commit c1578b769a644fe1ff3e8324fc404b18f3f01fbe
author Trond Myklebust <Trond.Myklebust@netapp.com> Mon Aug 12 16:58:42 2013 -0400
committer Trond Myklebust <Trond.Myklebust@netapp.com> Thu Aug 22 08:58:23 2013 -0400
tree ce9cd39742f3834148a002c010071785d3bc1a41
parent 078ea3dfe396b18ccf608c71a9585b6f7e519bb1

NFSv4: Add tracepoints for debugging inode manipulations

Set up basic tracepoints for debugging NFSv4 setattr, access,
readlink, readdir, get_acl set_acl get_security_label,
and set_security_label.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/nfs4proc.c

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 3234758..daf0854 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2315,6 +2315,7 @@
 	int err;
 	do {
 		err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel);
+		trace_nfs4_setattr(inode, err);
 		switch (err) {
 		case -NFS4ERR_OPENMODE:
 			if (!(sattr->ia_valid & ATTR_SIZE)) {
@@ -3143,8 +3144,9 @@
 	struct nfs4_exception exception = { };
 	int err;
 	do {
-		err = nfs4_handle_exception(NFS_SERVER(inode),
-				_nfs4_proc_access(inode, entry),
+		err = _nfs4_proc_access(inode, entry);
+		trace_nfs4_access(inode, err);
+		err = nfs4_handle_exception(NFS_SERVER(inode), err,
 				&exception);
 	} while (exception.retry);
 	return err;
@@ -3197,8 +3199,9 @@
 	struct nfs4_exception exception = { };
 	int err;
 	do {
-		err = nfs4_handle_exception(NFS_SERVER(inode),
-				_nfs4_proc_readlink(inode, page, pgbase, pglen),
+		err = _nfs4_proc_readlink(inode, page, pgbase, pglen);
+		trace_nfs4_readlink(inode, err);
+		err = nfs4_handle_exception(NFS_SERVER(inode), err,
 				&exception);
 	} while (exception.retry);
 	return err;
@@ -3630,9 +3633,10 @@
 	struct nfs4_exception exception = { };
 	int err;
 	do {
-		err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode),
-				_nfs4_proc_readdir(dentry, cred, cookie,
-					pages, count, plus),
+		err = _nfs4_proc_readdir(dentry, cred, cookie,
+				pages, count, plus);
+		trace_nfs4_readdir(dentry->d_inode, err);
+		err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), err,
 				&exception);
 	} while (exception.retry);
 	return err;
@@ -4333,6 +4337,7 @@
 	ssize_t ret;
 	do {
 		ret = __nfs4_get_acl_uncached(inode, buf, buflen);
+		trace_nfs4_get_acl(inode, ret);
 		if (ret >= 0)
 			break;
 		ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception);
@@ -4412,8 +4417,9 @@
 	struct nfs4_exception exception = { };
 	int err;
 	do {
-		err = nfs4_handle_exception(NFS_SERVER(inode),
-				__nfs4_proc_set_acl(inode, buf, buflen),
+		err = __nfs4_proc_set_acl(inode, buf, buflen);
+		trace_nfs4_set_acl(inode, err);
+		err = nfs4_handle_exception(NFS_SERVER(inode), err,
 				&exception);
 	} while (exception.retry);
 	return err;
@@ -4466,8 +4472,9 @@
 		return -EOPNOTSUPP;
 
 	do {
-		err = nfs4_handle_exception(NFS_SERVER(inode),
-				_nfs4_get_security_label(inode, buf, buflen),
+		err = _nfs4_get_security_label(inode, buf, buflen);
+		trace_nfs4_get_security_label(inode, err);
+		err = nfs4_handle_exception(NFS_SERVER(inode), err,
 				&exception);
 	} while (exception.retry);
 	return err;
@@ -4519,9 +4526,10 @@
 	int err;
 
 	do {
-		err = nfs4_handle_exception(NFS_SERVER(inode),
-				_nfs4_do_set_security_label(inode, ilabel,
-				fattr, olabel),
+		err = _nfs4_do_set_security_label(inode, ilabel,
+				fattr, olabel);
+		trace_nfs4_set_security_label(inode, err);
+		err = nfs4_handle_exception(NFS_SERVER(inode), err,
 				&exception);
 	} while (exception.retry);
 	return err;