ksmbd: increase session and share hash table bits

Increases the number of bits for the hash table from 3 to 12.
The thousands of sessions and shares can be connected.
So the current 3-bit size can lead to frequent hash collisions.

Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

Author: namjaejeon

fs/smb/server/mgmt/share_config.c

@@ -19,7 +19,7 @@
 #include "../transport_ipc.h"
 #include "../misc.h"
 
-#define SHARE_HASH_BITS		3
+#define SHARE_HASH_BITS		12
 static DEFINE_HASHTABLE(shares_table, SHARE_HASH_BITS);
 static DECLARE_RWSEM(shares_table_lock);
 

fs/smb/server/mgmt/user_session.c

@@ -18,7 +18,7 @@
 
 static DEFINE_IDA(session_ida);
 
-#define SESSION_HASH_BITS		3
+#define SESSION_HASH_BITS		12
 static DEFINE_HASHTABLE(sessions_table, SESSION_HASH_BITS);
 static DECLARE_RWSEM(sessions_table_lock);