Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 627 deletions

diff --git a/ANDROID_3.4.5/drivers/md/md.h b/ANDROID_3.4.5/drivers/md/md.h
deleted file mode 100644
index 1c2063cc..00000000
--- a/ANDROID_3.4.5/drivers/md/md.h
+++ /dev/null
@@ -1,627 +0,0 @@
-/*
-   md.h : kernel internal structure of the Linux MD driver
-          Copyright (C) 1996-98 Ingo Molnar, Gadi Oxman
-	  
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
-   
-   You should have received a copy of the GNU General Public License
-   (for example /usr/src/linux/COPYING); if not, write to the Free
-   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  
-*/
-
-#ifndef _MD_MD_H
-#define _MD_MD_H
-
-#include <linux/blkdev.h>
-#include <linux/kobject.h>
-#include <linux/list.h>
-#include <linux/mm.h>
-#include <linux/mutex.h>
-#include <linux/timer.h>
-#include <linux/wait.h>
-#include <linux/workqueue.h>
-
-#define MaxSector (~(sector_t)0)
-
-/* Bad block numbers are stored sorted in a single page.
- * 64bits is used for each block or extent.
- * 54 bits are sector number, 9 bits are extent size,
- * 1 bit is an 'acknowledged' flag.
- */
-#define MD_MAX_BADBLOCKS	(PAGE_SIZE/8)
-
-/*
- * MD's 'extended' device
- */
-struct md_rdev {
-	struct list_head same_set;	/* RAID devices within the same set */
-
-	sector_t sectors;		/* Device size (in 512bytes sectors) */
-	struct mddev *mddev;		/* RAID array if running */
-	int last_events;		/* IO event timestamp */
-
-	/*
-	 * If meta_bdev is non-NULL, it means that a separate device is
-	 * being used to store the metadata (superblock/bitmap) which
-	 * would otherwise be contained on the same device as the data (bdev).
-	 */
-	struct block_device *meta_bdev;
-	struct block_device *bdev;	/* block device handle */
-
-	struct page	*sb_page, *bb_page;
-	int		sb_loaded;
-	__u64		sb_events;
-	sector_t	data_offset;	/* start of data in array */
-	sector_t 	sb_start;	/* offset of the super block (in 512byte sectors) */
-	int		sb_size;	/* bytes in the superblock */
-	int		preferred_minor;	/* autorun support */
-
-	struct kobject	kobj;
-
-	/* A device can be in one of three states based on two flags:
-	 * Not working:   faulty==1 in_sync==0
-	 * Fully working: faulty==0 in_sync==1
-	 * Working, but not
-	 * in sync with array
-	 *                faulty==0 in_sync==0
-	 *
-	 * It can never have faulty==1, in_sync==1
-	 * This reduces the burden of testing multiple flags in many cases
-	 */
-
-	unsigned long	flags;	/* bit set of 'enum flag_bits' bits. */
-	wait_queue_head_t blocked_wait;
-
-	int desc_nr;			/* descriptor index in the superblock */
-	int raid_disk;			/* role of device in array */
-	int new_raid_disk;		/* role that the device will have in
-					 * the array after a level-change completes.
-					 */
-	int saved_raid_disk;		/* role that device used to have in the
-					 * array and could again if we did a partial
-					 * resync from the bitmap
-					 */
-	sector_t	recovery_offset;/* If this device has been partially
-					 * recovered, this is where we were
-					 * up to.
-					 */
-
-	atomic_t	nr_pending;	/* number of pending requests.
-					 * only maintained for arrays that
-					 * support hot removal
-					 */
-	atomic_t	read_errors;	/* number of consecutive read errors that
-					 * we have tried to ignore.
-					 */
-	struct timespec last_read_error;	/* monotonic time since our
-						 * last read error
-						 */
-	atomic_t	corrected_errors; /* number of corrected read errors,
-					   * for reporting to userspace and storing
-					   * in superblock.
