user/sven/linux.git/include/linux/sunrpc, branch v3.16.46

SUNRPC: cleanup ida information when removing sunrpc module

2017-03-16T02:27:05Z

commit c929ea0b910355e1876c64431f3d5802f95b3d75 upstream. After removing sunrpc module, I get many kmemleak information as, unreferenced object 0xffff88003316b1e0 (size 544): comm "gssproxy", pid 2148, jiffies 4294794465 (age 4200.081s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [] kmemleak_alloc+0x4a/0xa0 [] kmem_cache_alloc+0x15e/0x1f0 [] ida_pre_get+0xaa/0x150 [] ida_simple_get+0xad/0x180 [] nlmsvc_lookup_host+0x4ab/0x7f0 [lockd] [] lockd+0x4d/0x270 [lockd] [] param_set_timeout+0x55/0x100 [lockd] [] svc_defer+0x114/0x3f0 [sunrpc] [] svc_defer+0x2d7/0x3f0 [sunrpc] [] rpc_show_info+0x8a/0x110 [sunrpc] [] proc_reg_write+0x7f/0xc0 [] __vfs_write+0xdf/0x3c0 [] vfs_write+0xef/0x240 [] SyS_write+0xad/0x130 [] entry_SYSCALL_64_fastpath+0x1a/0xa9 [] 0xffffffffffffffff I found, the ida information (dynamic memory) isn't cleanup. Signed-off-by: Kinglong Mee Fixes: 2f048db4680a ("SUNRPC: Add an identifier for struct rpc_clnt") Signed-off-by: Trond Myklebust [bwh: Backported to 3.16: adjust context] Signed-off-by: Ben Hutchings

svcrdma: Tail iovec leaves an orphaned DMA mapping

2017-02-23T03:54:03Z

commit cace564f8b6260e806f5e28d7f192fd0e0c603ed upstream. The ctxt's count field is overloaded to mean the number of pages in the ctxt->page array and the number of SGEs in the ctxt->sge array. Typically these two numbers are the same. However, when an inline RPC reply is constructed from an xdr_buf with a tail iovec, the head and tail often occupy the same page, but each are DMA mapped independently. In that case, ->count equals the number of pages, but it does not equal the number of SGEs. There's one more SGE, for the tail iovec. Hence there is one more DMA mapping than there are pages in the ctxt->page array. This isn't a real problem until the server's iommu is enabled. Then each RPC reply that has content in that iovec orphans a DMA mapping that consists of real resources. krb5i and krb5p always populate that tail iovec. After a couple million sent krb5i/p RPC replies, the NFS server starts behaving erratically. Reboot is needed to clear the problem. Fixes: 9d11b51ce7c1 ("svcrdma: Fix send_reply() scatter/gather set-up") Signed-off-by: Chuck Lever Signed-off-by: J. Bruce Fields [bwh: Backported to 3.16: - Adjust context - Drop changes to svc_rdma_bc_sendto() - s/xprt->sc_pd->local_dma_lkey/xprt->sc_dma_lkey/ Signed-off-by: Ben Hutchings

sunrpc: Update RPCBIND_MAXNETIDLEN

2016-08-22T21:38:01Z

commit 4b9c7f9db9a003f5c342184dc4401c1b7f2efb39 upstream. Commit 176e21ee2ec8 ("SUNRPC: Support for RPC over AF_LOCAL transports") added a 5-character netid, but did not bump RPCBIND_MAXNETIDLEN from 4 to 5. Fixes: 176e21ee2ec8 ("SUNRPC: Support for RPC over AF_LOCAL ...") Signed-off-by: Chuck Lever Signed-off-by: Anna Schumaker Signed-off-by: Ben Hutchings

SUNRPC: Don't wake tasks during connection abort

2014-11-14T15:20:05Z

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: Luis Henriques

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

2014-09-05T23:36:42Z

commit 3c45ddf823d679a820adddd53b52c6699c9a05ac upstream. 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 Signed-off-by: Greg Kroah-Hartman

