Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  Revert "relay: fix splice problem"
  docbook: fix bio missing parameter
  block: use unitialized_var() in bio_alloc_bioset()
  block: avoid duplicate calls to get_part() in disk stat code
  cfq-iosched: make io priorities inherit CPU scheduling class as well as nice
  block: optimize generic_unplug_device()
  block: get rid of likely/unlikely predictions in merge logic
  vfs: splice remove_suid() cleanup
  cfq-iosched: fix RCU race in the cfq io_context destructor handling
  block: adjust tagging function queue bit locking
  block: sysfs store function needs to grab queue_lock and use queue_flag_*()

3 files changed, 32 insertions, 18 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 7e0fa9e6447..f413085f748 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1816,7 +1816,6 @@ extern void iget_failed(struct inode *);
 extern void clear_inode(struct inode *);
 extern void destroy_inode(struct inode *);
 extern struct inode *new_inode(struct super_block *);
-extern int __remove_suid(struct dentry *, int);
 extern int should_remove_suid(struct dentry *);
 extern int remove_suid(struct dentry *);
 
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index ecd2bf63fc8..e9874e7fcdf 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -178,17 +178,17 @@ static inline struct hd_struct *get_part(struct gendisk *gendiskp,
 
 static inline void disk_stat_set_all(struct gendisk *gendiskp, int value)	{
 	int i;
+
 	for_each_possible_cpu(i)
 		memset(per_cpu_ptr(gendiskp->dkstats, i), value,
-				sizeof (struct disk_stats));
+				sizeof(struct disk_stats));
 }		
 
 #define __part_stat_add(part, field, addnd)				\
 	(per_cpu_ptr(part->dkstats, smp_processor_id())->field += addnd)
 
-#define __all_stat_add(gendiskp, field, addnd, sector)		\
+#define __all_stat_add(gendiskp, part, field, addnd, sector)	\
 ({								\
-	struct hd_struct *part = get_part(gendiskp, sector);	\
 	if (part)						\
 		__part_stat_add(part, field, addnd);		\
 	__disk_stat_add(gendiskp, field, addnd);		\
@@ -203,11 +203,13 @@ static inline void disk_stat_set_all(struct gendisk *gendiskp, int value)	{
 	res;								\
 })
 
-static inline void part_stat_set_all(struct hd_struct *part, int value)	{
+static inline void part_stat_set_all(struct hd_struct *part, int value)
+{
 	int i;
+
 	for_each_possible_cpu(i)
 		memset(per_cpu_ptr(part->dkstats, i), value,
-		       sizeof(struct disk_stats));
+				sizeof(struct disk_stats));
 }
 				
 #else /* !CONFIG_SMP */
@@ -223,9 +225,8 @@ static inline void disk_stat_set_all(struct gendisk *gendiskp, int value)
 #define __part_stat_add(part, field, addnd) \
 	(part->dkstats.field += addnd)
 
-#define __all_stat_add(gendiskp, field, addnd, sector)		\
+#define __all_stat_add(gendiskp, part, field, addnd, sector)	\
 ({								\
-	struct hd_struct *part = get_part(gendiskp, sector);	\
 	if (part)						\
 		part->dkstats.field += addnd;			\
 	__disk_stat_add(gendiskp, field, addnd);		\
@@ -276,10 +277,10 @@ static inline void part_stat_set_all(struct hd_struct *part, int value)
 #define part_stat_sub(gendiskp, field, subnd) \
 		part_stat_add(gendiskp, field, -subnd)
 
-#define all_stat_add(gendiskp, field, addnd, sector)		\
+#define all_stat_add(gendiskp, part, field, addnd, sector)	\
 	do {							\
 		preempt_disable();				\
-		__all_stat_add(gendiskp, field, addnd, sector);	\
+		__all_stat_add(gendiskp, part, field, addnd, sector);	\
 		preempt_enable();				\
 	} while (0)
 
@@ -288,15 +289,15 @@ static inline void part_stat_set_all(struct hd_struct *part, int value)
 #define all_stat_dec(gendiskp, field, sector) \
 		all_stat_add(gendiskp, field, -1, sector)
 
-#define __all_stat_inc(gendiskp, field, sector) \
-		__all_stat_add(gendiskp, field, 1, sector)
-#define all_stat_inc(gendiskp, field, sector) \
-		all_stat_add(gendiskp, field, 1, sector)
+#define __all_stat_inc(gendiskp, part, field, sector) \
+		__all_stat_add(gendiskp, part, field, 1, sector)
+#define all_stat_inc(gendiskp, part, field, sector) \
+		all_stat_add(gendiskp, part, field, 1, sector)
 
-#define __all_stat_sub(gendiskp, field, subnd, sector) \
-		__all_stat_add(gendiskp, field, -subnd, sector)
-#define all_stat_sub(gendiskp, field, subnd, sector) \
-		all_stat_add(gendiskp, field, -subnd, sector)
+#define __all_stat_sub(gendiskp, part, field, subnd, sector) \
+		__all_stat_add(gendiskp, part, field, -subnd, sector)
+#define all_stat_sub(gendiskp, part, field, subnd, sector) \
+		all_stat_add(gendiskp, part, field, -subnd, sector)
 
 /* Inlines to alloc and free disk stats in struct gendisk */
 #ifdef  CONFIG_SMP
diff --git a/include/linux/ioprio.h b/include/linux/ioprio.h
index 2a3bb1bb743..f98a656b17e 100644
--- a/include/linux/ioprio.h
+++ b/include/linux/ioprio.h
@@ -68,6 +68,20 @@ static inline int task_nice_ioprio(struct task_struct *task)
 }
 
 /*
+ * This is for the case where the task hasn't asked for a specific IO class.
+ * Check for idle and rt task process, and return appropriate IO class.
+ */
+static inline int task_nice_ioclass(struct task_struct *task)
+{
+	if (task->policy == SCHED_IDLE)
+		return IOPRIO_CLASS_IDLE;
+	else if (task->policy == SCHED_FIFO || task->policy == SCHED_RR)
+		return IOPRIO_CLASS_RT;
+	else
+		return IOPRIO_CLASS_BE;
+}
+
+/*
  * For inheritance, return the highest of the two given priorities
  */
 extern int ioprio_best(unsigned short aprio, unsigned short bprio);