-					   */
-	struct work_struct del_work;	/* used for delayed sysfs removal */
-
-	struct sysfs_dirent *sysfs_state; /* handle for 'state'
-					   * sysfs entry */
-
-	struct badblocks {
-		int	count;		/* count of bad blocks */
-		int	unacked_exist;	/* there probably are unacknowledged
-					 * bad blocks.  This is only cleared
-					 * when a read discovers none
-					 */
-		int	shift;		/* shift from sectors to block size
-					 * a -ve shift means badblocks are
-					 * disabled.*/
-		u64	*page;		/* badblock list */
-		int	changed;
-		seqlock_t lock;
-
-		sector_t sector;
-		sector_t size;		/* in sectors */
-	} badblocks;
-};
-enum flag_bits {
-	Faulty,			/* device is known to have a fault */
-	In_sync,		/* device is in_sync with rest of array */
-	Unmerged,		/* device is being added to array and should
-				 * be considerred for bvec_merge_fn but not
-				 * yet for actual IO
-				 */
-	WriteMostly,		/* Avoid reading if at all possible */
-	AutoDetected,		/* added by auto-detect */
-	Blocked,		/* An error occurred but has not yet
-				 * been acknowledged by the metadata
-				 * handler, so don't allow writes
-				 * until it is cleared */
-	WriteErrorSeen,		/* A write error has been seen on this
-				 * device
-				 */
-	FaultRecorded,		/* Intermediate state for clearing
-				 * Blocked.  The Fault is/will-be
-				 * recorded in the metadata, but that
-				 * metadata hasn't been stored safely
-				 * on disk yet.
-				 */
-	BlockedBadBlocks,	/* A writer is blocked because they
-				 * found an unacknowledged bad-block.
-				 * This can safely be cleared at any
-				 * time, and the writer will re-check.
-				 * It may be set at any time, and at
-				 * worst the writer will timeout and
-				 * re-check.  So setting it as
-				 * accurately as possible is good, but
-				 * not absolutely critical.
-				 */
-	WantReplacement,	/* This device is a candidate to be
-				 * hot-replaced, either because it has
-				 * reported some faults, or because
-				 * of explicit request.
-				 */
-	Replacement,		/* This device is a replacement for
-				 * a want_replacement device with same
-				 * raid_disk number.
-				 */
-};
-
-#define BB_LEN_MASK	(0x00000000000001FFULL)
-#define BB_OFFSET_MASK	(0x7FFFFFFFFFFFFE00ULL)
-#define BB_ACK_MASK	(0x8000000000000000ULL)
-#define BB_MAX_LEN	512
-#define BB_OFFSET(x)	(((x) & BB_OFFSET_MASK) >> 9)
-#define BB_LEN(x)	(((x) & BB_LEN_MASK) + 1)
-#define BB_ACK(x)	(!!((x) & BB_ACK_MASK))
-#define BB_MAKE(a, l, ack) (((a)<<9) | ((l)-1) | ((u64)(!!(ack)) << 63))
-
-extern int md_is_badblock(struct badblocks *bb, sector_t s, int sectors,
-			  sector_t *first_bad, int *bad_sectors);
-static inline int is_badblock(struct md_rdev *rdev, sector_t s, int sectors,
-			      sector_t *first_bad, int *bad_sectors)
-{
-	if (unlikely(rdev->badblocks.count)) {
-		int rv = md_is_badblock(&rdev->badblocks, rdev->data_offset + s,
-					sectors,
-					first_bad, bad_sectors);
-		if (rv)
-			*first_bad -= rdev->data_offset;
-		return rv;
-	}
-	return 0;
-}
-extern int rdev_set_badblocks(struct md_rdev *rdev, sector_t s, int sectors,
-			      int acknowledged);
-extern int rdev_clear_badblocks(struct md_rdev *rdev, sector_t s, int sectors);
-extern void md_ack_all_badblocks(struct badblocks *bb);
-
-struct mddev {
-	void				*private;
-	struct md_personality		*pers;
-	dev_t				unit;
-	int				md_minor;
-	struct list_head 		disks;
-	unsigned long			flags;
-#define MD_CHANGE_DEVS	0	/* Some device status has changed */
-#define MD_CHANGE_CLEAN 1	/* transition to or from 'clean' */
-#define MD_CHANGE_PENDING 2	/* switch from 'clean' to 'active' in progress */
-#define MD_ARRAY_FIRST_USE 3    /* First use of array, needs initialization */
-
-	int				suspended;
-	atomic_t			active_io;
-	int				ro;
-	int				sysfs_active; /* set when sysfs deletes
-						       * are happening, so run/
-						       * takeover/stop are not safe
-						       */
-	int				ready; /* See when safe to pass 
-						* IO requests down */
-	struct gendisk			*gendisk;
-
-	struct kobject			kobj;
-	int				hold_active;
-#define	UNTIL_IOCTL	1
-#define	UNTIL_STOP	2
-
-	/* Superblock information */
-	int				major_version,
-					minor_version,
-					patch_version;
-	int				persistent;
-	int 				external;	/* metadata is
-							 * managed externally */
-	char				metadata_type[17]; /* externally set*/
-	int				chunk_sectors;
-	time_t				ctime, utime;
-	int				level, layout;
-	char				clevel[16];
-	int				raid_disks;
-	int				max_disks;
-	sector_t			dev_sectors; 	/* used size of
-							 * component devices */
-	sector_t			array_sectors; /* exported array size */
-	int				external_size; /* size managed
-							* externally */
-	__u64				events;
-	/* If the last 'event' was simply a clean->dirty transition, and
-	 * we didn't write it to the spares, then it is safe and simple
-	 * to just decrement the event count on a dirty->clean transition.
