REQ_TYPE_PM_RESUME, /* resume request */
REQ_TYPE_PM_SHUTDOWN, /* shutdown request */
REQ_TYPE_SPECIAL, /* driver defined type */
- REQ_TYPE_LINUX_BLOCK, /* generic block layer message */
/*
* for ATA/ATAPI devices. this really doesn't belong here, ide should
* use REQ_TYPE_SPECIAL and use rq->cmd[0] with the range of driver
REQ_TYPE_ATA_PC,
};
-/*
- * For request of type REQ_TYPE_LINUX_BLOCK, rq->cmd[0] is the opcode being
- * sent down (similar to how REQ_TYPE_BLOCK_PC means that ->cmd[] holds a
- * SCSI cdb.
- *
- * 0x00 -> 0x3f are driver private, to be used for whatever purpose they need,
- * typically to differentiate REQ_TYPE_SPECIAL requests.
- *
- */
-enum {
- REQ_LB_OP_EJECT = 0x40, /* eject request */
- REQ_LB_OP_FLUSH = 0x41, /* flush request */
-};
-
-/*
- * request type modified bits. first four bits match BIO_RW* bits, important
- */
-enum rq_flag_bits {
- __REQ_RW, /* not set, read. set, write */
- __REQ_FAILFAST_DEV, /* no driver retries of device errors */
- __REQ_FAILFAST_TRANSPORT, /* no driver retries of transport errors */
- __REQ_FAILFAST_DRIVER, /* no driver retries of driver errors */
- /* above flags must match BIO_RW_* */
- __REQ_DISCARD, /* request to discard sectors */
- __REQ_SORTED, /* elevator knows about this request */
- __REQ_SOFTBARRIER, /* may not be passed by ioscheduler */
- __REQ_HARDBARRIER, /* may not be passed by drive either */
- __REQ_FUA, /* forced unit access */
- __REQ_NOMERGE, /* don't touch this for merging */
- __REQ_STARTED, /* drive already may have started this one */
- __REQ_DONTPREP, /* don't call prep for this one */
- __REQ_QUEUED, /* uses queueing */
- __REQ_ELVPRIV, /* elevator private data attached */
- __REQ_FAILED, /* set if the request failed */
- __REQ_QUIET, /* don't worry about errors */
- __REQ_PREEMPT, /* set for "ide_preempt" requests */
- __REQ_ORDERED_COLOR, /* is before or after barrier */
- __REQ_RW_SYNC, /* request is sync (sync write or read) */
- __REQ_ALLOCED, /* request came from our alloc pool */
- __REQ_RW_META, /* metadata io request */
- __REQ_COPY_USER, /* contains copies of user pages */
- __REQ_INTEGRITY, /* integrity metadata has been remapped */
- __REQ_NOIDLE, /* Don't anticipate more IO after this one */
- __REQ_IO_STAT, /* account I/O stat */
- __REQ_MIXED_MERGE, /* merge of different types, fail separately */
- __REQ_NR_BITS, /* stops here */
-};
-
-#define REQ_RW (1 << __REQ_RW)
-#define REQ_FAILFAST_DEV (1 << __REQ_FAILFAST_DEV)
-#define REQ_FAILFAST_TRANSPORT (1 << __REQ_FAILFAST_TRANSPORT)
-#define REQ_FAILFAST_DRIVER (1 << __REQ_FAILFAST_DRIVER)
-#define REQ_DISCARD (1 << __REQ_DISCARD)
-#define REQ_SORTED (1 << __REQ_SORTED)
-#define REQ_SOFTBARRIER (1 << __REQ_SOFTBARRIER)
-#define REQ_HARDBARRIER (1 << __REQ_HARDBARRIER)
-#define REQ_FUA (1 << __REQ_FUA)
-#define REQ_NOMERGE (1 << __REQ_NOMERGE)
-#define REQ_STARTED (1 << __REQ_STARTED)
-#define REQ_DONTPREP (1 << __REQ_DONTPREP)
-#define REQ_QUEUED (1 << __REQ_QUEUED)
-#define REQ_ELVPRIV (1 << __REQ_ELVPRIV)
-#define REQ_FAILED (1 << __REQ_FAILED)
-#define REQ_QUIET (1 << __REQ_QUIET)
-#define REQ_PREEMPT (1 << __REQ_PREEMPT)
-#define REQ_ORDERED_COLOR (1 << __REQ_ORDERED_COLOR)
-#define REQ_RW_SYNC (1 << __REQ_RW_SYNC)
-#define REQ_ALLOCED (1 << __REQ_ALLOCED)
-#define REQ_RW_META (1 << __REQ_RW_META)
-#define REQ_COPY_USER (1 << __REQ_COPY_USER)
-#define REQ_INTEGRITY (1 << __REQ_INTEGRITY)
-#define REQ_NOIDLE (1 << __REQ_NOIDLE)
-#define REQ_IO_STAT (1 << __REQ_IO_STAT)
-#define REQ_MIXED_MERGE (1 << __REQ_MIXED_MERGE)
-
-#define REQ_FAILFAST_MASK (REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | \
- REQ_FAILFAST_DRIVER)
-
#define BLK_MAX_CDB 16
/*
typedef void (request_fn_proc) (struct request_queue *q);
