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Merge branch 'for-2.6.34' of git://git.kernel.dk/linux-2.6-block

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* 'for-2.6.34' of git://git.kernel.dk/linux-2.6-block: (38 commits)
  block: don't access jiffies when initialising io_context
  cfq: remove 8 bytes of padding from cfq_rb_root on 64 bit builds
  block: fix for "Consolidate phys_segment and hw_segment limits"
  cfq-iosched: quantum check tweak
  blktrace: perform cleanup after setup error
  blkdev: fix merge_bvec_fn return value checks
  cfq-iosched: requests "in flight" vs "in driver" clarification
  cciss: Fix problem with scatter gather elements in the scsi half of the driver
  cciss: eliminate unnecessary pointer use in cciss scsi code
  cciss: do not use void pointer for scsi hba data
  cciss: factor out scatter gather chain block mapping code
  cciss: fix scatter gather chain block dma direction kludge
  cciss: simplify scatter gather code
  cciss: factor out scatter gather chain block allocation and freeing
  cciss: detect bad alignment of scsi commands at build time
  cciss: clarify command list padding calculation
  cfq-iosched: rethink seeky detection for SSDs
  cfq-iosched: rework seeky detection
  block: remove padding from io_context on 64bit builds
  block: Consolidate phys_segment and hw_segment limits
  ...
This commit is contained in:
Linus Torvalds 2010-03-01 09:00:29 -08:00
commit b1bf936840
77 changed files with 702 additions and 901 deletions
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1
include/linux/Kbuild
View file

@ -43,6 +43,7 @@ header-y += blkpg.h
header-y += bpqether.h
header-y += bsg.h
header-y += can.h
header-y += cciss_defs.h
header-y += cdk.h
header-y += chio.h
header-y += coda_psdev.h

