lwn.git/include/linux, branch standardize-docs

Merge tag 'nfs-for-4.13-1' of git://git.linux-nfs.org/projects/anna/linux-nfs

2017-07-13T21:35:37+00:00

Pull NFS client updates from Anna Schumaker: "Stable bugfixes: - Fix -EACCESS on commit to DS handling - Fix initialization of nfs_page_array->npages - Only invalidate dentries that are actually invalid Features: - Enable NFSoRDMA transparent state migration - Add support for lookup-by-filehandle - Add support for nfs re-exporting Other bugfixes and cleanups: - Christoph cleaned up the way we declare NFS operations - Clean up various internal structures - Various cleanups to commits - Various improvements to error handling - Set the dt_type of . and .. entries in NFS v4 - Make slot allocation more reliable - Fix fscache stat printing - Fix uninitialized variable warnings - Fix potential list overrun in nfs_atomic_open() - Fix a race in NFSoRDMA RPC reply handler - Fix return size for nfs42_proc_copy() - Fix against MAC forgery timing attacks" * tag 'nfs-for-4.13-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (68 commits) NFS: Don't run wake_up_bit() when nobody is waiting... nfs: add export operations nfs4: add NFSv4 LOOKUPP handlers nfs: add a nfs_ilookup helper nfs: replace d_add with d_splice_alias in atomic_open sunrpc: use constant time memory comparison for mac NFSv4.2 fix size storage for nfs42_proc_copy xprtrdma: Fix documenting comments in frwr_ops.c xprtrdma: Replace PAGE_MASK with offset_in_page() xprtrdma: FMR does not need list_del_init() xprtrdma: Demote "connect" log messages NFSv4.1: Use seqid returned by EXCHANGE_ID after state migration NFSv4.1: Handle EXCHGID4_FLAG_CONFIRMED_R during NFSv4.1 migration xprtrdma: Don't defer MR recovery if ro_map fails xprtrdma: Fix FRWR invalidation error recovery xprtrdma: Fix client lock-up after application signal fires xprtrdma: Rename rpcrdma_req::rl_free xprtrdma: Pass only the list of registered MRs to ro_unmap_sync xprtrdma: Pre-mark remotely invalidated MRs xprtrdma: On invalidation failure, remove MWs from rl_registered ...

NFS: Don't run wake_up_bit() when nobody is waiting...

2017-07-13T21:12:07+00:00

"perf lock" shows fairly heavy contention for the bit waitqueue locks when doing an I/O heavy workload. Use a bit to tell whether or not there has been contention for a lock so that we can optimise away the bit waitqueue options in those cases. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

Merge tag 'nfsd-4.13' of git://linux-nfs.org/~bfields/linux

2017-07-13T20:56:24+00:00

Pull nfsd updates from Bruce Fields: "Chuck's RDMA update overhauls the "call receive" side of the RPC-over-RDMA transport to use the new rdma_rw API. Christoph cleaned the way nfs operations are declared, removing a bunch of function-pointer casts and declaring the operation vectors as const. Christoph's changes touch both client and server, and both client and server pulls this time around should be based on the same commits from Christoph" * tag 'nfsd-4.13' of git://linux-nfs.org/~bfields/linux: (53 commits) svcrdma: fix an incorrect check on -E2BIG and -EINVAL nfsd4: factor ctime into change attribute svcrdma: Remove svc_rdma_chunk_ctxt::cc_dir field svcrdma: use offset_in_page() macro svcrdma: Clean up after converting svc_rdma_recvfrom to rdma_rw API svcrdma: Clean-up svc_rdma_unmap_dma svcrdma: Remove frmr cache svcrdma: Remove unused Read completion handlers svcrdma: Properly compute .len and .buflen for received RPC Calls svcrdma: Use generic RDMA R/W API in RPC Call path svcrdma: Add recvfrom helpers to svc_rdma_rw.c sunrpc: Allocate up to RPCSVC_MAXPAGES per svc_rqst svcrdma: Don't account for Receive queue "starvation" svcrdma: Improve Reply chunk sanity checking svcrdma: Improve Write chunk sanity checking svcrdma: Improve Read chunk sanity checking svcrdma: Remove svc_rdma_marshal.c svcrdma: Avoid Send Queue overflow svcrdma: Squelch disconnection messages sunrpc: Disable splice for krb5i ...

nfs4: add NFSv4 LOOKUPP handlers

2017-07-13T20:00:15+00:00

This will be needed in order to implement the get_parent export op for nfsd. Signed-off-by: Jeff Layton Signed-off-by: Anna Schumaker

nfs: add a nfs_ilookup helper

2017-07-13T20:00:15+00:00

This helper will allow to find an existing NFS inode by the file handle and fattr. Signed-off-by: Peng Tao [hch: split from a larger patch] Signed-off-by: Christoph Hellwig Signed-off-by: Anna Schumaker

NFSv4.1: Handle EXCHGID4_FLAG_CONFIRMED_R during NFSv4.1 migration

2017-07-13T20:00:12+00:00

Transparent State Migration copies a client's lease state from the server where a filesystem used to reside to the server where it now resides. When an NFSv4.1 client first contacts that destination server, it uses EXCHANGE_ID to detect trunking relationships. The lease that was copied there is returned to that client, but the destination server sets EXCHGID4_FLAG_CONFIRMED_R when replying to the client. This is because the lease was confirmed on the source server (before it was copied). Normally, when CONFIRMED_R is set, a client purges the lease and creates a new one. However, that throws away the entire benefit of Transparent State Migration. Therefore, the client must not purge that lease when it is possible that Transparent State Migration has occurred. Reported-by: Xuan Qi Signed-off-by: Chuck Lever Tested-by: Xuan Qi Signed-off-by: Anna Schumaker

NFS: Ensure we commit after writeback is complete

2017-07-13T19:58:05+00:00

If the page cache is being flushed, then we want to ensure that we do start a commit once the pages are done being flushed. If we just wait until all I/O is done to that file, we can end up livelocking until the balance_dirty_pages() mechanism puts its foot down and forces I/O to stop. So instead we do more or less the same thing that O_DIRECT does, and set up a counter to tell us when the flush is done, Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

NFS: Remove unused fields in the page I/O structures

2017-07-13T19:58:05+00:00

Remove the 'layout_private' fields that were only used by the pNFS OSD layout driver. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

NFS: nfs_rename() - revalidate directories on -ERESTARTSYS

2017-07-13T19:58:04+00:00

An interrupted rename will leave the old dentry behind if the rename succeeds. Fix this by forcing a lookup the next time through ->d_revalidate. A previous attempt at solving this problem took the approach to complete the work of the rename asynchronously, however that approach was wrong since it would allow the d_move() to occur after the directory's i_mutex had been dropped by the original process. Signed-off-by: Benjamin Coddington Reviewed-by: Jeff Layton Signed-off-by: Anna Schumaker

NFS: convert flags to bool

2017-07-13T19:58:04+00:00

NFS uses some int, and unsigned int :1, and bool as flags in structs and args. Assert the preference for uniformly replacing these with the bool type. Signed-off-by: Benjamin Coddington Signed-off-by: Anna Schumaker