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-rw-r--r--include/linux/bio.h85
1 files changed, 13 insertions, 72 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 9faebf7f9a33..583c10810e32 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -41,44 +41,9 @@
#endif
#define BIO_MAX_PAGES 256
-#define BIO_MAX_SIZE (BIO_MAX_PAGES << PAGE_SHIFT)
-#define BIO_MAX_SECTORS (BIO_MAX_SIZE >> 9)
-/*
- * upper 16 bits of bi_rw define the io priority of this bio
- */
-#define BIO_PRIO_SHIFT (8 * sizeof(unsigned long) - IOPRIO_BITS)
-#define bio_prio(bio) ((bio)->bi_rw >> BIO_PRIO_SHIFT)
-#define bio_prio_valid(bio) ioprio_valid(bio_prio(bio))
-
-#define bio_set_prio(bio, prio) do { \
- WARN_ON(prio >= (1 << IOPRIO_BITS)); \
- (bio)->bi_rw &= ((1UL << BIO_PRIO_SHIFT) - 1); \
- (bio)->bi_rw |= ((unsigned long) (prio) << BIO_PRIO_SHIFT); \
-} while (0)
-
-/*
- * various member access, note that bio_data should of course not be used
- * on highmem page vectors
- */
-#define __bvec_iter_bvec(bvec, iter) (&(bvec)[(iter).bi_idx])
-
-#define bvec_iter_page(bvec, iter) \
- (__bvec_iter_bvec((bvec), (iter))->bv_page)
-
-#define bvec_iter_len(bvec, iter) \
- min((iter).bi_size, \
- __bvec_iter_bvec((bvec), (iter))->bv_len - (iter).bi_bvec_done)
-
-#define bvec_iter_offset(bvec, iter) \
- (__bvec_iter_bvec((bvec), (iter))->bv_offset + (iter).bi_bvec_done)
-
-#define bvec_iter_bvec(bvec, iter) \
-((struct bio_vec) { \
- .bv_page = bvec_iter_page((bvec), (iter)), \
- .bv_len = bvec_iter_len((bvec), (iter)), \
- .bv_offset = bvec_iter_offset((bvec), (iter)), \
-})
+#define bio_prio(bio) (bio)->bi_ioprio
+#define bio_set_prio(bio, prio) ((bio)->bi_ioprio = prio)
#define bio_iter_iovec(bio, iter) \
bvec_iter_bvec((bio)->bi_io_vec, (iter))
@@ -106,18 +71,23 @@ static inline bool bio_has_data(struct bio *bio)
{
if (bio &&
bio->bi_iter.bi_size &&
- !(bio->bi_rw & REQ_DISCARD))
+ bio_op(bio) != REQ_OP_DISCARD)
return true;
return false;
}
+static inline bool bio_no_advance_iter(struct bio *bio)
+{
+ return bio_op(bio) == REQ_OP_DISCARD || bio_op(bio) == REQ_OP_WRITE_SAME;
+}
+
static inline bool bio_is_rw(struct bio *bio)
{
if (!bio_has_data(bio))
return false;
- if (bio->bi_rw & BIO_NO_ADVANCE_ITER_MASK)
+ if (bio_no_advance_iter(bio))
return false;
return true;
@@ -193,39 +163,12 @@ static inline void *bio_data(struct bio *bio)
#define bio_for_each_segment_all(bvl, bio, i) \
for (i = 0, bvl = (bio)->bi_io_vec; i < (bio)->bi_vcnt; i++, bvl++)
-static inline void bvec_iter_advance(struct bio_vec *bv, struct bvec_iter *iter,
- unsigned bytes)
-{
- WARN_ONCE(bytes > iter->bi_size,
- "Attempted to advance past end of bvec iter\n");
-
- while (bytes) {
- unsigned len = min(bytes, bvec_iter_len(bv, *iter));
-
- bytes -= len;
- iter->bi_size -= len;
- iter->bi_bvec_done += len;
-
- if (iter->bi_bvec_done == __bvec_iter_bvec(bv, *iter)->bv_len) {
- iter->bi_bvec_done = 0;
- iter->bi_idx++;
- }
- }
-}
-
-#define for_each_bvec(bvl, bio_vec, iter, start) \
- for (iter = (start); \
- (iter).bi_size && \
- ((bvl = bvec_iter_bvec((bio_vec), (iter))), 1); \
- bvec_iter_advance((bio_vec), &(iter), (bvl).bv_len))
-
-
static inline void bio_advance_iter(struct bio *bio, struct bvec_iter *iter,
unsigned bytes)
{
iter->bi_sector += bytes >> 9;
- if (bio->bi_rw & BIO_NO_ADVANCE_ITER_MASK)
+ if (bio_no_advance_iter(bio))
iter->bi_size -= bytes;
else
bvec_iter_advance(bio->bi_io_vec, iter, bytes);
@@ -253,10 +196,10 @@ static inline unsigned bio_segments(struct bio *bio)
* differently:
*/
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio_op(bio) == REQ_OP_DISCARD)
return 1;
- if (bio->bi_rw & REQ_WRITE_SAME)
+ if (bio_op(bio) == REQ_OP_WRITE_SAME)
return 1;
bio_for_each_segment(bv, bio, iter)
@@ -473,7 +416,7 @@ static inline void bio_io_error(struct bio *bio)
struct request_queue;
extern int bio_phys_segments(struct request_queue *, struct bio *);
-extern int submit_bio_wait(int rw, struct bio *bio);
+extern int submit_bio_wait(struct bio *bio);
extern void bio_advance(struct bio *, unsigned);
extern void bio_init(struct bio *);
@@ -720,8 +663,6 @@ static inline void bio_inc_remaining(struct bio *bio)
* and the bvec_slabs[].
*/
#define BIO_POOL_SIZE 2
-#define BIOVEC_NR_POOLS 6
-#define BIOVEC_MAX_IDX (BIOVEC_NR_POOLS - 1)
struct bio_set {
struct kmem_cache *bio_slab;