65
include/linux/blkdev.h
View file

@ -316,8 +316,7 @@ struct queue_limits {
unsigned int discard_alignment;
unsigned short logical_block_size;
unsigned short max_hw_segments;
unsigned short max_phys_segments;
unsigned short max_segments;
unsigned char misaligned;
unsigned char discard_misaligned;
@ -462,6 +461,7 @@ struct request_queue
#define QUEUE_FLAG_VIRT QUEUE_FLAG_NONROT /* paravirt device */
#define QUEUE_FLAG_IO_STAT 15 /* do IO stats */
#define QUEUE_FLAG_DISCARD 16 /* supports DISCARD */
#define QUEUE_FLAG_NOXMERGES 17 /* No extended merges */
#define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
(1 << QUEUE_FLAG_CLUSTER) | \
@ -587,6 +587,8 @@ enum {
#define blk_queue_tagged(q) test_bit(QUEUE_FLAG_QUEUED, &(q)->queue_flags)
#define blk_queue_stopped(q) test_bit(QUEUE_FLAG_STOPPED, &(q)->queue_flags)
#define blk_queue_nomerges(q) test_bit(QUEUE_FLAG_NOMERGES, &(q)->queue_flags)
#define blk_queue_noxmerges(q) \
test_bit(QUEUE_FLAG_NOXMERGES, &(q)->queue_flags)
#define blk_queue_nonrot(q) test_bit(QUEUE_FLAG_NONROT, &(q)->queue_flags)
#define blk_queue_io_stat(q) test_bit(QUEUE_FLAG_IO_STAT, &(q)->queue_flags)
#define blk_queue_flushing(q) ((q)->ordseq)
@ -918,10 +920,27 @@ extern struct request_queue *blk_init_queue(request_fn_proc *, spinlock_t *);
extern void blk_cleanup_queue(struct request_queue *);
extern void blk_queue_make_request(struct request_queue *, make_request_fn *);
extern void blk_queue_bounce_limit(struct request_queue *, u64);
extern void blk_queue_max_sectors(struct request_queue *, unsigned int);
extern void blk_queue_max_hw_sectors(struct request_queue *, unsigned int);
extern void blk_queue_max_phys_segments(struct request_queue *, unsigned short);
extern void blk_queue_max_hw_segments(struct request_queue *, unsigned short);
/* Temporary compatibility wrapper */
static inline void blk_queue_max_sectors(struct request_queue *q, unsigned int max)
{
blk_queue_max_hw_sectors(q, max);
}
extern void blk_queue_max_segments(struct request_queue *, unsigned short);
static inline void blk_queue_max_phys_segments(struct request_queue *q, unsigned short max)
{
blk_queue_max_segments(q, max);
}
static inline void blk_queue_max_hw_segments(struct request_queue *q, unsigned short max)
{
blk_queue_max_segments(q, max);
}
extern void blk_queue_max_segment_size(struct request_queue *, unsigned int);
extern void blk_queue_max_discard_sectors(struct request_queue *q,
unsigned int max_discard_sectors);
@ -1014,11 +1033,15 @@ extern int blk_verify_command(unsigned char *cmd, fmode_t has_write_perm);
#define MAX_PHYS_SEGMENTS 128
#define MAX_HW_SEGMENTS 128
#define SAFE_MAX_SECTORS 255
#define BLK_DEF_MAX_SECTORS 1024
#define MAX_SEGMENT_SIZE 65536
#define BLK_SEG_BOUNDARY_MASK 0xFFFFFFFFUL
enum blk_default_limits {
BLK_MAX_SEGMENTS = 128,
BLK_SAFE_MAX_SECTORS = 255,
BLK_DEF_MAX_SECTORS = 1024,
BLK_MAX_SEGMENT_SIZE = 65536,
BLK_SEG_BOUNDARY_MASK = 0xFFFFFFFFUL,
};
#define blkdev_entry_to_request(entry) list_entry((entry), struct request, queuelist)
@ -1042,14 +1065,9 @@ static inline unsigned int queue_max_hw_sectors(struct request_queue *q)
return q->limits.max_hw_sectors;
}
static inline unsigned short queue_max_hw_segments(struct request_queue *q)
static inline unsigned short queue_max_segments(struct request_queue *q)
{
return q->limits.max_hw_segments;
}
static inline unsigned short queue_max_phys_segments(struct request_queue *q)
{
return q->limits.max_phys_segments;
return q->limits.max_segments;
}
static inline unsigned int queue_max_segment_size(struct request_queue *q)
@ -1110,18 +1128,13 @@ static inline int queue_alignment_offset(struct request_queue *q)
return q->limits.alignment_offset;
}
static inline int queue_limit_alignment_offset(struct queue_limits *lim, sector_t offset)
static inline int queue_limit_alignment_offset(struct queue_limits *lim, sector_t sector)
{
unsigned int granularity = max(lim->physical_block_size, lim->io_min);
unsigned int alignment = (sector << 9) & (granularity - 1);
offset &= granularity - 1;
return (granularity + lim->alignment_offset - offset) & (granularity - 1);
}
static inline int queue_sector_alignment_offset(struct request_queue *q,
sector_t sector)
{
return queue_limit_alignment_offset(&q->limits, sector << 9);
return (granularity + lim->alignment_offset - alignment)
& (granularity - 1);
}
static inline int bdev_alignment_offset(struct block_device *bdev)
@ -1145,10 +1158,8 @@ static inline int queue_discard_alignment(struct request_queue *q)
return q->limits.discard_alignment;
}
static inline int queue_sector_discard_alignment(struct request_queue *q,
sector_t sector)
static inline int queue_limit_discard_alignment(struct queue_limits *lim, sector_t sector)
{
struct queue_limits *lim = &q->limits;
unsigned int alignment = (sector << 9) & (lim->discard_granularity - 1);
return (lim->discard_granularity + lim->discard_alignment - alignment)