-	 * So we record that possibility here.
-	 */
-	int				can_decrease_events;
-
-	char				uuid[16];
-
-	/* If the array is being reshaped, we need to record the
-	 * new shape and an indication of where we are up to.
-	 * This is written to the superblock.
-	 * If reshape_position is MaxSector, then no reshape is happening (yet).
-	 */
-	sector_t			reshape_position;
-	int				delta_disks, new_level, new_layout;
-	int				new_chunk_sectors;
-
-	atomic_t			plug_cnt;	/* If device is expecting
-							 * more bios soon.
-							 */
-	struct md_thread		*thread;	/* management thread */
-	struct md_thread		*sync_thread;	/* doing resync or reconstruct */
-	sector_t			curr_resync;	/* last block scheduled */
-	/* As resync requests can complete out of order, we cannot easily track
-	 * how much resync has been completed.  So we occasionally pause until
-	 * everything completes, then set curr_resync_completed to curr_resync.
-	 * As such it may be well behind the real resync mark, but it is a value
-	 * we are certain of.
-	 */
-	sector_t			curr_resync_completed;
-	unsigned long			resync_mark;	/* a recent timestamp */
-	sector_t			resync_mark_cnt;/* blocks written at resync_mark */
-	sector_t			curr_mark_cnt; /* blocks scheduled now */
-
-	sector_t			resync_max_sectors; /* may be set by personality */
-
-	sector_t			resync_mismatches; /* count of sectors where
-							    * parity/replica mismatch found
-							    */
-
-	/* allow user-space to request suspension of IO to regions of the array */
-	sector_t			suspend_lo;
-	sector_t			suspend_hi;
-	/* if zero, use the system-wide default */
-	int				sync_speed_min;
-	int				sync_speed_max;
-
-	/* resync even though the same disks are shared among md-devices */
-	int				parallel_resync;
-
-	int				ok_start_degraded;
-	/* recovery/resync flags 
-	 * NEEDED:   we might need to start a resync/recover
-	 * RUNNING:  a thread is running, or about to be started
-	 * SYNC:     actually doing a resync, not a recovery
-	 * RECOVER:  doing recovery, or need to try it.
-	 * INTR:     resync needs to be aborted for some reason
-	 * DONE:     thread is done and is waiting to be reaped
-	 * REQUEST:  user-space has requested a sync (used with SYNC)
-	 * CHECK:    user-space request for check-only, no repair
-	 * RESHAPE:  A reshape is happening
-	 *
-	 * If neither SYNC or RESHAPE are set, then it is a recovery.
-	 */
-#define	MD_RECOVERY_RUNNING	0
-#define	MD_RECOVERY_SYNC	1
-#define	MD_RECOVERY_RECOVER	2
-#define	MD_RECOVERY_INTR	3
-#define	MD_RECOVERY_DONE	4
-#define	MD_RECOVERY_NEEDED	5
-#define	MD_RECOVERY_REQUESTED	6
-#define	MD_RECOVERY_CHECK	7
-#define MD_RECOVERY_RESHAPE	8
-#define	MD_RECOVERY_FROZEN	9
-
-	unsigned long			recovery;
-	/* If a RAID personality determines that recovery (of a particular
-	 * device) will fail due to a read error on the source device, it
-	 * takes a copy of this number and does not attempt recovery again
-	 * until this number changes.
