Merge bk://ldm.bkbits.net/linux-2.5

into home.transmeta.com:/home/torvalds/v2.5/linux

10 files changed, 52 insertions, 12 deletions

diff --git a/include/asm-i386/io.h b/include/asm-i386/io.h
index b2afa09c062f..41bc8ef0bdf8 100644
--- a/include/asm-i386/io.h
+++ b/include/asm-i386/io.h
@@ -40,7 +40,6 @@
 
 #define XQUAD_PORTIO_BASE 0xfe400000
 #define XQUAD_PORTIO_QUAD 0x40000  /* 256k per quad. */
-#define XQUAD_PORTIO_LEN  0x80000  /* Only remapping first 2 quads */
 
 #ifdef __KERNEL__
 
diff --git a/include/asm-i386/semaphore.h b/include/asm-i386/semaphore.h
index a0ce1b8dba69..9c456727e8a3 100644
--- a/include/asm-i386/semaphore.h
+++ b/include/asm-i386/semaphore.h
@@ -116,7 +116,7 @@ static inline void down(struct semaphore * sem)
 #if WAITQUEUE_DEBUG
 	CHECK_MAGIC(sem->__magic);
 #endif
-
+	might_sleep();
 	__asm__ __volatile__(
 		"# atomic down operation\n\t"
 		LOCK "decl %0\n\t"     /* --sem->count */
@@ -142,7 +142,7 @@ static inline int down_interruptible(struct semaphore * sem)
 #if WAITQUEUE_DEBUG
 	CHECK_MAGIC(sem->__magic);
 #endif
-
+	might_sleep();
 	__asm__ __volatile__(
 		"# atomic interruptible down operation\n\t"
 		LOCK "decl %1\n\t"     /* --sem->count */
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index f99a03f17e60..a64a657545fe 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -186,7 +186,7 @@ extern int shrink_dcache_memory(int, unsigned int);
 extern void prune_dcache(int);
 
 /* icache memory management (defined in linux/fs/inode.c) */
-extern int shrink_icache_memory(int, int);
+extern int shrink_icache_memory(int, unsigned int);
 extern void prune_icache(int);
 
 /* quota cache memory management (defined in linux/fs/dquot.c) */
diff --git a/include/linux/elevator.h b/include/linux/elevator.h
index e98168f92e67..c5cc69788530 100644
--- a/include/linux/elevator.h
+++ b/include/linux/elevator.h
@@ -52,12 +52,10 @@ extern inline struct list_head *elv_get_sort_head(request_queue_t *, struct requ
 extern elevator_t elevator_noop;
 
 /*
- * elevator linus. based on linus ideas of starvation control, using
- * sequencing to manage inserts and merges.
+ * deadline i/o scheduler. uses request time outs to prevent indefinite
+ * starvation
  */
-extern elevator_t elevator_linus;
-#define elv_linus_sequence(rq)	((long)(rq)->elevator_private)
-#define ELV_LINUS_SEEK_COST	16
+extern elevator_t iosched_deadline;
 
 /*
  * use the /proc/iosched interface, all the below is history ->
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 5efa540d55f8..44c38b134498 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -40,6 +40,13 @@
 
 struct completion;
 
+#ifdef CONFIG_DEBUG_KERNEL
+void __might_sleep(char *file, int line);
+#define might_sleep() __might_sleep(__FILE__, __LINE__)
+#else
+#define might_sleep() do {} while(0)
+#endif
+
 extern struct notifier_block *panic_notifier_list;
 NORET_TYPE void panic(const char * fmt, ...)
 	__attribute__ ((NORET_AND format (printf, 1, 2)));
diff --git a/include/linux/mm.h b/include/linux/mm.h
index c63e4947387f..482db998aca7 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -524,6 +524,7 @@ extern struct vm_area_struct *find_extend_vma(struct mm_struct *mm, unsigned lon
 
 extern struct page * vmalloc_to_page(void *addr);
 extern unsigned long get_page_cache_size(void);
+extern unsigned int nr_used_zone_pages(void);
 
 #endif /* __KERNEL__ */
 
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 43390b2e2ef4..bfc986131fe6 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -74,9 +74,15 @@ static inline void ___add_to_page_cache(struct page *page,
 	inc_page_state(nr_pagecache);
 }
 
-extern void FASTCALL(lock_page(struct page *page));
+extern void FASTCALL(__lock_page(struct page *page));
 extern void FASTCALL(unlock_page(struct page *page));
 
+static inline void lock_page(struct page *page)
+{
+	if (TestSetPageLocked(page))
+		__lock_page(page);
+}
+	
 /*
  * This is exported only for wait_on_page_locked/wait_on_page_writeback.
  * Never use this directly!
diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h
index 4a7e2bb0d7c4..bfb988885002 100644
--- a/include/linux/rwsem.h
+++ b/include/linux/rwsem.h
@@ -40,6 +40,7 @@ extern void FASTCALL(rwsemtrace(struct rw_semaphore *sem, const char *str));
  */
 static inline void down_read(struct rw_semaphore *sem)
 {
+	might_sleep();
 	rwsemtrace(sem,"Entering down_read");
 	__down_read(sem);
 	rwsemtrace(sem,"Leaving down_read");
@@ -62,6 +63,7 @@ static inline int down_read_trylock(struct rw_semaphore *sem)
  */
 static inline void down_write(struct rw_semaphore *sem)
 {
+	might_sleep();
 	rwsemtrace(sem,"Entering down_write");
 	__down_write(sem);
 	rwsemtrace(sem,"Leaving down_write");
diff --git a/include/linux/sched.h b/include/linux/sched.h
index f1346010d73e..471dcb9c108d 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -100,8 +100,9 @@ extern unsigned long nr_uninterruptible(void);
 #define TASK_RUNNING		0
 #define TASK_INTERRUPTIBLE	1
 #define TASK_UNINTERRUPTIBLE	2
-#define TASK_ZOMBIE		4
-#define TASK_STOPPED		8
+#define TASK_STOPPED		4
+#define TASK_ZOMBIE		8
+#define TASK_DEAD		16
 
 #define __set_task_state(tsk, state_value)		\
 	do { (tsk)->state = (state_value); } while (0)
diff --git a/include/linux/wait.h b/include/linux/wait.h
index 8664b02f230d..b6ce459f8792 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -119,6 +119,32 @@ static inline void __remove_wait_queue(wait_queue_head_t *head,
 		_raced;						\
 	})
 
+/*
+ * Waitqueue's which are removed from the waitqueue_head at wakeup time
+ */
+void FASTCALL(prepare_to_wait(wait_queue_head_t *q,
+				wait_queue_t *wait, int state));
+void FASTCALL(prepare_to_wait_exclusive(wait_queue_head_t *q,
+				wait_queue_t *wait, int state));
+void FASTCALL(finish_wait(wait_queue_head_t *q, wait_queue_t *wait));
+int autoremove_wake_function(wait_queue_t *wait, unsigned mode, int sync);
+
+#define DEFINE_WAIT(name)						\
+	wait_queue_t name = {						\
+		.task		= current,				\
+		.func		= autoremove_wake_function,		\
+		.task_list	= {	.next = &name.task_list,	\
+					.prev = &name.task_list,	\
+				},					\
+	}
+
+#define init_wait(wait)							\
+	do {								\
+		wait->task = current;					\
+		wait->func = autoremove_wake_function;			\
+		INIT_LIST_HEAD(&wait->task_list);			\
+	} while (0)
+	
 #endif /* __KERNEL__ */
 
 #endif