pm24.git/include/linux/sunrpc, branch v6.14-rc2

Merge tag 'nfs-for-6.14-1' of git://git.linux-nfs.org/projects/anna/linux-nfs

2025-01-28T22:23:46Z

Pull NFS client updates from Anna Schumaker: "New Features: - Enable using direct IO with localio - Added localio related tracepoints Bugfixes: - Sunrpc fixes for working with a very large cl_tasks list - Fix a possible buffer overflow in nfs_sysfs_link_rpc_client() - Fixes for handling reconnections with localio - Fix how the NFS_FSCACHE kconfig option interacts with NETFS_SUPPORT - Fix COPY_NOTIFY xdr_buf size calculations - pNFS/Flexfiles fix for retrying requesting a layout segment for reads - Sunrpc fix for retrying on EKEYEXPIRED error when the TGT is expired Cleanups: - Various other nfs & nfsd localio cleanups - Prepratory patches for async copy improvements that are under development - Make OFFLOAD_CANCEL, LAYOUTSTATS, and LAYOUTERR moveable to other xprts - Add netns inum and srcaddr to debugfs rpc_xprt info" * tag 'nfs-for-6.14-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (28 commits) SUNRPC: do not retry on EKEYEXPIRED when user TGT ticket expired sunrpc: add netns inum and srcaddr to debugfs rpc_xprt info pnfs/flexfiles: retry getting layout segment for reads NFSv4.2: make LAYOUTSTATS and LAYOUTERROR MOVEABLE NFSv4.2: mark OFFLOAD_CANCEL MOVEABLE NFSv4.2: fix COPY_NOTIFY xdr buf size calculation NFS: Rename struct nfs4_offloadcancel_data NFS: Fix typo in OFFLOAD_CANCEL comment NFS: CB_OFFLOAD can return NFS4ERR_DELAY nfs: Make NFS_FSCACHE select NETFS_SUPPORT instead of depending on it nfs: fix incorrect error handling in LOCALIO nfs: probe for LOCALIO when v3 client reconnects to server nfs: probe for LOCALIO when v4 client reconnects to server nfs/localio: remove redundant code and simplify LOCALIO enablement nfs_common: add nfs_localio trace events nfs_common: track all open nfsd_files per LOCALIO nfs_client nfs_common: rename nfslocalio nfs_uuid_lock to nfs_uuids_lock nfsd: nfsd_file_acquire_local no longer returns GC'd nfsd_file nfsd: rename nfsd_serv_ prefixed methods and variables with nfsd_net_ nfsd: update percpu_ref to manage references on nfsd_net ...

sunrpc: Remove gss_generic_token deadcode

2025-01-21T20:30:01Z

Commit ec596aaf9b48 ("SUNRPC: Remove code behind CONFIG_RPCSEC_GSS_KRB5_SIMPLIFIED") was the last user of the routines in gss_generic_token.c. Remove the routines and associated header. Signed-off-by: Dr. David Alan Gilbert Reviewed-by: Jeff Layton Signed-off-by: Chuck Lever

sunrpc: Remove unused xprt_iter_get_xprt

2025-01-21T20:30:01Z

xprt_iter_get_xprt() was added by commit 80b14d5e61ca ("SUNRPC: Add a structure to track multiple transports") but is unused. Remove it. Signed-off-by: Dr. David Alan Gilbert Acked-by: Anna Schumaker Reviewed-by: Jeff Layton Signed-off-by: Chuck Lever

nfsd: rename NFS4_SHARE_WANT_* constants to OPEN4_SHARE_ACCESS_WANT_*

2025-01-21T20:30:01Z

Add the OPEN4_SHARE_ACCESS_WANT constants from the nfs4.1 and delstid draft into the nfs4_1.x file, and regenerate the headers and source files. Do a mass renaming of NFS4_SHARE_WANT_* to OPEN4_SHARE_ACCESS_WANT_* in the nfsd directory. Signed-off-by: Jeff Layton Signed-off-by: Chuck Lever

