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-rw-r--r--include/linux/bio.h38
-rw-r--r--include/linux/blk-cgroup.h2
-rw-r--r--include/linux/blk_types.h10
-rw-r--r--include/linux/blkdev.h36
-rw-r--r--include/linux/device-mapper.h4
-rw-r--r--include/linux/genhd.h33
-rw-r--r--include/linux/swap.h4
7 files changed, 79 insertions, 48 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 5e963a6d7c14..b9b6e046b52e 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -187,17 +187,6 @@ static inline void *bio_data(struct bio *bio)
__BIO_SEG_BOUNDARY(bvec_to_phys((b1)), bvec_to_phys((b2)) + (b2)->bv_len, queue_segment_boundary((q)))
/*
- * Check if adding a bio_vec after bprv with offset would create a gap in
- * the SG list. Most drivers don't care about this, but some do.
- */
-static inline bool bvec_gap_to_prev(struct bio_vec *bprv, unsigned int offset)
-{
- return offset || ((bprv->bv_offset + bprv->bv_len) & (PAGE_SIZE - 1));
-}
-
-#define bio_io_error(bio) bio_endio((bio), -EIO)
-
-/*
* drivers should _never_ use the all version - the bio may have been split
* before it got to the driver and the driver won't own all of it
*/
@@ -306,6 +295,21 @@ static inline void bio_cnt_set(struct bio *bio, unsigned int count)
atomic_set(&bio->__bi_cnt, count);
}
+static inline bool bio_flagged(struct bio *bio, unsigned int bit)
+{
+ return (bio->bi_flags & (1U << bit)) != 0;
+}
+
+static inline void bio_set_flag(struct bio *bio, unsigned int bit)
+{
+ bio->bi_flags |= (1U << bit);
+}
+
+static inline void bio_clear_flag(struct bio *bio, unsigned int bit)
+{
+ bio->bi_flags &= ~(1U << bit);
+}
+
enum bip_flags {
BIP_BLOCK_INTEGRITY = 1 << 0, /* block layer owns integrity data */
BIP_MAPPED_INTEGRITY = 1 << 1, /* ref tag has been remapped */
@@ -426,7 +430,14 @@ static inline struct bio *bio_clone_kmalloc(struct bio *bio, gfp_t gfp_mask)
}
-extern void bio_endio(struct bio *, int);
+extern void bio_endio(struct bio *);
+
+static inline void bio_io_error(struct bio *bio)
+{
+ bio->bi_error = -EIO;
+ bio_endio(bio);
+}
+
struct request_queue;
extern int bio_phys_segments(struct request_queue *, struct bio *);
@@ -440,7 +451,6 @@ void bio_chain(struct bio *, struct bio *);
extern int bio_add_page(struct bio *, struct page *, unsigned int,unsigned int);
extern int bio_add_pc_page(struct request_queue *, struct bio *, struct page *,
unsigned int, unsigned int);
-extern int bio_get_nr_vecs(struct block_device *);
struct rq_map_data;
extern struct bio *bio_map_user_iov(struct request_queue *,
const struct iov_iter *, gfp_t);
@@ -717,7 +727,7 @@ extern void bio_integrity_free(struct bio *);
extern int bio_integrity_add_page(struct bio *, struct page *, unsigned int, unsigned int);
extern bool bio_integrity_enabled(struct bio *bio);
extern int bio_integrity_prep(struct bio *);
-extern void bio_integrity_endio(struct bio *, int);
+extern void bio_integrity_endio(struct bio *);
extern void bio_integrity_advance(struct bio *, unsigned int);
extern void bio_integrity_trim(struct bio *, unsigned int, unsigned int);
extern int bio_integrity_clone(struct bio *, struct bio *, gfp_t);
diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h
index 1b62d768c7df..a4cd1641e9e2 100644
--- a/include/linux/blk-cgroup.h
+++ b/include/linux/blk-cgroup.h
@@ -374,7 +374,7 @@ static inline struct request_list *blk_get_rl(struct request_queue *q,
* root_rl in such cases.
