Merge ../linus

8 files changed, 61 insertions, 51 deletions

diff --git a/include/linux/raid/bitmap.h b/include/linux/raid/bitmap.h
index 63df898fe2e9..ebd42a3710b4 100644
--- a/include/linux/raid/bitmap.h
+++ b/include/linux/raid/bitmap.h
@@ -146,16 +146,16 @@ enum bitmap_state {
 
 /* the superblock at the front of the bitmap file -- little endian */
 typedef struct bitmap_super_s {
-	__u32 magic;        /*  0  BITMAP_MAGIC */
-	__u32 version;      /*  4  the bitmap major for now, could change... */
-	__u8  uuid[16];     /*  8  128 bit uuid - must match md device uuid */
-	__u64 events;       /* 24  event counter for the bitmap (1)*/
-	__u64 events_cleared;/*32  event counter when last bit cleared (2) */
-	__u64 sync_size;    /* 40  the size of the md device's sync range(3) */
-	__u32 state;        /* 48  bitmap state information */
-	__u32 chunksize;    /* 52  the bitmap chunk size in bytes */
-	__u32 daemon_sleep; /* 56  seconds between disk flushes */
-	__u32 write_behind; /* 60  number of outstanding write-behind writes */
+	__le32 magic;        /*  0  BITMAP_MAGIC */
+	__le32 version;      /*  4  the bitmap major for now, could change... */
+	__u8  uuid[16];      /*  8  128 bit uuid - must match md device uuid */
+	__le64 events;       /* 24  event counter for the bitmap (1)*/
+	__le64 events_cleared;/*32  event counter when last bit cleared (2) */
+	__le64 sync_size;    /* 40  the size of the md device's sync range(3) */
+	__le32 state;        /* 48  bitmap state information */
+	__le32 chunksize;    /* 52  the bitmap chunk size in bytes */
+	__le32 daemon_sleep; /* 56  seconds between disk flushes */
+	__le32 write_behind; /* 60  number of outstanding write-behind writes */
 
 	__u8  pad[256 - 64]; /* set to zero */
 } bitmap_super_t;
@@ -265,6 +265,8 @@ int bitmap_update_sb(struct bitmap *bitmap);
 int  bitmap_setallbits(struct bitmap *bitmap);
 void bitmap_write_all(struct bitmap *bitmap);
 
+void bitmap_dirty_bits(struct bitmap *bitmap, unsigned long s, unsigned long e);
+
 /* these are exported */
 int bitmap_startwrite(struct bitmap *bitmap, sector_t offset,
 			unsigned long sectors, int behind);
diff --git a/include/linux/raid/md.h b/include/linux/raid/md.h
index eb3e547c8fee..866a1e2b0ce0 100644
--- a/include/linux/raid/md.h
+++ b/include/linux/raid/md.h
@@ -53,6 +53,8 @@
 #include <linux/raid/md_u.h>
 #include <linux/raid/md_k.h>
 
+#ifdef CONFIG_MD
+
 /*
  * Different major versions are not compatible.
  * Different minor versions are only downward compatible.
@@ -93,7 +95,7 @@ extern int sync_page_io(struct block_device *bdev, sector_t sector, int size,
 extern void md_do_sync(mddev_t *mddev);
 extern void md_new_event(mddev_t *mddev);
 
-extern void md_update_sb(mddev_t * mddev);
 
+#endif /* CONFIG_MD */
 #endif 
 
diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h
index d28890295852..8245c282168b 100644
--- a/include/linux/raid/md_k.h
+++ b/include/linux/raid/md_k.h
@@ -18,6 +18,8 @@
 /* and dm-bio-list.h is not under include/linux because.... ??? */
 #include "../../../drivers/md/dm-bio-list.h"
 
+#ifdef CONFIG_BLOCK
+
 #define	LEVEL_MULTIPATH		(-4)
 #define	LEVEL_LINEAR		(-1)
 #define	LEVEL_FAULTY		(-5)
@@ -29,18 +31,15 @@
 #define	LEVEL_NONE		(-1000000)
 
 #define MaxSector (~(sector_t)0)
-#define MD_THREAD_NAME_MAX 14
 
 typedef struct mddev_s mddev_t;
 typedef struct mdk_rdev_s mdk_rdev_t;
 
-#define MAX_MD_DEVS  256	/* Max number of md dev */
-
 /*
  * options passed in raidrun:
  */
 
-/* Currently this must fix in an 'int' */
+/* Currently this must fit in an 'int' */
 #define MAX_CHUNK_SIZE (1<<30)
 
 /*
@@ -114,7 +113,11 @@ struct mddev_s
 	dev_t				unit;
 	int				md_minor;
 	struct list_head 		disks;
-	int				sb_dirty;
+	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	/* superblock update in progress */
+
 	int				ro;
 
 	struct gendisk			*gendisk;
@@ -362,5 +365,6 @@ static inline void safe_put_page(struct page *p)
 	if (p) put_page(p);
 }
 