-	 */
-	int				recovery_disabled;
-
-	int				in_sync;	/* know to not need resync */
-	/* 'open_mutex' avoids races between 'md_open' and 'do_md_stop', so
-	 * that we are never stopping an array while it is open.
-	 * 'reconfig_mutex' protects all other reconfiguration.
-	 * These locks are separate due to conflicting interactions
-	 * with bdev->bd_mutex.
-	 * Lock ordering is:
-	 *  reconfig_mutex -> bd_mutex : e.g. do_md_run -> revalidate_disk
-	 *  bd_mutex -> open_mutex:  e.g. __blkdev_get -> md_open
-	 */
-	struct mutex			open_mutex;
-	struct mutex			reconfig_mutex;
-	atomic_t			active;		/* general refcount */
-	atomic_t			openers;	/* number of active opens */
-
-	int				changed;	/* True if we might need to
-							 * reread partition info */
-	int				degraded;	/* whether md should consider
-							 * adding a spare
-							 */
-	int				merge_check_needed; /* at least one
-							     * member device
-							     * has a
-							     * merge_bvec_fn */
-
-	atomic_t			recovery_active; /* blocks scheduled, but not written */
-	wait_queue_head_t		recovery_wait;
-	sector_t			recovery_cp;
-	sector_t			resync_min;	/* user requested sync
-							 * starts here */
-	sector_t			resync_max;	/* resync should pause
-							 * when it gets here */
-
-	struct sysfs_dirent		*sysfs_state;	/* handle for 'array_state'
-							 * file in sysfs.
-							 */
-	struct sysfs_dirent		*sysfs_action;  /* handle for 'sync_action' */
-
-	struct work_struct del_work;	/* used for delayed sysfs removal */
-
-	spinlock_t			write_lock;
-	wait_queue_head_t		sb_wait;	/* for waiting on superblock updates */
-	atomic_t			pending_writes;	/* number of active superblock writes */
-
-	unsigned int			safemode;	/* if set, update "clean" superblock
-							 * when no writes pending.
-							 */ 
-	unsigned int			safemode_delay;
-	struct timer_list		safemode_timer;
-	atomic_t			writes_pending; 
-	struct request_queue		*queue;	/* for plugging ... */
-
-	struct bitmap                   *bitmap; /* the bitmap for the device */
-	struct {
-		struct file		*file; /* the bitmap file */
-		loff_t			offset; /* offset from superblock of
-						 * start of bitmap. May be
-						 * negative, but not '0'
-						 * For external metadata, offset
-						 * from start of device. 
-						 */
-		loff_t			default_offset; /* this is the offset to use when
-							 * hot-adding a bitmap.  It should
-							 * eventually be settable by sysfs.
-							 */
-		struct mutex		mutex;
-		unsigned long		chunksize;
-		unsigned long		daemon_sleep; /* how many jiffies between updates? */
-		unsigned long		max_write_behind; /* write-behind mode */
-		int			external;
-	} bitmap_info;
-
-	atomic_t 			max_corr_read_errors; /* max read retries */
-	struct list_head		all_mddevs;
-
-	struct attribute_group		*to_remove;
-
-	struct bio_set			*bio_set;
-
-	/* Generic flush handling.
-	 * The last to finish preflush schedules a worker to submit
-	 * the rest of the request (without the REQ_FLUSH flag).
