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nfsd: add tracepoint to nfsd_rename

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Observe the start of RENAME operations for all NFS versions.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Jeff Layton
2025-05-03 15:59:27 -04:00
committed by Chuck Lever
parent 51195263cd
commit b52f2a79fb
2 changed files with 33 additions and 0 deletions
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31
fs/nfsd/trace.h
View File

@@ -2522,6 +2522,37 @@ TRACE_EVENT(nfsd_vfs_unlink,
)
);
TRACE_EVENT(nfsd_vfs_rename,
TP_PROTO(
const struct svc_rqst *rqstp,
const struct svc_fh *sfhp,
const struct svc_fh *tfhp,
const char *source,
unsigned int sourcelen,
const char *target,
unsigned int targetlen
),
TP_ARGS(rqstp, sfhp, tfhp, source, sourcelen, target, targetlen),
TP_STRUCT__entry(
NFSD_TRACE_PROC_CALL_FIELDS(rqstp)
__field(u32, sfh_hash)
__field(u32, tfh_hash)
__string_len(source, source, sourcelen)
__string_len(target, target, targetlen)
),
TP_fast_assign(
NFSD_TRACE_PROC_CALL_ASSIGNMENTS(rqstp);
__entry->sfh_hash = knfsd_fh_hash(&sfhp->fh_handle);
__entry->tfh_hash = knfsd_fh_hash(&tfhp->fh_handle);
__assign_str(source);
__assign_str(target);
),
TP_printk("xid=0x%08x sfh_hash=0x%08x tfh_hash=0x%08x source=%s target=%s",
__entry->xid, __entry->sfh_hash, __entry->tfh_hash,
__get_str(source), __get_str(target)
)
);
#endif /* _NFSD_TRACE_H */
#undef TRACE_INCLUDE_PATH

2
fs/nfsd/vfs.c
View File

@@ -1840,6 +1840,8 @@ nfsd_rename(struct svc_rqst *rqstp, struct svc_fh *ffhp, char *fname, int flen,
int host_err;
bool close_cached = false;
trace_nfsd_vfs_rename(rqstp, ffhp, tfhp, fname, flen, tname, tlen);
err = fh_verify(rqstp, ffhp, S_IFDIR, NFSD_MAY_REMOVE);
if (err)
goto out;