[PATCH] epoll bits 0.46 ...

- A more uniform poll queueing interface with tips from Manfred

- The f_op->poll() is done outside the irqlock to maintain compatibility
	with existing drivers that assume to be called with irq enabled

- Moved event mask setting inside ep_modify() with tips from John

- Fixed locking to fit the new "poll() outside the lock" approach

- Bufferd userspace event delivery to reduce irq_lock/irq_unlock switching
	rate and to reduce the number of __copy_to_user()

- Comments added

fs/select.c

@@ -54,7 +54,7 @@ struct poll_table_page {
  * poll table.
  */
 
-void poll_freewait(poll_table* pt)
+void __pollfreewait(poll_table* pt)
 {
 	struct poll_table_page * p = pt->table;
 	while (p) {

include/linux/poll.h

@@ -14,14 +14,17 @@ struct poll_table_page;
 struct poll_table_struct;
 
 typedef void (*poll_queue_proc)(struct file *, wait_queue_head_t *, struct poll_table_struct *);
+typedef void (*poll_free_proc)(struct poll_table_struct *);
 
 typedef struct poll_table_struct {
 	poll_queue_proc qproc;
+	poll_free_proc fproc;
 	int error;
 	struct poll_table_page * table;
 } poll_table;
 
 extern void __pollwait(struct file * filp, wait_queue_head_t * wait_address, poll_table *p);
+extern void __pollfreewait(poll_table* pt);
 
 static inline void poll_wait(struct file * filp, wait_queue_head_t * wait_address, poll_table *p)
 {
@@ -29,9 +32,10 @@ static inline void poll_wait(struct file * filp, wait_queue_head_t * wait_addres
 		p->qproc(filp, wait_address, p);
 }
 
-static inline void poll_initwait_ex(poll_table* pt, poll_queue_proc qproc)
+static inline void poll_initwait_ex(poll_table* pt, poll_queue_proc qproc, poll_free_proc fproc)
 {
 	pt->qproc = qproc;
+	pt->fproc = fproc;
 	pt->error = 0;
 	pt->table = NULL;
 }
@@ -39,10 +43,15 @@ static inline void poll_initwait_ex(poll_table* pt, poll_queue_proc qproc)
 static inline void poll_initwait(poll_table* pt)
 {
 
-	poll_initwait_ex(pt, __pollwait);
+	poll_initwait_ex(pt, __pollwait, __pollfreewait);
 }
 
-extern void poll_freewait(poll_table* pt);
+static inline void poll_freewait(poll_table* pt)
+{
+
+	if (pt && pt->fproc)
+		pt->fproc(pt);
+}
 
 
 /*

kernel/ksyms.c

@@ -269,7 +269,7 @@ EXPORT_SYMBOL(generic_file_llseek);
 EXPORT_SYMBOL(remote_llseek);
 EXPORT_SYMBOL(no_llseek);
 EXPORT_SYMBOL(__pollwait);
-EXPORT_SYMBOL(poll_freewait);
+EXPORT_SYMBOL(__pollfreewait);
 EXPORT_SYMBOL(ROOT_DEV);
 EXPORT_SYMBOL(find_get_page);
 EXPORT_SYMBOL(find_lock_page);