struct request *next_rq;
};
+#define REQ_OP_SHIFT (8 * sizeof(u64) - REQ_OP_BITS)
+#define req_op(req) ((req)->cmd_flags >> REQ_OP_SHIFT)
+
+#define req_set_op(req, op) do { \
+ WARN_ON(op >= (1 << REQ_OP_BITS)); \
+ (req)->cmd_flags &= ((1ULL << REQ_OP_SHIFT) - 1); \
+ (req)->cmd_flags |= ((u64) (op) << REQ_OP_SHIFT); \
+} while (0)
+
+#define req_set_op_attrs(req, op, flags) do { \
+ req_set_op(req, op); \
+ (req)->cmd_flags |= flags; \
+} while (0)
+
static inline unsigned short req_get_ioprio(struct request *req)
{
return req->ioprio;
#define QUEUE_FLAG_DISCARD 14 /* supports DISCARD */
#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_SECERASE 17 /* supports secure erase */
#define QUEUE_FLAG_SAME_FORCE 18 /* force complete on same CPU */
#define QUEUE_FLAG_DEAD 19 /* queue tear-down finished */
#define QUEUE_FLAG_INIT_DONE 20 /* queue is initialized */
#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_queue_secure_erase(q) \
+ (test_bit(QUEUE_FLAG_SECERASE, &(q)->queue_flags))
#define blk_noretry_request(rq) \
((rq)->cmd_flags & (REQ_FAILFAST_DEV|REQ_FAILFAST_TRANSPORT| \
#define list_entry_rq(ptr) list_entry((ptr), struct request, queuelist)
-#define rq_data_dir(rq) ((int)((rq)->cmd_flags & 1))
+#define rq_data_dir(rq) (op_is_write(req_op(rq)) ? WRITE : READ)
/*
* Driver can handle struct request, if it either has an old style
/*
* We regard a request as sync, if either a read or a sync write
*/
-static inline bool rw_is_sync(unsigned int rw_flags)
+static inline bool rw_is_sync(int op, unsigned int rw_flags)
{
- return !(rw_flags & REQ_WRITE) || (rw_flags & REQ_SYNC);
+ return op == REQ_OP_READ || (rw_flags & REQ_SYNC);
}
static inline bool rq_is_sync(struct request *rq)
{
- return rw_is_sync(rq->cmd_flags);
+ return rw_is_sync(req_op(rq), rq->cmd_flags);
}
static inline bool blk_rl_full(struct request_list *rl, bool sync)
if (rq->cmd_type != REQ_TYPE_FS)
return false;
- if (rq->cmd_flags & REQ_NOMERGE_FLAGS)
- return false;
-
- return true;
-}
-
-static inline bool blk_check_merge_flags(unsigned int flags1,
- unsigned int flags2)
-{
- if ((flags1 & REQ_DISCARD) != (flags2 & REQ_DISCARD))
- return false;
-
- if ((flags1 & REQ_SECURE) != (flags2 & REQ_SECURE))
+ if (req_op(rq) == REQ_OP_FLUSH)
return false;
- if ((flags1 & REQ_WRITE_SAME) != (flags2 & REQ_WRITE_SAME))
+ if (rq->cmd_flags & REQ_NOMERGE_FLAGS)
return false;
return true;
}
#endif
+#ifdef CONFIG_PRINTK
+#define vfs_msg(sb, level, fmt, ...) \
+ __vfs_msg(sb, level, fmt, ##__VA_ARGS__)
+#else
+#define vfs_msg(sb, level, fmt, ...) \
+do { \
+ no_printk(fmt, ##__VA_ARGS__); \
+ __vfs_msg(sb, "", " "); \
+} while (0)
+#endif
+
extern int blk_register_queue(struct gendisk *disk);
extern void blk_unregister_queue(struct gendisk *disk);
extern blk_qc_t generic_make_request(struct bio *bio);
}
static inline unsigned int blk_queue_get_max_sectors(struct request_queue *q,
- unsigned int cmd_flags)
+ int op)
{
- if (unlikely(cmd_flags & REQ_DISCARD))
+ if (unlikely(op == REQ_OP_DISCARD))
return min(q->limits.max_discard_sectors, UINT_MAX >> 9);
- if (unlikely(cmd_flags & REQ_WRITE_SAME))
+ if (unlikely(op == REQ_OP_WRITE_SAME))
return q->limits.max_write_same_sectors;
return q->limits.max_sectors;
if (unlikely(rq->cmd_type != REQ_TYPE_FS))
return q->limits.max_hw_sectors;
- if (!q->limits.chunk_sectors || (rq->cmd_flags & REQ_DISCARD))
- return blk_queue_get_max_sectors(q, rq->cmd_flags);
+ if (!q->limits.chunk_sectors || (req_op(rq) == REQ_OP_DISCARD))
+ return blk_queue_get_max_sectors(q, req_op(rq));
return min(blk_max_size_offset(q, blk_rq_pos(rq)),
- blk_queue_get_max_sectors(q, rq->cmd_flags));
+ blk_queue_get_max_sectors(q, req_op(rq)));
}
static inline unsigned int blk_rq_count_bios(struct request *rq)
extern int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
sector_t nr_sects, gfp_t gfp_mask, unsigned long flags);
extern int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
- sector_t nr_sects, gfp_t gfp_mask, int type, struct bio **biop);
+ sector_t nr_sects, gfp_t gfp_mask, int flags,
+ struct bio **biop);
extern int blkdev_issue_write_same(struct block_device *bdev, sector_t sector,
sector_t nr_sects, gfp_t gfp_mask, struct page *page);
extern int blkdev_issue_zeroout(struct block_device *bdev, sector_t sector,
int (*ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);
int (*compat_ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);
long (*direct_access)(struct block_device *, sector_t, void __pmem **,
- pfn_t *);
+ pfn_t *, long);
unsigned int (*check_events) (struct gendisk *disk,
unsigned int clearing);
/* ->media_changed() is DEPRECATED, use ->check_events() instead */
extern int bdev_write_page(struct block_device *, sector_t, struct page *,
struct writeback_control *);
extern long bdev_direct_access(struct block_device *, struct blk_dax_ctl *);
+extern int bdev_dax_supported(struct super_block *, int);
+extern bool bdev_dax_capable(struct block_device *);
#else /* CONFIG_BLOCK */
struct block_device;
projects / linux-2.6-block.git / blobdiff