[PATCH 5/5] CIFS: Move add/set_credits and get_credits_field to ops structure

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Signed-off-by: Pavel Shilovsky <piastry@xxxxxxxxxxx>
---
 fs/cifs/cifsglob.h  |   25 +++++++++++++++----------
 fs/cifs/cifsproto.h |    3 ---
 fs/cifs/misc.c      |   19 -------------------
 fs/cifs/smb1ops.c   |   28 ++++++++++++++++++++++++++++
 fs/cifs/transport.c |    3 ++-
 5 files changed, 45 insertions(+), 33 deletions(-)

diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 7b3e8fe..d17db87 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -167,6 +167,9 @@ struct smb_version_operations {
 			     struct mid_q_entry **);
 	int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *,
 			     bool);
+	void (*add_credits)(struct TCP_Server_Info *, const unsigned int);
+	void (*set_credits)(struct TCP_Server_Info *, const int);
+	int * (*get_credits_field)(struct TCP_Server_Info *);
 	unsigned int (*read_data_offset)(char *);
 	unsigned int (*read_data_length)(char *);
 	int (*map_error)(char *, bool);
@@ -367,16 +370,6 @@ in_flight(struct TCP_Server_Info *server)
 	return num;
 }
 
-static inline int*
-get_credits_field(struct TCP_Server_Info *server)
-{
-	/*
-	 * This will change to switch statement when we reserve slots for echos
-	 * and oplock breaks.
-	 */
-	return &server->credits;
-}
-
 static inline bool
 has_credits(struct TCP_Server_Info *server, int *credits)
 {
@@ -387,6 +380,18 @@ has_credits(struct TCP_Server_Info *server, int *credits)
 	return num > 0;
 }
 
+static inline void
+cifs_add_credits(struct TCP_Server_Info *server, const unsigned int add)
+{
+	server->ops->add_credits(server, add);
+}
+
+static inline void
+cifs_set_credits(struct TCP_Server_Info *server, const int val)
+{
+	server->ops->set_credits(server, val);
+}
+
 /*
  * Macros to allow the TCP_Server_Info->net field and related code to drop out
  * when CONFIG_NET_NS isn't set.
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 57af642..5ec21ec 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -90,9 +90,6 @@ extern int SendReceiveBlockingLock(const unsigned int xid,
 			struct smb_hdr *in_buf ,
 			struct smb_hdr *out_buf,
 			int *bytes_returned);
-extern void cifs_add_credits(struct TCP_Server_Info *server,
-			     const unsigned int add);
-extern void cifs_set_credits(struct TCP_Server_Info *server, const int val);
 extern int checkSMB(char *buf, unsigned int length);
 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
 extern bool backup_cred(struct cifs_sb_info *);
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index d2bb1e7..e2552d2 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -653,22 +653,3 @@ backup_cred(struct cifs_sb_info *cifs_sb)
 
 	return false;
 }
-
-void
-cifs_add_credits(struct TCP_Server_Info *server, const unsigned int add)
-{
-	spin_lock(&server->req_lock);
-	server->credits += add;
-	server->in_flight--;
-	spin_unlock(&server->req_lock);
-	wake_up(&server->request_q);
-}
-
-void
-cifs_set_credits(struct TCP_Server_Info *server, const int val)
-{
-	spin_lock(&server->req_lock);
-	server->credits = val;
-	server->oplocks = val > 1 ? enable_oplocks : false;
-	spin_unlock(&server->req_lock);
-}
diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
index 8a0b35b..17a69ed 100644
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -102,11 +102,39 @@ cifs_find_mid(struct TCP_Server_Info *server, char *buffer)
 	return NULL;
 }
 
+static void
+_cifs_add_credits(struct TCP_Server_Info *server, const unsigned int add)
+{
+	spin_lock(&server->req_lock);
+	server->credits += add;
+	server->in_flight--;
+	spin_unlock(&server->req_lock);
+	wake_up(&server->request_q);
+}
+
+static void
+_cifs_set_credits(struct TCP_Server_Info *server, const int val)
+{
+	spin_lock(&server->req_lock);
+	server->credits = val;
+	server->oplocks = val > 1 ? enable_oplocks : false;
+	spin_unlock(&server->req_lock);
+}
+
+static int *
+cifs_get_credits_field(struct TCP_Server_Info *server)
+{
+	return &server->credits;
+}
+
 struct smb_version_operations smb1_operations = {
 	.send_cancel = send_nt_cancel,
 	.compare_fids = cifs_compare_fids,
 	.setup_request = cifs_setup_request,
 	.check_receive = cifs_check_receive,
+	.add_credits = _cifs_add_credits,
+	.set_credits = _cifs_set_credits,
+	.get_credits_field = cifs_get_credits_field,
 	.read_data_offset = cifs_read_data_offset,
 	.read_data_length = cifs_read_data_length,
 	.map_error = map_smb_to_linux_error,
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 87bd998..64c35fd 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -304,7 +304,8 @@ wait_for_free_credits(struct TCP_Server_Info *server, const int optype,
 static int
 wait_for_free_request(struct TCP_Server_Info *server, const int optype)
 {
-	return wait_for_free_credits(server, optype, get_credits_field(server));
+	return wait_for_free_credits(server, optype,
+				     server->ops->get_credits_field(server));
 }
 
 static int allocate_mid(struct cifs_ses *ses, struct smb_hdr *in_buf,
-- 
1.7.1

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