.cgi?id=265
Signed-off-by: Chuck Lever 
Signed-off-by: J. Bruce Fields