-	 */
-	struct bio *flush_bio;
-	atomic_t flush_pending;
-	struct work_struct flush_work;
-	struct work_struct event_work;	/* used by dm to report failure event */
-	void (*sync_super)(struct mddev *mddev, struct md_rdev *rdev);
-};
-
-
-static inline void rdev_dec_pending(struct md_rdev *rdev, struct mddev *mddev)
-{
-	int faulty = test_bit(Faulty, &rdev->flags);
-	if (atomic_dec_and_test(&rdev->nr_pending) && faulty)
-		set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
-}
-
-static inline void md_sync_acct(struct block_device *bdev, unsigned long nr_sectors)
-{
-        atomic_add(nr_sectors, &bdev->bd_contains->bd_disk->sync_io);
-}
-
-struct md_personality
-{
-	char *name;
-	int level;
-	struct list_head list;
-	struct module *owner;
-	void (*make_request)(struct mddev *mddev, struct bio *bio);
-	int (*run)(struct mddev *mddev);
-	int (*stop)(struct mddev *mddev);
-	void (*status)(struct seq_file *seq, struct mddev *mddev);
-	/* error_handler must set ->faulty and clear ->in_sync
-	 * if appropriate, and should abort recovery if needed 
-	 */
-	void (*error_handler)(struct mddev *mddev, struct md_rdev *rdev);
-	int (*hot_add_disk) (struct mddev *mddev, struct md_rdev *rdev);
-	int (*hot_remove_disk) (struct mddev *mddev, struct md_rdev *rdev);
-	int (*spare_active) (struct mddev *mddev);
-	sector_t (*sync_request)(struct mddev *mddev, sector_t sector_nr, int *skipped, int go_faster);
-	int (*resize) (struct mddev *mddev, sector_t sectors);
-	sector_t (*size) (struct mddev *mddev, sector_t sectors, int raid_disks);
-	int (*check_reshape) (struct mddev *mddev);
-	int (*start_reshape) (struct mddev *mddev);
-	void (*finish_reshape) (struct mddev *mddev);
-	/* quiesce moves between quiescence states
-	 * 0 - fully active
-	 * 1 - no new requests allowed
-	 * others - reserved
-	 */
-	void (*quiesce) (struct mddev *mddev, int state);
-	/* takeover is used to transition an array from one
-	 * personality to another.  The new personality must be able
-	 * to handle the data in the current layout.
-	 * e.g. 2drive raid1 -> 2drive raid5
-	 *      ndrive raid5 -> degraded n+1drive raid6 with special layout
-	 * If the takeover succeeds, a new 'private' structure is returned.
-	 * This needs to be installed and then ->run used to activate the
-	 * array.
-	 */
-	void *(*takeover) (struct mddev *mddev);
-};
-
-
-struct md_sysfs_entry {
-	struct attribute attr;
-	ssize_t (*show)(struct mddev *, char *);
-	ssize_t (*store)(struct mddev *, const char *, size_t);
-};
-extern struct attribute_group md_bitmap_group;
-
-static inline struct sysfs_dirent *sysfs_get_dirent_safe(struct sysfs_dirent *sd, char *name)
-{
-	if (sd)
-		return sysfs_get_dirent(sd, NULL, name);
-	return sd;
-}
-static inline void sysfs_notify_dirent_safe(struct sysfs_dirent *sd)
-{
-	if (sd)
-		sysfs_notify_dirent(sd);
-}
-
-static inline char * mdname (struct mddev * mddev)
-{
-	return mddev->gendisk ? mddev->gendisk->disk_name : "mdX";
-}
-
-static inline int sysfs_link_rdev(struct mddev *mddev, struct md_rdev *rdev)
-{
-	char nm[20];
-	if (!test_bit(Replacement, &rdev->flags)) {
-		sprintf(nm, "rd%d", rdev->raid_disk);
-		return sysfs_create_link(&mddev->kobj, &rdev->kobj, nm);
-	} else
-		return 0;
-}
-
-static inline void sysfs_unlink_rdev(struct mddev *mddev, struct md_rdev *rdev)
-{
-	char nm[20];
-	if (!test_bit(Replacement, &rdev->flags)) {
-		sprintf(nm, "rd%d", rdev->raid_disk);
-		sysfs_remove_link(&mddev->kobj, nm);
-	}
-}
-
-/*
- * iterates through some rdev ringlist. It's safe to remove the
- * current 'rdev'. Dont touch 'tmp' though.