*/
blkg = blkg_lookup_create(blkcg, q);
- if (unlikely(IS_ERR(blkg)))
+ if (IS_ERR(blkg))
goto root_rl;
blkg_get(blkg);
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 7303b3405520..4b7b4ebaa633 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -14,7 +14,7 @@ struct page;
struct block_device;
struct io_context;
struct cgroup_subsys_state;
-typedef void (bio_end_io_t) (struct bio *, int);
+typedef void (bio_end_io_t) (struct bio *);
typedef void (bio_destructor_t) (struct bio *);
/*
@@ -46,7 +46,8 @@ struct bvec_iter {
struct bio {
struct bio *bi_next; /* request queue link */
struct block_device *bi_bdev;
- unsigned long bi_flags; /* status, command, etc */
+ unsigned int bi_flags; /* status, command, etc */
+ int bi_error;
unsigned long bi_rw; /* bottom bits READ/WRITE,
* top bits priority
*/
@@ -111,7 +112,6 @@ struct bio {
/*
* bio flags
*/
-#define BIO_UPTODATE 0 /* ok after I/O completion */
#define BIO_SEG_VALID 1 /* bi_phys_segments valid */
#define BIO_CLONED 2 /* doesn't own data */
#define BIO_BOUNCED 3 /* bio is a bounce bio */
@@ -129,14 +129,12 @@ struct bio {
#define BIO_RESET_BITS 13
#define BIO_OWNS_VEC 13 /* bio_free() should free bvec */
-#define bio_flagged(bio, flag) ((bio)->bi_flags & (1 << (flag)))
-
/*
* top 4 bits of bio flags indicate the pool this bio came from
*/
#define BIO_POOL_BITS (4)
#define BIO_POOL_NONE ((1UL << BIO_POOL_BITS) - 1)
-#define BIO_POOL_OFFSET (BITS_PER_LONG - BIO_POOL_BITS)
+#define BIO_POOL_OFFSET (32 - BIO_POOL_BITS)
#define BIO_POOL_MASK (1UL << BIO_POOL_OFFSET)
#define BIO_POOL_IDX(bio) ((bio)->bi_flags >> BIO_POOL_OFFSET)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index d4068c17d0df..a622f270f09e 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -213,14 +213,6 @@ typedef int (prep_rq_fn) (struct request_queue *, struct request *);
typedef void (unprep_rq_fn) (struct request_queue *, struct request *);
struct bio_vec;
-struct bvec_merge_data {
- struct block_device *bi_bdev;
- sector_t bi_sector;
- unsigned bi_size;
- unsigned long bi_rw;
-};
-typedef int (merge_bvec_fn) (struct request_queue *, struct bvec_merge_data *,
- struct bio_vec *);
typedef void (softirq_done_fn)(struct request *);
typedef int (dma_drain_needed_fn)(struct request *);
typedef int (lld_busy_fn) (struct request_queue *q);
@@ -258,6 +250,7 @@ struct blk_queue_tag {
struct queue_limits {
unsigned long bounce_pfn;
unsigned long seg_boundary_mask;
+ unsigned long virt_boundary_mask;
unsigned int max_hw_sectors;
unsigned int chunk_sectors;
@@ -268,6 +261,7 @@ struct queue_limits {
unsigned int io_min;
unsigned int io_opt;
unsigned int max_discard_sectors;
+ unsigned int max_hw_discard_sectors;
unsigned int max_write_same_sectors;
unsigned int discard_granularity;
unsigned int discard_alignment;
@@ -305,7 +299,6 @@ struct request_queue {
make_request_fn *make_request_fn;
prep_rq_fn *prep_rq_fn;
unprep_rq_fn *unprep_rq_fn;
- merge_bvec_fn *merge_bvec_fn;
softirq_done_fn *softirq_done_fn;
rq_timed_out_fn *rq_timed_out_fn;
dma_drain_needed_fn *dma_drain_needed;
@@ -462,6 +455,7 @@ struct request_queue {
struct blk_mq_tag_set *tag_set;
struct list_head tag_set_list;
+ struct bio_set *bio_split;
};
#define QUEUE_FLAG_QUEUED 1 /* uses generic tag queueing */
@@ -486,7 +480,6 @@ struct request_queue {
#define QUEUE_FLAG_DEAD 19 /* queue tear-down finished */
#define QUEUE_FLAG_INIT_DONE 20 /* queue is initialized */
#define QUEUE_FLAG_NO_SG_MERGE 21 /* don't attempt to merge SG segments*/
-#define QUEUE_FLAG_SG_GAPS 22 /* queue doesn't support SG gaps */
#define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
(1 << QUEUE_FLAG_STACKABLE) | \
@@ -782,6 +775,8 @@ extern void blk_rq_unprep_clone(struct request *rq);
extern int blk_insert_cloned_request(struct request_queue *q,
struct request *rq);
extern void blk_delay_queue(struct request_queue *, unsigned long);
+extern void blk_queue_split(struct request_queue *, struct bio **,
+ struct bio_set *);
extern void blk_recount_segments(struct request_queue *, struct bio *);
extern int scsi_verify_blk_ioctl(struct block_device *, unsigned int);
extern int scsi_cmd_blk_ioctl(struct block_device *, fmode_t,
@@ -986,9 +981,9 @@ extern int blk_queue_dma_drain(struct request_queue *q,
void *buf, unsigned int size);
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_virt_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_softirq_done(struct request_queue *, softirq_done_fn *);
@@ -1138,6 +1133,7 @@ extern int blk_verify_command(unsigned char *cmd, fmode_t has_write_perm);
enum blk_default_limits {
BLK_MAX_SEGMENTS = 128,
BLK_SAFE_MAX_SECTORS = 255,
+ BLK_DEF_MAX_SECTORS = 2560,
BLK_MAX_SEGMENT_SIZE = 65536,
BLK_SEG_BOUNDARY_MASK = 0xFFFFFFFFUL,
};
@@ -1154,6 +1150,11 @@ static inline unsigned long queue_segment_boundary(struct request_queue *q)
return q->limits.seg_boundary_mask;
}
+static inline unsigned long queue_virt_boundary(struct request_queue *q)
+{
+ return q->limits.virt_boundary_mask;
+}
+
static inline unsigned int queue_max_sectors(struct request_queue *q)
{
return q->limits.max_sectors;
@@ -1354,6 +1355,19 @@ static inline void put_dev_sector(Sector p)
page_cache_release(p.v);
}
+/*
+ * Check if adding a bio_vec after bprv with offset would create a gap in
+ * the SG list. Most drivers don't care about this, but some do.
