Commit b52f2a79 authored by Jeff Layton's avatar Jeff Layton Committed by Chuck Lever
Browse files

nfsd: add tracepoint to nfsd_rename 



Observe the start of RENAME operations for all NFS versions.

Signed-off-by: default avatarJeff Layton <jlayton@kernel.org>
Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
parent 51195263

fs/nfsd/trace.h

+31 −0
Original line number Diff line number Diff line
@@ -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

fs/nfsd/vfs.c

+2 −0
Original line number Diff line number Diff line
@@ -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;