Merge tag 'nfs-for-3.16-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

2014-06-10T22:02:42Z

Pull NFS client updates from Trond Myklebust: "Highlights include: - massive cleanup of the NFS read/write code by Anna and Dros - support multiple NFS read/write requests per page in order to deal with non-page aligned pNFS striping. Also cleans up the r/wsize < page size code nicely. - stable fix for ensuring inode is declared uptodate only after all the attributes have been checked. - stable fix for a kernel Oops when remounting - NFS over RDMA client fixes - move the pNFS files layout driver into its own subdirectory" * tag 'nfs-for-3.16-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (79 commits) NFS: populate ->net in mount data when remounting pnfs: fix lockup caused by pnfs_generic_pg_test NFSv4.1: Fix typo in dprintk NFSv4.1: Comment is now wrong and redundant to code NFS: Use raw_write_seqcount_begin/end int nfs4_reclaim_open_state xprtrdma: Disconnect on registration failure xprtrdma: Remove BUG_ON() call sites xprtrdma: Avoid deadlock when credit window is reset SUNRPC: Move congestion window constants to header file xprtrdma: Reset connection timeout after successful reconnect xprtrdma: Use macros for reconnection timeout constants xprtrdma: Allocate missing pagelist xprtrdma: Remove Tavor MTU setting xprtrdma: Ensure ia->ri_id->qp is not NULL when reconnecting xprtrdma: Reduce the number of hardway buffer allocations xprtrdma: Limit work done by completion handler xprtrmda: Reduce calls to ib_poll_cq() in completion handlers xprtrmda: Reduce lock contention in completion handlers xprtrdma: Split the completion queue xprtrdma: Make rpcrdma_ep_destroy() return void ...

Merge branch 'for-3.16' of git://linux-nfs.org/~bfields/linux

2014-06-10T18:50:57Z

Pull nfsd updates from Bruce Fields: "The largest piece is a long-overdue rewrite of the xdr code to remove some annoying limitations: for example, there was no way to return ACLs larger than 4K, and readdir results were returned only in 4k chunks, limiting performance on large directories. Also: - part of Neil Brown's work to make NFS work reliably over the loopback interface (so client and server can run on the same machine without deadlocks). The rest of it is coming through other trees. - cleanup and bugfixes for some of the server RDMA code, from Steve Wise. - Various cleanup of NFSv4 state code in preparation for an overhaul of the locking, from Jeff, Trond, and Benny. - smaller bugfixes and cleanup from Christoph Hellwig and Kinglong Mee. Thanks to everyone! This summer looks likely to be busier than usual for knfsd. Hopefully we won't break it too badly; testing definitely welcomed" * 'for-3.16' of git://linux-nfs.org/~bfields/linux: (100 commits) nfsd4: fix FREE_STATEID lockowner leak svcrdma: Fence LOCAL_INV work requests svcrdma: refactor marshalling logic nfsd: don't halt scanning the DRC LRU list when there's an RC_INPROG entry nfs4: remove unused CHANGE_SECURITY_LABEL nfsd4: kill READ64 nfsd4: kill READ32 nfsd4: simplify server xdr->next_page use nfsd4: hash deleg stateid only on successful nfs4_set_delegation nfsd4: rename recall_lock to state_lock nfsd: remove unneeded zeroing of fields in nfsd4_proc_compound nfsd: fix setting of NFS4_OO_CONFIRMED in nfsd4_open nfsd4: use recall_lock for delegation hashing nfsd: fix laundromat next-run-time calculation nfsd: make nfsd4_encode_fattr static SUNRPC/NFSD: Remove using of dprintk with KERN_WARNING nfsd: remove unused function nfsd_read_file nfsd: getattr for FATTR4_WORD0_FILES_AVAIL needs the statfs buffer NFSD: Error out when getting more than one fsloc/secinfo/uuid NFSD: Using type of uint32_t for ex_nflavors instead of int ...

svcrdma: refactor marshalling logic

2014-06-06T23:22:50Z

This patch refactors the NFSRDMA server marshalling logic to remove the intermediary map structures. It also fixes an existing bug where the NFSRDMA server was not minding the device fast register page list length limitations. Signed-off-by: Tom Tucker Signed-off-by: Steve Wise

SUNRPC: Move congestion window constants to header file

2014-06-04T12:56:51Z

I would like to use one of the RPC client's congestion algorithm constants in transport-specific code. Signed-off-by: Chuck Lever Signed-off-by: Anna Schumaker

nfsd4: better reservation of head space for krb5

2014-05-30T21:32:17Z

RPC_MAX_AUTH_SIZE is scattered around several places. Better to set it once in the auth code, where this kind of estimate should be made. And while we're at it we can leave it zero when we're not using krb5i or krb5p. Signed-off-by: J. Bruce Fields