typedef int (make_request_fn) (struct request_queue *q, struct bio *bio);
typedef int (prep_rq_fn) (struct request_queue *, struct request *);
+typedef void (unprep_rq_fn) (struct request_queue *, struct request *);
typedef void (unplug_fn) (struct request_queue *);
struct bio_vec;
};
typedef int (merge_bvec_fn) (struct request_queue *, struct bvec_merge_data *,
struct bio_vec *);
-typedef void (prepare_flush_fn) (struct request_queue *, struct request *);
typedef void (softirq_done_fn)(struct request *);
typedef int (dma_drain_needed_fn)(struct request *);
typedef int (lld_busy_fn) (struct request_queue *q);
request_fn_proc *request_fn;
make_request_fn *make_request_fn;
prep_rq_fn *prep_rq_fn;
+ unprep_rq_fn *unprep_rq_fn;
unplug_fn *unplug_fn;
merge_bvec_fn *merge_bvec_fn;
- prepare_flush_fn *prepare_flush_fn;
softirq_done_fn *softirq_done_fn;
rq_timed_out_fn *rq_timed_out_fn;
dma_drain_needed_fn *dma_drain_needed;
#define QUEUE_FLAG_DISCARD 16 /* supports DISCARD */
#define QUEUE_FLAG_NOXMERGES 17 /* No extended merges */
#define QUEUE_FLAG_ADD_RANDOM 18 /* Contributes to random pool */
+#define QUEUE_FLAG_SECDISCARD 19 /* supports SECDISCARD */
#define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
(1 << QUEUE_FLAG_CLUSTER) | \
#define blk_queue_stackable(q) \
test_bit(QUEUE_FLAG_STACKABLE, &(q)->queue_flags)
#define blk_queue_discard(q) test_bit(QUEUE_FLAG_DISCARD, &(q)->queue_flags)
+#define blk_queue_secdiscard(q) (blk_queue_discard(q) && \
+ test_bit(QUEUE_FLAG_SECDISCARD, &(q)->queue_flags))
+
+#define blk_noretry_request(rq) \
+ ((rq)->cmd_flags & (REQ_FAILFAST_DEV|REQ_FAILFAST_TRANSPORT| \
+ REQ_FAILFAST_DRIVER))
+
+#define blk_account_rq(rq) \
+ (((rq)->cmd_flags & REQ_STARTED) && \
+ ((rq)->cmd_type == REQ_TYPE_FS || \
+ ((rq)->cmd_flags & REQ_DISCARD)))
-#define blk_fs_request(rq) ((rq)->cmd_type == REQ_TYPE_FS)
-#define blk_pc_request(rq) ((rq)->cmd_type == REQ_TYPE_BLOCK_PC)
-#define blk_special_request(rq) ((rq)->cmd_type == REQ_TYPE_SPECIAL)
-#define blk_sense_request(rq) ((rq)->cmd_type == REQ_TYPE_SENSE)
-
-#define blk_failfast_dev(rq) ((rq)->cmd_flags & REQ_FAILFAST_DEV)
-#define blk_failfast_transport(rq) ((rq)->cmd_flags & REQ_FAILFAST_TRANSPORT)
-#define blk_failfast_driver(rq) ((rq)->cmd_flags & REQ_FAILFAST_DRIVER)
-#define blk_noretry_request(rq) (blk_failfast_dev(rq) || \
- blk_failfast_transport(rq) || \
- blk_failfast_driver(rq))
-#define blk_rq_started(rq) ((rq)->cmd_flags & REQ_STARTED)
-#define blk_rq_io_stat(rq) ((rq)->cmd_flags & REQ_IO_STAT)
-#define blk_rq_quiet(rq) ((rq)->cmd_flags & REQ_QUIET)
-
-#define blk_account_rq(rq) (blk_rq_started(rq) && (blk_fs_request(rq) || blk_discard_rq(rq)))
-
-#define blk_pm_suspend_request(rq) ((rq)->cmd_type == REQ_TYPE_PM_SUSPEND)
-#define blk_pm_resume_request(rq) ((rq)->cmd_type == REQ_TYPE_PM_RESUME)
#define blk_pm_request(rq) \
- (blk_pm_suspend_request(rq) || blk_pm_resume_request(rq))
+ ((rq)->cmd_type == REQ_TYPE_PM_SUSPEND || \
+ (rq)->cmd_type == REQ_TYPE_PM_RESUME)
#define blk_rq_cpu_valid(rq) ((rq)->cpu != -1)
-#define blk_sorted_rq(rq) ((rq)->cmd_flags & REQ_SORTED)
-#define blk_barrier_rq(rq) ((rq)->cmd_flags & REQ_HARDBARRIER)
-#define blk_fua_rq(rq) ((rq)->cmd_flags & REQ_FUA)
-#define blk_discard_rq(rq) ((rq)->cmd_flags & REQ_DISCARD)
#define blk_bidi_rq(rq) ((rq)->next_rq != NULL)
/* rq->queuelist of dequeued request must be list_empty() */
#define blk_queued_rq(rq) (!list_empty(&(rq)->queuelist))
*/
static inline bool rw_is_sync(unsigned int rw_flags)
{
- return !(rw_flags & REQ_RW) || (rw_flags & REQ_RW_SYNC);
+ return !(rw_flags & REQ_WRITE) || (rw_flags & REQ_SYNC);
}
static inline bool rq_is_sync(struct request *rq)
