From 11f0402a74640c6f32ae18c58b60d9d57932deab Mon Sep 17 00:00:00 2001
From: Jeremy Allison <jra@samba.org>
Date: Wed, 5 Sep 2001 22:45:48 +0000
Subject: Fix I think for the fcntl spinning problem. Re-prioritize so that
 oplock break messages get priority over incoming client messages. Jeremy.
 (This used to be commit 1779f6a223dad87c3b8451d09b9808b46495a8b6)

---
 source3/smbd/oplock.c  | 14 ++++++++++++++
 source3/smbd/process.c |  8 +++++++-
 2 files changed, 21 insertions(+), 1 deletion(-)

(limited to 'source3/smbd')

diff --git a/source3/smbd/oplock.c b/source3/smbd/oplock.c
index 26d193e2c2..7033eddc16 100644
--- a/source3/smbd/oplock.c
+++ b/source3/smbd/oplock.c
@@ -48,6 +48,20 @@ int32 get_number_of_exclusive_open_oplocks(void)
   return exclusive_oplocks_open;
 }
 
+/****************************************************************************
+ Return True if an oplock message is pending.
+****************************************************************************/
+
+BOOL oplock_message_waiting(fd_set *fds)
+{
+	if (koplocks && koplocks->msg_waiting(fds))
+		return True;
+
+	if (FD_ISSET(oplock_sock, fds))
+		return True;
+
+	return False;
+}
 
 /****************************************************************************
  Read an oplock break message from either the oplock UDP fd or the
diff --git a/source3/smbd/process.c b/source3/smbd/process.c
index ce1e855e29..9f23c7d3be 100644
--- a/source3/smbd/process.c
+++ b/source3/smbd/process.c
@@ -223,7 +223,13 @@ static BOOL receive_message_or_smb(char *buffer, int buffer_len, int timeout)
 		return False;
 	}
 
-	if (!FD_ISSET(smbd_server_fd(),&fds) || selrtn > 1) {
+	/*
+	 * Ensure we process oplock break messages by preference.
+	 * This is IMPORTANT ! Otherwise we can starve other processes
+	 * sending us an oplock break message. JRA.
+	 */
+
+	if (oplock_message_waiting(&fds)) {
 		async_processing(&fds, buffer, buffer_len);
 		if (!FD_ISSET(smbd_server_fd(),&fds)) goto again;
 	}
-- 
cgit