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| author | Kent Overstreet <koverstreet@google.com> | 2012-09-28 13:17:55 -0700 |
|---|---|---|
| committer | Kent Overstreet <koverstreet@google.com> | 2013-03-23 14:15:27 -0700 |
| commit | 054bdf646e36c2f7dc1bf6bc6209dbbb5909164b (patch) | |
| tree | acd9989fd9e6f5c6d3c985e34e984081a33cbdc3 /include | |
| parent | 9f060e2231ca96ca94f2ffcff730acd72606b280 (diff) | |
| download | linux-054bdf646e36c2f7dc1bf6bc6209dbbb5909164b.tar.gz linux-054bdf646e36c2f7dc1bf6bc6209dbbb5909164b.tar.xz | |
block: Add bio_advance()
This is prep work for immutable bio vecs; we first want to centralize
where bvecs are modified.
Next two patches convert some existing code to use this function.
Signed-off-by: Kent Overstreet <koverstreet@google.com>
CC: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/bio.h | 2 | ||||
| -rw-r--r-- | include/linux/blk_types.h | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h index 669b1cb18fee..fcb4dba2d8ea 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -248,6 +248,8 @@ extern void bio_endio(struct bio *, int); struct request_queue; extern int bio_phys_segments(struct request_queue *, struct bio *); +extern void bio_advance(struct bio *, unsigned); + extern void bio_init(struct bio *); extern void bio_reset(struct bio *); diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index cdf11191e645..c178d25e588b 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -197,6 +197,8 @@ enum rq_flag_bits { REQ_SECURE) #define REQ_CLONE_MASK REQ_COMMON_MASK +#define BIO_NO_ADVANCE_ITER_MASK (REQ_DISCARD|REQ_WRITE_SAME) + /* This mask is used for both bio and request merge checking */ #define REQ_NOMERGE_FLAGS \ (REQ_NOMERGE | REQ_STARTED | REQ_SOFTBARRIER | REQ_FLUSH | REQ_FUA) |