130
include/linux/cciss_defs.h Normal file
View file

@ -0,0 +1,130 @@
#ifndef CCISS_DEFS_H
#define CCISS_DEFS_H
#include <linux/types.h>
/* general boundary definitions */
#define SENSEINFOBYTES 32 /* note that this value may vary
between host implementations */
/* Command Status value */
#define CMD_SUCCESS 0x0000
#define CMD_TARGET_STATUS 0x0001
#define CMD_DATA_UNDERRUN 0x0002
#define CMD_DATA_OVERRUN 0x0003
#define CMD_INVALID 0x0004
#define CMD_PROTOCOL_ERR 0x0005
#define CMD_HARDWARE_ERR 0x0006
#define CMD_CONNECTION_LOST 0x0007
#define CMD_ABORTED 0x0008
#define CMD_ABORT_FAILED 0x0009
#define CMD_UNSOLICITED_ABORT 0x000A
#define CMD_TIMEOUT 0x000B
#define CMD_UNABORTABLE 0x000C
/* transfer direction */
#define XFER_NONE 0x00
#define XFER_WRITE 0x01
#define XFER_READ 0x02
#define XFER_RSVD 0x03
/* task attribute */
#define ATTR_UNTAGGED 0x00
#define ATTR_SIMPLE 0x04
#define ATTR_HEADOFQUEUE 0x05
#define ATTR_ORDERED 0x06
#define ATTR_ACA 0x07
/* cdb type */
#define TYPE_CMD 0x00
#define TYPE_MSG 0x01
/* Type defs used in the following structs */
#define BYTE __u8
#define WORD __u16
#define HWORD __u16
#define DWORD __u32
#define CISS_MAX_LUN 1024
#define LEVEL2LUN 1 /* index into Target(x) structure, due to byte swapping */
#define LEVEL3LUN 0
#pragma pack(1)
/* Command List Structure */
typedef union _SCSI3Addr_struct {
struct {
BYTE Dev;
BYTE Bus:6;
BYTE Mode:2; /* b00 */
} PeripDev;
struct {
BYTE DevLSB;
BYTE DevMSB:6;
BYTE Mode:2; /* b01 */
} LogDev;
struct {
BYTE Dev:5;
BYTE Bus:3;
BYTE Targ:6;
BYTE Mode:2; /* b10 */
} LogUnit;
} SCSI3Addr_struct;
typedef struct _PhysDevAddr_struct {
DWORD TargetId:24;
DWORD Bus:6;
DWORD Mode:2;
SCSI3Addr_struct Target[2]; /* 2 level target device addr */
} PhysDevAddr_struct;
typedef struct _LogDevAddr_struct {
DWORD VolId:30;
DWORD Mode:2;
BYTE reserved[4];
} LogDevAddr_struct;
typedef union _LUNAddr_struct {
BYTE LunAddrBytes[8];
SCSI3Addr_struct SCSI3Lun[4];
PhysDevAddr_struct PhysDev;
LogDevAddr_struct LogDev;
} LUNAddr_struct;
typedef struct _RequestBlock_struct {
BYTE CDBLen;
struct {
BYTE Type:3;
BYTE Attribute:3;
BYTE Direction:2;
} Type;
HWORD Timeout;
BYTE CDB[16];
} RequestBlock_struct;
typedef union _MoreErrInfo_struct{
struct {
BYTE Reserved[3];
BYTE Type;
DWORD ErrorInfo;
} Common_Info;
struct{
BYTE Reserved[2];
BYTE offense_size; /* size of offending entry */
BYTE offense_num; /* byte # of offense 0-base */
DWORD offense_value;
} Invalid_Cmd;
} MoreErrInfo_struct;
typedef struct _ErrorInfo_struct {
BYTE ScsiStatus;
BYTE SenseLen;
HWORD CommandStatus;
DWORD ResidualCnt;
MoreErrInfo_struct MoreErrInfo;
BYTE SenseInfo[SENSEINFOBYTES];
} ErrorInfo_struct;
#pragma pack()
#endif /* CCISS_DEFS_H */

