Patch "NFSD: Move nfsd_file_trace_alloc() tracepoint" has been added to the 5.10-stable tree

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This is a note to let you know that I've just added the patch titled

    NFSD: Move nfsd_file_trace_alloc() tracepoint

to the 5.10-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     nfsd-move-nfsd_file_trace_alloc-tracepoint.patch
and it can be found in the queue-5.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 9d097afa51f18a7f6b6e54f61b0b3cc7425a73fb
Author: Chuck Lever <chuck.lever@xxxxxxxxxx>
Date:   Fri Jul 8 14:26:49 2022 -0400

    NFSD: Move nfsd_file_trace_alloc() tracepoint
    
    [ Upstream commit b40a2839470cd62ed68c4a32d72a18ee8975b1ac ]
    
    Avoid recording the allocation of an nfsd_file item that is
    immediately released because a matching item was already
    inserted in the hash.
    
    Reviewed-by: Jeff Layton <jlayton@xxxxxxxxxx>
    Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c
index 85813affb8abf..26cfae138b906 100644
--- a/fs/nfsd/filecache.c
+++ b/fs/nfsd/filecache.c
@@ -302,7 +302,6 @@ nfsd_file_alloc(struct nfsd_file_lookup_key *key, unsigned int may)
 		refcount_set(&nf->nf_ref, 2);
 		nf->nf_may = key->need;
 		nf->nf_mark = NULL;
-		trace_nfsd_file_alloc(nf);
 	}
 	return nf;
 }
@@ -1125,6 +1124,7 @@ nfsd_file_do_acquire(struct svc_rqst *rqstp, struct svc_fh *fhp,
 	return status;
 
 open_file:
+	trace_nfsd_file_alloc(nf);
 	nf->nf_mark = nfsd_file_mark_find_or_create(nf);
 	if (nf->nf_mark) {
 		if (open) {
diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h
index ce391ba2f1ca5..22c1fb735f1a7 100644
--- a/fs/nfsd/trace.h
+++ b/fs/nfsd/trace.h
@@ -739,12 +739,35 @@ DEFINE_EVENT(nfsd_file_class, name, \
 	TP_PROTO(struct nfsd_file *nf), \
 	TP_ARGS(nf))
 
-DEFINE_NFSD_FILE_EVENT(nfsd_file_alloc);
 DEFINE_NFSD_FILE_EVENT(nfsd_file_put_final);
 DEFINE_NFSD_FILE_EVENT(nfsd_file_unhash);
 DEFINE_NFSD_FILE_EVENT(nfsd_file_put);
 DEFINE_NFSD_FILE_EVENT(nfsd_file_unhash_and_dispose);
 
+TRACE_EVENT(nfsd_file_alloc,
+	TP_PROTO(
+		const struct nfsd_file *nf
+	),
+	TP_ARGS(nf),
+	TP_STRUCT__entry(
+		__field(const void *, nf_inode)
+		__field(unsigned long, nf_flags)
+		__field(unsigned long, nf_may)
+		__field(unsigned int, nf_ref)
+	),
+	TP_fast_assign(
+		__entry->nf_inode = nf->nf_inode;
+		__entry->nf_flags = nf->nf_flags;
+		__entry->nf_ref = refcount_read(&nf->nf_ref);
+		__entry->nf_may = nf->nf_may;
+	),
+	TP_printk("inode=%p ref=%u flags=%s may=%s",
+		__entry->nf_inode, __entry->nf_ref,
+		show_nf_flags(__entry->nf_flags),
+		show_nfsd_may_flags(__entry->nf_may)
+	)
+);
+
 TRACE_EVENT(nfsd_file_acquire,
 	TP_PROTO(
 		const struct svc_rqst *rqstp,




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