The following changes since commit 82f2b0b97b36ee3fcddf0f0780a9a0825d52fec3: Linux 6.15-rc6 (2025-05-11 14:54:11 -0700) are available in the Git repository at: https://git.kernel.org/pub/scm/linux/kernel/git/cel/linux.git tags/nfsd-6.16 for you to fetch changes up to 425364dc49f050b6008b43408aa96d42105a9c1d: xdrgen: Fix code generated for counted arrays (2025-05-16 10:58:48 -0400) ---------------------------------------------------------------- NFSD 6.16 Release Notes The marquee feature for this release is that the limit on the maximum rsize and wsize has been raised to 4MB. The default remains at 1MB, but risk-seeking administrators now have the ability to try larger I/O sizes with NFS clients that support them. Eventually the default setting will be increased when we have confidence that this change will not have negative impact. With v6.16, NFSD now has its own debugfs file system where we can add experimental features and make them available outside of our development community without impacting production deployments. The first experimental setting added is one that makes all NFS READ operations use vfs_iter_read() instead of the NFSD splice actor. The plan is to eventually retire the splice actor, as that will enable a number of new capabilities such as the use of struct bio_vec from the top to the bottom of the NFSD stack. Jeff Layton contributed a number of observability improvements. The use of dprintk() in a number of high-traffic code paths has been replaced with static trace points. This release sees the continuation of efforts to harden the NFSv4.2 COPY operation. Soon, the restriction on async COPY operations can be lifted. Many thanks to the contributors, reviewers, testers, and bug reporters who participated during the v6.16 development cycle. ---------------------------------------------------------------- Chuck Lever (32): NFSD: OFFLOAD_CANCEL should mark an async COPY as completed NFSD: Shorten CB_OFFLOAD response to NFS4ERR_DELAY NFSD: Implement CB_SEQUENCE referring call lists NFSD: Implement CB_SEQUENCE referring call lists NFSD: Record each NFSv4 call's session slot index NFSD: Add /sys/kernel/debug/nfsd NFSD: Add experimental setting to disable the use of splice read MAINTAINERS: Update Neil Brown's email address svcrdma: Unregister the device if svc_rdma_accept() fails NFSD: Implement FATTR4_CLONE_BLKSIZE attribute NFSD: Use sockaddr instead of a generic array NFSD: Add a Call equivalent to the NFSD_TRACE_PROC_RES macros svcrdma: Reduce the number of rdma_rw contexts per-QP sunrpc: Add a helper to derive maxpages from sv_max_mesg sunrpc: Remove backchannel check in svc_init_buffer() sunrpc: Replace the rq_pages array with dynamically-allocated memory sunrpc: Replace the rq_bvec array with dynamically-allocated memory NFSD: Use rqstp->rq_bvec in nfsd_iter_read() NFSD: De-duplicate the svc_fill_write_vector() call sites SUNRPC: Export xdr_buf_to_bvec() NFSD: Use rqstp->rq_bvec in nfsd_iter_write() SUNRPC: Remove svc_fill_write_vector() SUNRPC: Remove svc_rqst :: rq_vec sunrpc: Adjust size of socket's receive page array dynamically svcrdma: Adjust the number of entries in svc_rdma_recv_ctxt::rc_pages svcrdma: Adjust the number