+#endif /* CONFIG_BLOCK */
 #endif
 
diff --git a/include/linux/raid/md_p.h b/include/linux/raid/md_p.h
index b6ebc69bae54..3f2cd98c508b 100644
--- a/include/linux/raid/md_p.h
+++ b/include/linux/raid/md_p.h
@@ -206,52 +206,52 @@ static inline __u64 md_event(mdp_super_t *sb) {
  */
 struct mdp_superblock_1 {
 	/* constant array information - 128 bytes */
-	__u32	magic;		/* MD_SB_MAGIC: 0xa92b4efc - little endian */
-	__u32	major_version;	/* 1 */
-	__u32	feature_map;	/* bit 0 set if 'bitmap_offset' is meaningful */
-	__u32	pad0;		/* always set to 0 when writing */
+	__le32	magic;		/* MD_SB_MAGIC: 0xa92b4efc - little endian */
+	__le32	major_version;	/* 1 */
+	__le32	feature_map;	/* bit 0 set if 'bitmap_offset' is meaningful */
+	__le32	pad0;		/* always set to 0 when writing */
 
 	__u8	set_uuid[16];	/* user-space generated. */
 	char	set_name[32];	/* set and interpreted by user-space */
 
-	__u64	ctime;		/* lo 40 bits are seconds, top 24 are microseconds or 0*/
-	__u32	level;		/* -4 (multipath), -1 (linear), 0,1,4,5 */
-	__u32	layout;		/* only for raid5 and raid10 currently */
-	__u64	size;		/* used size of component devices, in 512byte sectors */
+	__le64	ctime;		/* lo 40 bits are seconds, top 24 are microseconds or 0*/
+	__le32	level;		/* -4 (multipath), -1 (linear), 0,1,4,5 */
+	__le32	layout;		/* only for raid5 and raid10 currently */
+	__le64	size;		/* used size of component devices, in 512byte sectors */
 
-	__u32	chunksize;	/* in 512byte sectors */
-	__u32	raid_disks;
-	__u32	bitmap_offset;	/* sectors after start of superblock that bitmap starts
+	__le32	chunksize;	/* in 512byte sectors */
+	__le32	raid_disks;
+	__le32	bitmap_offset;	/* sectors after start of superblock that bitmap starts
 				 * NOTE: signed, so bitmap can be before superblock
 				 * only meaningful of feature_map[0] is set.
 				 */
 
 	/* These are only valid with feature bit '4' */
-	__u32	new_level;	/* new level we are reshaping to		*/
-	__u64	reshape_position;	/* next address in array-space for reshape */
-	__u32	delta_disks;	/* change in number of raid_disks		*/
-	__u32	new_layout;	/* new layout					*/
-	__u32	new_chunk;	/* new chunk size (bytes)			*/
+	__le32	new_level;	/* new level we are reshaping to		*/
+	__le64	reshape_position;	/* next address in array-space for reshape */
+	__le32	delta_disks;	/* change in number of raid_disks		*/
+	__le32	new_layout;	/* new layout					*/
+	__le32	new_chunk;	/* new chunk size (bytes)			*/
 	__u8	pad1[128-124];	/* set to 0 when written */
 
 	/* constant this-device information - 64 bytes */
-	__u64	data_offset;	/* sector start of data, often 0 */
-	__u64	data_size;	/* sectors in this device that can be used for data */
-	__u64	super_offset;	/* sector start of this superblock */
-	__u64	recovery_offset;/* sectors before this offset (from data_offset) have been recovered */
-	__u32	dev_number;	/* permanent identifier of this  device - not role in raid */
-	__u32	cnt_corrected_read; /* number of read errors that were corrected by re-writing */
+	__le64	data_offset;	/* sector start of data, often 0 */
+	__le64	data_size;	/* sectors in this device that can be used for data */
+	__le64	super_offset;	/* sector start of this superblock */
+	__le64	recovery_offset;/* sectors before this offset (from data_offset) have been recovered */
+	__le32	dev_number;	/* permanent identifier of this  device - not role in raid */
+	__le32	cnt_corrected_read; /* number of read errors that were corrected by re-writing */
 	__u8	device_uuid[16]; /* user-space setable, ignored by kernel */
 	__u8	devflags;	/* per-device flags.  Only one defined...*/
 #define	WriteMostly1	1	/* mask for writemostly flag in above */
 	__u8	pad2[64-57];	/* set to 0 when writing */
 
 	/* array state information - 64 bytes */
-	__u64	utime;		/* 40 bits second, 24 btes microseconds */
-	__u64	events;		/* incremented when superblock updated */
-	__u64	resync_offset;	/* data before this offset (from data_offset) known to be in sync */
-	__u32	sb_csum;	/* checksum upto devs[max_dev] */
-	__u32	max_dev;	/* size of devs[] array to consider */
+	__le64	utime;		/* 40 bits second, 24 btes microseconds */
+	__le64	events;		/* incremented when superblock updated */
+	__le64	resync_offset;	/* data before this offset (from data_offset) known to be in sync */
+	__le32	sb_csum;	/* checksum upto devs[max_dev] */
+	__le32	max_dev;	/* size of devs[] array to consider */
 	__u8	pad3[64-32];	/* set to 0 when writing */
 