- */
-#define rdev_for_each_list(rdev, tmp, head)				\
-	list_for_each_entry_safe(rdev, tmp, head, same_set)
-
-/*
- * iterates through the 'same array disks' ringlist
- */
-#define rdev_for_each(rdev, mddev)				\
-	list_for_each_entry(rdev, &((mddev)->disks), same_set)
-
-#define rdev_for_each_safe(rdev, tmp, mddev)				\
-	list_for_each_entry_safe(rdev, tmp, &((mddev)->disks), same_set)
-
-#define rdev_for_each_rcu(rdev, mddev)				\
-	list_for_each_entry_rcu(rdev, &((mddev)->disks), same_set)
-
-struct md_thread {
-	void			(*run) (struct mddev *mddev);
-	struct mddev		*mddev;
-	wait_queue_head_t	wqueue;
-	unsigned long           flags;
-	struct task_struct	*tsk;
-	unsigned long		timeout;
-};
-
-#define THREAD_WAKEUP  0
-
-#define __wait_event_lock_irq(wq, condition, lock, cmd) 		\
-do {									\
-	wait_queue_t __wait;						\
-	init_waitqueue_entry(&__wait, current);				\
-									\
-	add_wait_queue(&wq, &__wait);					\
-	for (;;) {							\
-		set_current_state(TASK_UNINTERRUPTIBLE);		\
-		if (condition)						\
-			break;						\
-		spin_unlock_irq(&lock);					\
-		cmd;							\
-		schedule();						\
-		spin_lock_irq(&lock);					\
-	}								\
-	current->state = TASK_RUNNING;					\
-	remove_wait_queue(&wq, &__wait);				\
-} while (0)
-
-#define wait_event_lock_irq(wq, condition, lock, cmd) 			\
-do {									\
-	if (condition)	 						\
-		break;							\
-	__wait_event_lock_irq(wq, condition, lock, cmd);		\
-} while (0)
-
-static inline void safe_put_page(struct page *p)
-{
-	if (p) put_page(p);
-}
-
-extern int register_md_personality(struct md_personality *p);
-extern int unregister_md_personality(struct md_personality *p);
-extern struct md_thread *md_register_thread(
-	void (*run)(struct mddev *mddev),
-	struct mddev *mddev,
-	const char *name);
-extern void md_unregister_thread(struct md_thread **threadp);
-extern void md_wakeup_thread(struct md_thread *thread);
-extern void md_check_recovery(struct mddev *mddev);
-extern void md_write_start(struct mddev *mddev, struct bio *bi);
-extern void md_write_end(struct mddev *mddev);
-extern void md_done_sync(struct mddev *mddev, int blocks, int ok);
-extern void md_error(struct mddev *mddev, struct md_rdev *rdev);
-
-extern int mddev_congested(struct mddev *mddev, int bits);
-extern void md_flush_request(struct mddev *mddev, struct bio *bio);
-extern void md_super_write(struct mddev *mddev, struct md_rdev *rdev,
-			   sector_t sector, int size, struct page *page);
-extern void md_super_wait(struct mddev *mddev);
-extern int sync_page_io(struct md_rdev *rdev, sector_t sector, int size, 
-			struct page *page, int rw, bool metadata_op);
-extern void md_do_sync(struct mddev *mddev);
-extern void md_new_event(struct mddev *mddev);
-extern int md_allow_write(struct mddev *mddev);
-extern void md_wait_for_blocked_rdev(struct md_rdev *rdev, struct mddev *mddev);
-extern void md_set_array_sectors(struct mddev *mddev, sector_t array_sectors);
-extern int md_check_no_bitmap(struct mddev *mddev);
-extern int md_integrity_register(struct mddev *mddev);
-extern void md_integrity_add_rdev(struct md_rdev *rdev, struct mddev *mddev);
-extern int strict_strtoul_scaled(const char *cp, unsigned long *res, int scale);
-extern void restore_bitmap_write_access(struct file *file);
-
-extern void mddev_init(struct mddev *mddev);
-extern int md_run(struct mddev *mddev);
-extern void md_stop(struct mddev *mddev);
-extern void md_stop_writes(struct mddev *mddev);
-extern int md_rdev_init(struct md_rdev *rdev);
-
-extern void mddev_suspend(struct mddev *mddev);
-extern void mddev_resume(struct mddev *mddev);
-extern struct bio *bio_clone_mddev(struct bio *bio, gfp_t gfp_mask,
-				   struct mddev *mddev);
-extern struct bio *bio_alloc_mddev(gfp_t gfp_mask, int nr_iovecs,
-				   struct mddev *mddev);
-extern int mddev_check_plugged(struct mddev *mddev);
-extern void md_trim_bio(struct bio *bio, int offset, int size);
-#endif /* _MD_MD_H */