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Merge branch 'for-3.1/core' of git://git.kernel.dk/linux-block

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* 'for-3.1/core' of git://git.kernel.dk/linux-block: (24 commits)
  block: strict rq_affinity
  backing-dev: use synchronize_rcu_expedited instead of synchronize_rcu
  block: fix patch import error in max_discard_sectors check
  block: reorder request_queue to remove 64 bit alignment padding
  CFQ: add think time check for group
  CFQ: add think time check for service tree
  CFQ: move think time check variables to a separate struct
  fixlet: Remove fs_excl from struct task.
  cfq: Remove special treatment for metadata rqs.
  block: document blk_plug list access
  block: avoid building too big plug list
  compat_ioctl: fix make headers_check regression
  block: eliminate potential for infinite loop in blkdev_issue_discard
  compat_ioctl: fix warning caused by qemu
  block: flush MEDIA_CHANGE from drivers on close(2)
  blk-throttle: Make total_nr_queued unsigned
  block: Add __attribute__((format(printf...) and fix fallout
  fs/partitions/check.c: make local symbols static
  block:remove some spare spaces in genhd.c
  block:fix the comment error in blkdev.h
  ...
This commit is contained in:
Linus Torvalds 2011-07-25 10:33:36 -07:00
commit 096a705bbc
28 changed files with 230 additions and 209 deletions
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29
include/linux/blkdev.h
View file

@ -73,7 +73,7 @@ enum rq_cmd_type_bits {
/*
* try to put the fields that are referenced together in the same cacheline.
* if you modify this structure, be sure to check block/blk-core.c:rq_init()
* if you modify this structure, be sure to check block/blk-core.c:blk_rq_init()
* as well!
*/
struct request {
@ -260,8 +260,7 @@ struct queue_limits {
unsigned char discard_zeroes_data;
};
struct request_queue
{
struct request_queue {
/*
* Together with queue_head for cacheline sharing
*/
@ -303,16 +302,16 @@ struct request_queue
*/
void *queuedata;
/*
* queue needs bounce pages for pages above this limit
*/
gfp_t bounce_gfp;
/*
* various queue flags, see QUEUE_* below
*/
unsigned long queue_flags;
/*
* queue needs bounce pages for pages above this limit
*/
gfp_t bounce_gfp;
/*
* protects queue structures from reentrancy. ->__queue_lock should
* _never_ be used directly, it is queue private. always use
@ -334,8 +333,8 @@ struct request_queue
unsigned int nr_congestion_off;
unsigned int nr_batching;
void *dma_drain_buffer;
unsigned int dma_drain_size;
void *dma_drain_buffer;
unsigned int dma_pad_mask;
unsigned int dma_alignment;
@ -393,7 +392,7 @@ struct request_queue
#define QUEUE_FLAG_ELVSWITCH 6 /* don't use elevator, just do FIFO */
#define QUEUE_FLAG_BIDI 7 /* queue supports bidi requests */
#define QUEUE_FLAG_NOMERGES 8 /* disable merge attempts */
#define QUEUE_FLAG_SAME_COMP 9 /* force complete on same CPU */
#define QUEUE_FLAG_SAME_COMP 9 /* complete on same CPU-group */
#define QUEUE_FLAG_FAIL_IO 10 /* fake timeout */
#define QUEUE_FLAG_STACKABLE 11 /* supports request stacking */
#define QUEUE_FLAG_NONROT 12 /* non-rotational device (SSD) */
@ -403,6 +402,7 @@ struct request_queue
#define QUEUE_FLAG_NOXMERGES 15 /* No extended merges */
#define QUEUE_FLAG_ADD_RANDOM 16 /* Contributes to random pool */
#define QUEUE_FLAG_SECDISCARD 17 /* supports SECDISCARD */
#define QUEUE_FLAG_SAME_FORCE 18 /* force complete on same CPU */
#define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
(1 << QUEUE_FLAG_STACKABLE) | \
@ -857,12 +857,21 @@ struct request_queue *blk_alloc_queue(gfp_t);
struct request_queue *blk_alloc_queue_node(gfp_t, int);
extern void blk_put_queue(struct request_queue *);
/*
* Note: Code in between changing the blk_plug list/cb_list or element of such
* lists is preemptable, but such code can't do sleep (or be very careful),
* otherwise data is corrupted. For details, please check schedule() where
* blk_schedule_flush_plug() is called.
*/
struct blk_plug {
unsigned long magic;
struct list_head list;
struct list_head cb_list;
unsigned int should_sort;
unsigned int count;
};
#define BLK_MAX_REQUEST_COUNT 16
struct blk_plug_cb {
struct list_head list;
void (*callback)(struct blk_plug_cb *);