 	/* device state information. Indexed by dev_number.
@@ -260,7 +260,7 @@ struct mdp_superblock_1 {
 	 * into the 'roles' value.  If a device is spare or faulty, then it doesn't
 	 * have a meaningful role.
 	 */
-	__u16	dev_roles[0];	/* role in array, or 0xffff for a spare, or 0xfffe for faulty */
+	__le16	dev_roles[0];	/* role in array, or 0xffff for a spare, or 0xfffe for faulty */
 };
 
 /* feature_map bits */
diff --git a/include/linux/raid/md_u.h b/include/linux/raid/md_u.h
index 81da20ccec4d..7192035fc4b0 100644
--- a/include/linux/raid/md_u.h
+++ b/include/linux/raid/md_u.h
@@ -41,7 +41,7 @@
 
 /* usage */
 #define RUN_ARRAY		_IOW (MD_MAJOR, 0x30, mdu_param_t)
-#define START_ARRAY		_IO (MD_MAJOR, 0x31)
+/*  0x31 was START_ARRAY  */
 #define STOP_ARRAY		_IO (MD_MAJOR, 0x32)
 #define STOP_ARRAY_RO		_IO (MD_MAJOR, 0x33)
 #define RESTART_ARRAY_RW	_IO (MD_MAJOR, 0x34)
diff --git a/include/linux/raid/raid1.h b/include/linux/raid/raid1.h
index 3009c813d83d..0a9ba7c3302e 100644
--- a/include/linux/raid/raid1.h
+++ b/include/linux/raid/raid1.h
@@ -30,7 +30,6 @@ struct r1_private_data_s {
 	mddev_t			*mddev;
 	mirror_info_t		*mirrors;
 	int			raid_disks;
-	int			working_disks;
 	int			last_used;
 	sector_t		next_seq_sect;
 	spinlock_t		device_lock;
diff --git a/include/linux/raid/raid10.h b/include/linux/raid/raid10.h
index c41e56a7c090..e9091cfeb286 100644
--- a/include/linux/raid/raid10.h
+++ b/include/linux/raid/raid10.h
@@ -16,7 +16,6 @@ struct r10_private_data_s {
 	mddev_t			*mddev;
 	mirror_info_t		*mirrors;
 	int			raid_disks;
-	int			working_disks;
 	spinlock_t		device_lock;
 
 	/* geometry */
diff --git a/include/linux/raid/raid5.h b/include/linux/raid/raid5.h
index 20ed4c997636..d8286db60b96 100644
--- a/include/linux/raid/raid5.h
+++ b/include/linux/raid/raid5.h
@@ -195,8 +195,9 @@ struct stripe_head {
  * it to the count of prereading stripes.
  * When write is initiated, or the stripe refcnt == 0 (just in case) we
  * clear the PREREAD_ACTIVE flag and decrement the count
- * Whenever the delayed queue is empty and the device is not plugged, we
- * move any strips from delayed to handle and clear the DELAYED flag and set PREREAD_ACTIVE.
+ * Whenever the 'handle' queue is empty and the device is not plugged, we
+ * move any strips from delayed to handle and clear the DELAYED flag and set
+ * PREREAD_ACTIVE.
  * In stripe_handle, if we find pre-reading is necessary, we do it if
  * PREREAD_ACTIVE is set, else we set DELAYED which will send it to the delayed queue.
  * HANDLE gets cleared if stripe_handle leave nothing locked.
@@ -213,7 +214,7 @@ struct raid5_private_data {
 	struct disk_info	*spare;
 	int			chunk_size, level, algorithm;
 	int			max_degraded;
-	int			raid_disks, working_disks, failed_disks;
+	int			raid_disks;
 	int			max_nr_stripes;
 
 	/* used during an expand */
@@ -226,7 +227,10 @@ struct raid5_private_data {
 	struct list_head	handle_list; /* stripes needing handling */
 	struct list_head	delayed_list; /* stripes that have plugged requests */
 	struct list_head	bitmap_list; /* stripes delaying awaiting bitmap update */
+	struct bio		*retry_read_aligned; /* currently retrying aligned bios   */
+	struct bio		*retry_read_aligned_list; /* aligned bios retry list  */
 	atomic_t		preread_active_stripes; /* stripes with scheduled io */
+	atomic_t		active_aligned_reads;
 
 	atomic_t		reshape_stripes; /* stripes with pending writes for reshape */
 	/* unfortunately we need two cache names as we temporarily have
@@ -234,7 +238,7 @@ struct raid5_private_data {
 	 */
 	int			active_name;
 	char			cache_name[2][20];
-	kmem_cache_t		*slab_cache; /* for allocating stripes */
+	struct kmem_cache		*slab_cache; /* for allocating stripes */
 
 	int			seq_flush, seq_write;
 	int			quiesce;