NFSv4.1/pnfs: Add a tracepoint for return-on-close events

Allow tracing of return-on-close. Signed-off-by: Trond Myklebust <[email protected]>
kmaincent · Aug 25, 2015 · 6a463be · 6a463be
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commit 6a463be
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diff --git a/fs/nfs/nfs4trace.h b/fs/nfs/nfs4trace.h
@@ -1136,6 +1136,7 @@ TRACE_EVENT(nfs4_layoutget,
 
 DEFINE_NFS4_INODE_EVENT(nfs4_layoutcommit);
 DEFINE_NFS4_INODE_EVENT(nfs4_layoutreturn);
+DEFINE_NFS4_INODE_EVENT(nfs4_layoutreturn_on_close);
 
 #endif /* CONFIG_NFS_V4_1 */
 

diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
@@ -1144,6 +1144,7 @@ void pnfs_roc_set_barrier(struct inode *ino, u32 barrier)
 	if (pnfs_seqid_is_newer(barrier, lo->plh_barrier))
 		lo->plh_barrier = barrier;
 	spin_unlock(&ino->i_lock);
+	trace_nfs4_layoutreturn_on_close(ino, 0);
 }
 
 void pnfs_roc_get_barrier(struct inode *ino, u32 *barrier)