of entries in svc_rdma_send_ctxt::sc_pages sunrpc: Remove the RPCSVC_MAXPAGES macro NFSD: Remove NFSD_BUFSIZE NFSD: Remove NFSSVC_MAXBLKSIZE_V2 macro NFSD: Add a "default" block size SUNRPC: Bump the maximum payload size for the server xdrgen: Fix code generated for counted arrays Eric Biggers (1): nfsd: use SHA-256 library API instead of crypto_shash API Guoqing Jiang (1): nfsd: remove redundant WARN_ON_ONCE in nfsd4_write Jeff Layton (19): nfsd: add commit start/done tracepoints around nfsd_commit() sunrpc: add info about xprt queue times to svc_xprt_dequeue tracepoint sunrpc: allow SOMAXCONN backlogged TCP connections nfsd: add a tracepoint for nfsd_setattr nfsd: add a tracepoint to nfsd_lookup_dentry nfsd: add nfsd_vfs_create tracepoints nfsd: add tracepoint to nfsd_symlink nfsd: add tracepoint to nfsd_link() nfsd: add tracepoints for unlink events nfsd: add tracepoint to nfsd_rename nfsd: add tracepoint to nfsd_readdir nfsd: add tracepoint for getattr and statfs events nfsd: remove old v2/3 create path dprintks nfsd: remove old v2/3 SYMLINK dprintks nfsd: remove old LINK dprintks nfsd: remove REMOVE/RMDIR dprintks nfsd: remove dprintks for v2/3 RENAME events nfsd: remove legacy READDIR dprintks nfsd: remove legacy dprintks from GETATTR and STATFS codepaths Li Lingfeng (1): nfsd: Initialize ssc before laundromat_work to prevent NULL dereference Long Li (2): sunrpc: update nextcheck time when adding new cache entries sunrpc: fix race in cache cleanup causing stale nextcheck time Maninder Singh (2): NFSD: unregister filesystem in case genl_register_family() fails NFSD: fix race between nfsd registration and exports_proc NeilBrown (1): nfsd: nfsd4_spo_must_allow() must check this is a v4 compound request Olga Kornievskaia (1): nfsd: fix access checking for NLM under XPRTSEC policies .mailmap | 2 + MAINTAINERS | 2 +- fs/nfsd/Kconfig | 2 +- fs/nfsd/Makefile | 1 + fs/nfsd/debugfs.c | 47 ++++ fs/nfsd/export.c | 3 +- fs/nfsd/nfs3proc.c | 68 +---- fs/nfsd/nfs4callback.c | 132 ++++++++- fs/nfsd/nfs4proc.c | 35 ++- fs/nfsd/nfs4recover.c | 61 +---- fs/nfsd/nfs4state.c | 40 +-- fs/nfsd/nfs4xdr.c | 21 +- fs/nfsd/nfsctl.c | 25 +- fs/nfsd/nfsd.h | 34 +-- fs/nfsd/nfsproc.c | 48 +--- fs/nfsd/nfssvc.c | 8 +- fs/nfsd/nfsxdr.c | 4 +- fs/nfsd/state.h | 23 ++ fs/nfsd/trace.h | 302 ++++++++++++++++++++- fs/nfsd/vfs.c | 90 ++++-- fs/nfsd/vfs.h | 10 +- fs/nfsd/xdr4.h | 4 + fs/nfsd/xdr4cb.h | 5 +- include/linux/sunrpc/svc.h | 46 ++-- include/linux/sunrpc/svc_rdma.h | 6 +- include/linux/sunrpc/svc_xprt.h | 1 + include/linux/sunrpc/svcsock.h | 4 +- include/trace/events/sunrpc.h | 13 +- include/trace/misc/fs.h | 21 ++ net/sunrpc/cache.c | 17 +- net/sunrpc/svc.c | 80 ++---- net/sunrpc/svc_xprt.c | 11 +- net/sunrpc/svcsock.c | 17 +- net/sunrpc/xdr.c | 1 + net/sunrpc/xprtrdma/svc_rdma_recvfrom.c | 8 +- net/sunrpc/xprtrdma/svc_rdma_rw.c | 2 +- net/sunrpc/xprtrdma/svc_rdma_sendto.c | 16 +- net/sunrpc/xprtrdma/svc_rdma_transport.c | 15 +- .../C/pointer/encoder/variable_length_array.j2 | 2 + .../C/struct/encoder/variable_length_array.j2 | 2 + .../C/union/decoder/variable_length_array.j2 | 2 + 41 files changed, 849 insertions(+), 382 deletions(-) create mode 100644 fs/nfsd/debugfs.c