nfsd: switch to autogenerated definitions for open_delegation_type4

2025-01-21T20:30:01Z

Rename the enum with the same name in include/linux/nfs4.h, add the proper enum to nfs4_1.x and regenerate the headers and source files. Do a mass rename of all NFS4_OPEN_DELEGATE_* to OPEN_DELEGATE_* in the nfsd directory. Signed-off-by: Jeff Layton Signed-off-by: Chuck Lever

nfs_common: make include/linux/nfs4.h include generated nfs4_1.h

2025-01-21T20:30:00Z

In the long run, the NFS development community intends to autogenerate a lot of the XDR handling code. Both the NFS client and server include "include/linux/nfs4.hi". That file was hand-rolled, and some of the symbols in it conflict with the autogenerated symbols. Add a small nfs4_1.x to Documentation that currently just has the necessary definitions for the delstid draft, and generate the relevant header and source files. Make include/linux/nfs4.h include the generated include/linux/sunrpc/xdrgen/nfs4_1.h and remove the conflicting definitions from it and nfs_xdr.h. Signed-off-by: Jeff Layton Signed-off-by: Chuck Lever

SUNRPC: only put task on cl_tasks list after the RPC call slot is reserved.

2025-01-13T18:27:25Z

Under heavy write load, we've seen the cl_tasks list grows to millions of entries. Even though the list is extremely long, the system still runs fine until the user wants to get the information of all active RPC tasks by doing: When this happens, tasks_start acquires the cl_lock to walk the cl_tasks list, returning one entry at a time to the caller. The cl_lock is held until all tasks on this list have been processed. While the cl_lock is held, completed RPC tasks have to spin wait in rpc_task_release_client for the cl_lock. If there are millions of entries in the cl_tasks list it will take a long time before tasks_stop is called and the cl_lock is released. The spin wait tasks can use up all the available CPUs in the system, preventing other jobs to run, this causes the system to temporarily lock up. This patch fixes this problem by delaying inserting the RPC task on the cl_tasks list until the RPC call slot is reserved. This limits the length of the cl_tasks to the number of call slots available in the system. Signed-off-by: Dai Ngo Signed-off-by: Anna Schumaker

SUNRPC: introduce cache_check_rcu to help check in rcu context

2025-01-06T14:37:40Z

This is a prepare patch to add cache_check_rcu, will use it with follow patch. Suggested-by: NeilBrown Signed-off-by: Yang Erkun Reviewed-by: Jeff Layton Signed-off-by: Chuck Lever

sunrpc: remove all connection limit configuration

2025-01-06T14:37:36Z

Now that the connection limit only apply to unconfirmed connections, there is no need to configure it. So remove all the configuration and fix the number of unconfirmed connections as always 64 - which is now given a name: XPT_MAX_TMP_CONN Signed-off-by: NeilBrown Reviewed-by: Jeff Layton Signed-off-by: Chuck Lever

nfsd: don't use sv_nrthreads in connection limiting calculations.

2025-01-06T14:37:36Z

The heuristic for limiting the number of incoming connections to nfsd currently uses sv_nrthreads - allowing more connections if more threads were configured. A future patch will allow number of threads to grow dynamically so that there will be no need to configure sv_nrthreads. So we need a different solution for limiting connections. It isn't clear what problem is solved by limiting connections (as mentioned in a code comment) but the most likely problem is a connection storm - many connections that are not doing productive work. These will be closed after about 6 minutes already but it might help to slow down a storm. This patch adds a per-connection flag XPT_PEER_VALID which indicates that the peer has presented a filehandle for which it has some sort of access. i.e the peer is known to be trusted in some way. We now only count connections which have NOT been determined to be valid. There should be relative few of these at any given time. If the number of non-validated peer exceed a limit - currently 64 - we close the oldest non-validated peer to avoid having too many of these useless connections. Note that this patch significantly changes the meaning of the various configuration parameters for "max connections". The next patch will remove all of these. Signed-off-by: NeilBrown Reviewed-by: Jeff Layton Signed-off-by: Chuck Lever