128
include/linux/cciss_ioctl.h
View file

@ -3,6 +3,7 @@
#include <linux/types.h>
#include <linux/ioctl.h>
#include <linux/cciss_defs.h>
#define CCISS_IOC_MAGIC 'B'
@ -36,133 +37,6 @@ typedef __u32 DriverVer_type;
#define MAX_KMALLOC_SIZE 128000
#ifndef CCISS_CMD_H
// This defines are duplicated in cciss_cmd.h in the driver directory
//general boundary definitions
#define SENSEINFOBYTES 32//note that this value may vary between host implementations
//Command Status value
#define CMD_SUCCESS 0x0000
#define CMD_TARGET_STATUS 0x0001
#define CMD_DATA_UNDERRUN 0x0002
#define CMD_DATA_OVERRUN 0x0003
#define CMD_INVALID 0x0004
#define CMD_PROTOCOL_ERR 0x0005
#define CMD_HARDWARE_ERR 0x0006
#define CMD_CONNECTION_LOST 0x0007
#define CMD_ABORTED 0x0008
#define CMD_ABORT_FAILED 0x0009
#define CMD_UNSOLICITED_ABORT 0x000A
#define CMD_TIMEOUT 0x000B
#define CMD_UNABORTABLE 0x000C
//transfer direction
#define XFER_NONE 0x00
#define XFER_WRITE 0x01
#define XFER_READ 0x02
#define XFER_RSVD 0x03
//task attribute
#define ATTR_UNTAGGED 0x00
#define ATTR_SIMPLE 0x04
#define ATTR_HEADOFQUEUE 0x05
#define ATTR_ORDERED 0x06
#define ATTR_ACA 0x07
//cdb type
#define TYPE_CMD 0x00
#define TYPE_MSG 0x01
// Type defs used in the following structs
#define BYTE __u8
#define WORD __u16
#define HWORD __u16
#define DWORD __u32
#define CISS_MAX_LUN 1024
#define LEVEL2LUN 1 // index into Target(x) structure, due to byte swapping
#define LEVEL3LUN 0
#pragma pack(1)
//Command List Structure
typedef union _SCSI3Addr_struct {
struct {
BYTE Dev;
BYTE Bus:6;
BYTE Mode:2; // b00
} PeripDev;
struct {
BYTE DevLSB;
BYTE DevMSB:6;
BYTE Mode:2; // b01
} LogDev;
struct {
BYTE Dev:5;
BYTE Bus:3;
BYTE Targ:6;
BYTE Mode:2; // b10
} LogUnit;
} SCSI3Addr_struct;
typedef struct _PhysDevAddr_struct {
DWORD TargetId:24;
DWORD Bus:6;
DWORD Mode:2;
SCSI3Addr_struct Target[2]; //2 level target device addr
} PhysDevAddr_struct;
typedef struct _LogDevAddr_struct {
DWORD VolId:30;
DWORD Mode:2;
BYTE reserved[4];
} LogDevAddr_struct;
typedef union _LUNAddr_struct {
BYTE LunAddrBytes[8];
SCSI3Addr_struct SCSI3Lun[4];
PhysDevAddr_struct PhysDev;
LogDevAddr_struct LogDev;
} LUNAddr_struct;
typedef struct _RequestBlock_struct {
BYTE CDBLen;
struct {
BYTE Type:3;
BYTE Attribute:3;
BYTE Direction:2;
} Type;
HWORD Timeout;
BYTE CDB[16];
} RequestBlock_struct;
typedef union _MoreErrInfo_struct{
struct {
BYTE Reserved[3];
BYTE Type;
DWORD ErrorInfo;
}Common_Info;
struct{
BYTE Reserved[2];
BYTE offense_size;//size of offending entry
BYTE offense_num; //byte # of offense 0-base
DWORD offense_value;
}Invalid_Cmd;
}MoreErrInfo_struct;
typedef struct _ErrorInfo_struct {
BYTE ScsiStatus;
BYTE SenseLen;
HWORD CommandStatus;
DWORD ResidualCnt;
MoreErrInfo_struct MoreErrInfo;
BYTE SenseInfo[SENSEINFOBYTES];
} ErrorInfo_struct;
#pragma pack()
#endif /* CCISS_CMD_H */
typedef struct _IOCTL_Command_struct {
LUNAddr_struct LUN_info;
RequestBlock_struct Request;

2
include/linux/i2o.h
View file

@ -385,7 +385,7 @@
/* defines for max_sectors and max_phys_segments */
#define I2O_MAX_SECTORS 1024
#define I2O_MAX_SECTORS_LIMITED 128
#define I2O_MAX_PHYS_SEGMENTS MAX_PHYS_SEGMENTS
#define I2O_MAX_PHYS_SEGMENTS BLK_MAX_SEGMENTS
/*
* Message structures

2
include/linux/iocontext.h
View file

@ -49,8 +49,8 @@ struct io_context {
/*
* For request batching
*/
unsigned long last_waited; /* Time last woken after wait for request */
int nr_batch_requests; /* Number of requests left in the batch */
unsigned long last_waited; /* Time last woken after wait for request */
struct radix_tree_root radix_root;
struct hlist_head cic_list;

10
include/linux/pktcdvd.h
View file

@ -163,10 +163,8 @@ struct packet_iosched
atomic_t attention; /* Set to non-zero when queue processing is needed */
int writing; /* Non-zero when writing, zero when reading */
spinlock_t lock; /* Protecting read/write queue manipulations */
struct bio *read_queue;
struct bio *read_queue_tail;
struct bio *write_queue;
struct bio *write_queue_tail;
struct bio_list read_queue;
struct bio_list write_queue;
sector_t last_write; /* The sector where the last write ended */
int successive_reads;
};
@ -206,8 +204,8 @@ struct packet_data
spinlock_t lock; /* Lock protecting state transitions and */
/* orig_bios list */
struct bio *orig_bios; /* Original bios passed to pkt_make_request */
struct bio *orig_bios_tail;/* that will be handled by this packet */
struct bio_list orig_bios; /* Original bios passed to pkt_make_request */
/* that will be handled by this packet */
int write_size; /* Total size of all bios in the orig_bios */
/* list, measured in number of frames */

4
include/linux/sched.h
View file

@ -97,7 +97,7 @@ struct sched_param {
struct exec_domain;
struct futex_pi_state;
struct robust_list_head;
struct bio;
struct bio_list;
struct fs_struct;
struct bts_context;
struct perf_event_context;
@ -1454,7 +1454,7 @@ struct task_struct {
void *journal_info;
/* stacked block device info */
struct bio *bio_list, **bio_tail;
struct bio_list *bio_list;
/* VM state */
struct reclaim_state *reclaim_state;