return rw_is_sync(rq->cmd_flags);
}
-#define rq_is_meta(rq) ((rq)->cmd_flags & REQ_RW_META)
-#define rq_noidle(rq) ((rq)->cmd_flags & REQ_NOIDLE)
-
static inline int blk_queue_full(struct request_queue *q, int sync)
{
if (sync)
(REQ_NOMERGE | REQ_STARTED | REQ_HARDBARRIER | REQ_SOFTBARRIER)
#define rq_mergeable(rq) \
(!((rq)->cmd_flags & RQ_NOMERGE_FLAGS) && \
- (blk_discard_rq(rq) || blk_fs_request((rq))))
+ (((rq)->cmd_flags & REQ_DISCARD) || \
+ (rq)->cmd_type == REQ_TYPE_FS))
/*
* q->prep_rq_fn return values
#define BLK_BOUNCE_HIGH -1ULL
#endif
#define BLK_BOUNCE_ANY (-1ULL)
-#define BLK_BOUNCE_ISA (ISA_DMA_THRESHOLD)
+#define BLK_BOUNCE_ISA (DMA_BIT_MASK(24))
/*
* default timeout for SG_IO if none specified
gfp_t);
extern void blk_insert_request(struct request_queue *, struct request *, int, void *);
extern void blk_requeue_request(struct request_queue *, struct request *);
+extern void blk_add_request_payload(struct request *rq, struct page *page,
+ unsigned int len);
extern int blk_rq_check_limits(struct request_queue *q, struct request *rq);
extern int blk_lld_busy(struct request_queue *q);
extern int blk_rq_prep_clone(struct request *rq, struct request *rq_src,
extern void __blk_complete_request(struct request *);
extern void blk_abort_request(struct request *);
extern void blk_abort_queue(struct request_queue *);
+extern void blk_unprep_request(struct request *);
/*
* Access functions for manipulating queue properties
extern void blk_queue_lld_busy(struct request_queue *q, lld_busy_fn *fn);
extern void blk_queue_segment_boundary(struct request_queue *, unsigned long);
extern void blk_queue_prep_rq(struct request_queue *, prep_rq_fn *pfn);
+extern void blk_queue_unprep_rq(struct request_queue *, unprep_rq_fn *ufn);
extern void blk_queue_merge_bvec(struct request_queue *, merge_bvec_fn *);
extern void blk_queue_dma_alignment(struct request_queue *, int);
extern void blk_queue_update_dma_alignment(struct request_queue *, int);
extern void blk_queue_rq_timed_out(struct request_queue *, rq_timed_out_fn *);
extern void blk_queue_rq_timeout(struct request_queue *, unsigned int);
extern struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev);
-extern int blk_queue_ordered(struct request_queue *, unsigned, prepare_flush_fn *);
+extern int blk_queue_ordered(struct request_queue *, unsigned);
extern bool blk_do_ordered(struct request_queue *, struct request **);
extern unsigned blk_ordered_cur_seq(struct request_queue *);
extern unsigned blk_ordered_req_seq(struct request *);
}
enum{
BLKDEV_WAIT, /* wait for completion */
- BLKDEV_BARRIER, /*issue request with barrier */
+ BLKDEV_BARRIER, /* issue request with barrier */
+ BLKDEV_SECURE, /* secure discard */
};
#define BLKDEV_IFL_WAIT (1 << BLKDEV_WAIT)
#define BLKDEV_IFL_BARRIER (1 << BLKDEV_BARRIER)
+#define BLKDEV_IFL_SECURE (1 << BLKDEV_SECURE)
extern int blkdev_issue_flush(struct block_device *, gfp_t, sector_t *,
unsigned long);
extern int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
{
block <<= (sb->s_blocksize_bits - 9);
nr_blocks <<= (sb->s_blocksize_bits - 9);
- return blkdev_issue_discard(sb->s_bdev, block, nr_blocks, GFP_KERNEL,
+ return blkdev_issue_discard(sb->s_bdev, block, nr_blocks, GFP_NOFS,
BLKDEV_IFL_WAIT | BLKDEV_IFL_BARRIER);
}
struct block_device_operations {
int (*open) (struct block_device *, fmode_t);
int (*release) (struct gendisk *, fmode_t);
- int (*locked_ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);
int (*ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);
int (*compat_ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);
int (*direct_access) (struct block_device *, sector_t,
git.openpandora.org / pandora-kernel.git / blobdiff