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1035d65446
linux/fs/nfsd
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Chuck Lever 1035d65446 NFSD: Add tracepoints to report NFSv4 callback completions 
Wireshark has always been lousy about dissecting NFSv4 callbacks,
especially NFSv4.0 backchannel requests. Add tracepoints so we
can surgically capture these events in the trace log.

Tracepoints are time-stamped and ordered so that we can now observe
the timing relationship between a CB_RECALL Reply and the client's
DELEGRETURN Call. Example:

            nfsd-1153  [002]   211.986391: nfsd_cb_recall:       addr=192.168.1.67:45767 client 62ea82e4:fee7492a stateid 00000003:00000001

            nfsd-1153  [002]   212.095634: nfsd_compound:        xid=0x0000002c opcnt=2
            nfsd-1153  [002]   212.095647: nfsd_compound_status: op=1/2 OP_PUTFH status=0
            nfsd-1153  [002]   212.095658: nfsd_file_put:        hash=0xf72 inode=0xffff9291148c7410 ref=3 flags=HASHED|REFERENCED may=READ file=0xffff929103b3ea00
            nfsd-1153  [002]   212.095661: nfsd_compound_status: op=2/2 OP_DELEGRETURN status=0
   kworker/u25:8-148   [002]   212.096713: nfsd_cb_recall_done:  client 62ea82e4:fee7492a stateid 00000003:00000001 status=0

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
2022-09-26 14:02:32 -04:00
..
acl.h NFSD: add posix ACLs to struct nfsd_attrs 2022-08-04 10:28:03 -04:00
auth.c
auth.h
blocklayout.c block: remove genhd.h 2022-02-02 07:49:59 -07:00
blocklayoutxdr.c
blocklayoutxdr.h
cache.h nfsd4: make drc_slab global, not per-net 2020-06-01 17:44:45 -04:00
current_stateid.h
export.c fs: add is_idmapped_mnt() helper 2021-12-03 18:44:06 +01:00
export.h nfsd: report per-export stats 2021-01-25 09:36:28 -05:00
fault_inject.c
filecache.c NFSD 6.0 Release Notes 2022-08-09 14:56:49 -07:00
filecache.h NFSD: Ensure nf_inode is never dereferenced 2022-07-29 20:16:56 -04:00
flexfilelayout.c nfsd: use correct format characters 2022-03-17 19:47:38 -04:00
flexfilelayoutxdr.c
flexfilelayoutxdr.h
idmap.h
Kconfig NFSD: Remove CONFIG_NFSD_V3 2022-03-11 10:25:14 -05:00
lockd.c NFSD: simplify struct nfsfh 2021-10-02 15:51:10 -04:00
Makefile NFSD: Remove CONFIG_NFSD_V3 2022-03-11 10:25:14 -05:00
netns.h NFSD: limit the number of v4 clients to 1024 per 1GB of system memory 2022-07-29 20:16:56 -04:00
nfs2acl.c NFSD: use (un)lock_inode instead of fh_(un)lock for file operations 2022-08-04 10:28:41 -04:00
nfs3acl.c NFSD: use (un)lock_inode instead of fh_(un)lock for file operations 2022-08-04 10:28:41 -04:00
nfs3proc.c NFSD: Protect against send buffer overflow in NFSv3 READ 2022-09-26 14:02:30 -04:00
nfs3xdr.c NFSD: Deprecate NFS_OFFSET_MAX 2022-02-09 09:24:40 -05:00
nfs4acl.c NFSD: add posix ACLs to struct nfsd_attrs 2022-08-04 10:28:03 -04:00
nfs4callback.c NFSD: Move copy offload callback arguments into a separate structure 2022-07-29 20:17:00 -04:00
nfs4idmap.c NFSD: move from strlcpy with unused retval to strscpy 2022-09-26 14:02:20 -04:00
nfs4layouts.c NFSD: Add tracepoints to report NFSv4 callback completions 2022-09-26 14:02:32 -04:00
nfs4proc.c NFSD: Add tracepoints to report NFSv4 callback completions 2022-09-26 14:02:32 -04:00
nfs4recover.c nfsd: Propagate some error code returned by memdup_user() 2022-09-26 14:02:22 -04:00
nfs4state.c NFSD: Add tracepoints to report NFSv4 callback completions 2022-09-26 14:02:32 -04:00
nfs4xdr.c nfsd: clean up mounted_on_fileid handling 2022-09-26 14:02:30 -04:00
nfscache.c mm: shrinkers: provide shrinkers with names 2022-07-03 18:08:40 -07:00
nfsctl.c nfsd: silence extraneous printk on nfsd.ko insertion 2022-07-29 20:16:56 -04:00
nfsd.h NFSD: limit the number of v4 clients to 1024 per 1GB of system memory 2022-07-29 20:16:56 -04:00
nfsfh.c NFSD: Replace dprintk() call site in fh_verify() 2022-09-26 14:02:31 -04:00
nfsfh.h NFSD: discard fh_locked flag and fh_lock/fh_unlock 2022-08-04 10:28:48 -04:00
nfsproc.c NFSD: drop fname and flen args from nfsd_create_locked() 2022-09-26 14:02:30 -04:00
nfssvc.c NFSD: move from strlcpy with unused retval to strscpy 2022-09-26 14:02:20 -04:00
nfsxdr.c SUNRPC: Change return value type of .pc_encode 2021-10-13 11:34:49 -04:00
pnfs.h
state.h nfsd: remove nfsd4_prepare_cb_recall() declaration 2022-09-26 14:02:31 -04:00
stats.c nfsd: make nfsd_stats.th_cnt atomic_t 2021-12-13 13:42:51 -05:00
stats.h nfsd: make nfsd_stats.th_cnt atomic_t 2021-12-13 13:42:51 -05:00
trace.c NFSD: Add SPDX header for fs/nfsd/trace.c 2020-11-30 13:00:24 -05:00
trace.h NFSD: Add tracepoints to report NFSv4 callback completions 2022-09-26 14:02:32 -04:00
vfs.c NFSD: drop fname and flen args from nfsd_create_locked() 2022-09-26 14:02:30 -04:00
vfs.h NFSD: drop fname and flen args from nfsd_create_locked() 2022-09-26 14:02:30 -04:00
xdr3.h SUNRPC: Change return value type of .pc_encode 2021-10-13 11:34:49 -04:00
xdr4.h NFSD: Fix handling of oversized NFSv4 COMPOUND requests 2022-09-26 14:02:30 -04:00
xdr4cb.h
xdr.h NFSD: prevent underflow in nfssvc_decode_writeargs() 2022-03-15 09:35:56 -04:00