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| author | Jens Axboe <axboe@fb.com> | 2015-07-24 12:37:59 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-07-29 08:55:20 -0600 |
| commit | b7c44ed9d2fc6b461378c65eaf144ccc80a47772 (patch) | |
| tree | 2f38bdc1cf7ea6c924f6e1d52cf5913c370e08b6 /block/bio.c | |
| parent | 4246a0b63bd8f56a1469b12eafeb875b1041a451 (diff) | |
| download | linux-stable-b7c44ed9d2fc6b461378c65eaf144ccc80a47772.tar.gz linux-stable-b7c44ed9d2fc6b461378c65eaf144ccc80a47772.tar.bz2 linux-stable-b7c44ed9d2fc6b461378c65eaf144ccc80a47772.zip | |
block: manipulate bio->bi_flags through helpers
Some places use helpers now, others don't. We only have the 'is set'
helper, add helpers for setting and clearing flags too.
It was a bit of a mess of atomic vs non-atomic access. With
BIO_UPTODATE gone, we don't have any risk of concurrent access to the
flags. So relax the restriction and don't make any of them atomic. The
flags that do have serialization issues (reffed and chained), we
already handle those separately.
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/bio.c')
| -rw-r--r-- | block/bio.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/block/bio.c b/block/bio.c index a23f489f398f..911ae8f82752 100644 --- a/block/bio.c +++ b/block/bio.c @@ -311,7 +311,7 @@ static void bio_chain_endio(struct bio *bio) */ static inline void bio_inc_remaining(struct bio *bio) { - bio->bi_flags |= (1 << BIO_CHAIN); + bio_set_flag(bio, BIO_CHAIN); smp_mb__before_atomic(); atomic_inc(&bio->__bi_remaining); } @@ -495,7 +495,7 @@ struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs) if (unlikely(!bvl)) goto err_free; - bio->bi_flags |= 1 << BIO_OWNS_VEC; + bio_set_flag(bio, BIO_OWNS_VEC); } else if (nr_iovecs) { bvl = bio->bi_inline_vecs; } @@ -580,7 +580,7 @@ void __bio_clone_fast(struct bio *bio, struct bio *bio_src) * so we don't set nor calculate new physical/hw segment counts here */ bio->bi_bdev = bio_src->bi_bdev; - bio->bi_flags |= 1 << BIO_CLONED; + bio_set_flag(bio, BIO_CLONED); bio->bi_rw = bio_src->bi_rw; bio->bi_iter = bio_src->bi_iter; bio->bi_io_vec = bio_src->bi_io_vec; @@ -829,7 +829,7 @@ static int __bio_add_page(struct request_queue *q, struct bio *bio, struct page /* If we may be able to merge these biovecs, force a recount */ if (bio->bi_vcnt > 1 && (BIOVEC_PHYS_MERGEABLE(bvec-1, bvec))) - bio->bi_flags &= ~(1 << BIO_SEG_VALID); + bio_clear_flag(bio, BIO_SEG_VALID); done: return len; @@ -1390,7 +1390,7 @@ struct bio *bio_map_user_iov(struct request_queue *q, if (iter->type & WRITE) bio->bi_rw |= REQ_WRITE; - bio->bi_flags |= (1 << BIO_USER_MAPPED); + bio_set_flag(bio, BIO_USER_MAPPED); /* * subtle -- if __bio_map_user() ended up bouncing a bio, @@ -1770,7 +1770,7 @@ static inline bool bio_remaining_done(struct bio *bio) BUG_ON(atomic_read(&bio->__bi_remaining) <= 0); if (atomic_dec_and_test(&bio->__bi_remaining)) { - clear_bit(BIO_CHAIN, &bio->bi_flags); + bio_clear_flag(bio, BIO_CHAIN); return true; } @@ -1866,7 +1866,7 @@ void bio_trim(struct bio *bio, int offset, int size) if (offset == 0 && size == bio->bi_iter.bi_size) return; - clear_bit(BIO_SEG_VALID, &bio->bi_flags); + bio_clear_flag(bio, BIO_SEG_VALID); bio_advance(bio, offset << 9); |