2
include/linux/elevator.h
View file

@ -146,7 +146,7 @@ extern struct request *elv_rb_latter_request(struct request_queue *, struct requ
/*
* rb support functions.
*/
extern struct request *elv_rb_add(struct rb_root *, struct request *);
extern void elv_rb_add(struct rb_root *, struct request *);
extern void elv_rb_del(struct rb_root *, struct request *);
extern struct request *elv_rb_find(struct rb_root *, sector_t);

22
include/linux/fd.h
View file

@ -377,4 +377,26 @@ struct floppy_raw_cmd {
#define FDEJECT _IO(2, 0x5a)
/* eject the disk */
#ifdef __KERNEL__
#ifdef CONFIG_COMPAT
#include <linux/compat.h>
struct compat_floppy_struct {
compat_uint_t size;
compat_uint_t sect;
compat_uint_t head;
compat_uint_t track;
compat_uint_t stretch;
unsigned char gap;
unsigned char rate;
unsigned char spec1;
unsigned char fmt_gap;
const compat_caddr_t name;
};
#define FDGETPRM32 _IOR(2, 0x04, struct compat_floppy_struct)
#endif
#endif
#endif

4
include/linux/fs.h
View file

@ -1469,10 +1469,6 @@ enum {
#define vfs_check_frozen(sb, level) \
wait_event((sb)->s_wait_unfrozen, ((sb)->s_frozen < (level)))
#define get_fs_excl() atomic_inc(&current->fs_excl)
#define put_fs_excl() atomic_dec(&current->fs_excl)
#define has_fs_excl() atomic_read(&current->fs_excl)
/*
* until VFS tracks user namespaces for inodes, just make all files
* belong to init_user_ns

2
include/linux/genhd.h
View file

@ -420,7 +420,7 @@ static inline int get_disk_ro(struct gendisk *disk)
extern void disk_block_events(struct gendisk *disk);
extern void disk_unblock_events(struct gendisk *disk);
extern void disk_check_events(struct gendisk *disk);
extern void disk_flush_events(struct gendisk *disk, unsigned int mask);
extern unsigned int disk_clear_events(struct gendisk *disk, unsigned int mask);
/* drivers/char/random.c */

1
include/linux/init_task.h
View file

@ -176,7 +176,6 @@ extern struct cred init_cred;
.alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
.journal_info = NULL, \
.cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
.fs_excl = ATOMIC_INIT(0), \
.pi_lock = __RAW_SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
.timer_slack_ns = 50000, /* 50 usec default slack */ \
.pids = { \

14
include/linux/iocontext.h
View file

@ -5,6 +5,14 @@
#include <linux/rcupdate.h>
struct cfq_queue;
struct cfq_ttime {
unsigned long last_end_request;
unsigned long ttime_total;
unsigned long ttime_samples;
unsigned long ttime_mean;
};
struct cfq_io_context {
void *key;
@ -12,11 +20,7 @@ struct cfq_io_context {
struct io_context *ioc;
unsigned long last_end_request;
unsigned long ttime_total;
unsigned long ttime_samples;
unsigned long ttime_mean;
struct cfq_ttime ttime;
struct list_head queue_list;
struct hlist_node cic_list;

1
include/linux/sched.h
View file

@ -1512,7 +1512,6 @@ struct task_struct {
short il_next;
short pref_node_fork;
#endif
atomic_t fs_excl; /* holding fs exclusive resources */
struct rcu_head rcu;
/*