+ */
+static inline bool bvec_gap_to_prev(struct request_queue *q,
+ struct bio_vec *bprv, unsigned int offset)
+{
+ if (!queue_virt_boundary(q))
+ return false;
+ return offset ||
+ ((bprv->bv_offset + bprv->bv_len) & queue_virt_boundary(q));
+}
+
struct work_struct;
int kblockd_schedule_work(struct work_struct *work);
int kblockd_schedule_delayed_work(struct delayed_work *dwork, unsigned long delay);
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 51cc1deb7af3..76d23fa8c7d3 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -82,9 +82,6 @@ typedef int (*dm_message_fn) (struct dm_target *ti, unsigned argc, char **argv);
typedef int (*dm_ioctl_fn) (struct dm_target *ti, unsigned int cmd,
unsigned long arg);
-typedef int (*dm_merge_fn) (struct dm_target *ti, struct bvec_merge_data *bvm,
- struct bio_vec *biovec, int max_size);
-
/*
* These iteration functions are typically used to check (and combine)
* properties of underlying devices.
@@ -160,7 +157,6 @@ struct target_type {
dm_status_fn status;
dm_message_fn message;
dm_ioctl_fn ioctl;
- dm_merge_fn merge;
dm_busy_fn busy;
dm_iterate_devices_fn iterate_devices;
dm_io_hints_fn io_hints;
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index ec274e0f4ed2..2adbfa6d02bc 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -13,6 +13,7 @@
#include <linux/kdev_t.h>
#include <linux/rcupdate.h>
#include <linux/slab.h>
+#include <linux/percpu-refcount.h>
#ifdef CONFIG_BLOCK
@@ -124,7 +125,7 @@ struct hd_struct {
#else
struct disk_stats dkstats;
#endif
- atomic_t ref;
+ struct percpu_ref ref;
struct rcu_head rcu_head;
};
@@ -611,7 +612,7 @@ extern struct hd_struct * __must_check add_partition(struct gendisk *disk,
sector_t len, int flags,
struct partition_meta_info
*info);
-extern void __delete_partition(struct hd_struct *);
+extern void __delete_partition(struct percpu_ref *);
extern void delete_partition(struct gendisk *, int);
extern void printk_all_partitions(void);
@@ -640,27 +641,39 @@ extern ssize_t part_fail_store(struct device *dev,
const char *buf, size_t count);
#endif /* CONFIG_FAIL_MAKE_REQUEST */
-static inline void hd_ref_init(struct hd_struct *part)
+static inline int hd_ref_init(struct hd_struct *part)
{
- atomic_set(&part->ref, 1);
- smp_mb();
+ if (percpu_ref_init(&part->ref, __delete_partition, 0,
+ GFP_KERNEL))
+ return -ENOMEM;
+ return 0;
}
static inline void hd_struct_get(struct hd_struct *part)
{
- atomic_inc(&part->ref);
- smp_mb__after_atomic();
+ percpu_ref_get(&part->ref);
}
static inline int hd_struct_try_get(struct hd_struct *part)
{
- return atomic_inc_not_zero(&part->ref);
+ return percpu_ref_tryget_live(&part->ref);
}
static inline void hd_struct_put(struct hd_struct *part)
{
- if (atomic_dec_and_test(&part->ref))
- __delete_partition(part);
+ percpu_ref_put(&part->ref);
+}
+
+static inline void hd_struct_kill(struct hd_struct *part)
+{
+ percpu_ref_kill(&part->ref);
+}
+
+static inline void hd_free_part(struct hd_struct *part)
+{
+ free_part_stats(part);
+ free_part_info(part);
+ percpu_ref_exit(&part->ref);
}
/*
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 38874729dc5f..31496d201fdc 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -373,9 +373,9 @@ static inline void mem_cgroup_uncharge_swap(swp_entry_t entry)
/* linux/mm/page_io.c */
extern int swap_readpage(struct page *);
extern int swap_writepage(struct page *page, struct writeback_control *wbc);
-extern void end_swap_bio_write(struct bio *bio, int err);
+extern void end_swap_bio_write(struct bio *bio);
extern int __swap_writepage(struct page *page, struct writeback_control *wbc,
- void (*end_write_func)(struct bio *, int));
+ bio_end_io_t end_write_func);
extern int swap_set_page_dirty(struct page *page);
int add_swap_extent(struct swap_info_struct *sis, unsigned long start_page,
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-02 18:19:53 +0000