diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-03 10:02:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-03 10:02:45 -0700 |
| commit | d9b9be024a6628a01d8730d1fd0b5f25658a2794 (patch) | |
| tree | 9f8e606f975f6dff4213747e85fedaccd148eb60 /drivers/md/dm-bio-record.h | |
| parent | 9b59f0316bc556a1b63518f0b1224cf9be48467b (diff) | |
| parent | 99360b4c18f7675b50d283301d46d755affe75fd (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm
* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm: (36 commits)
dm: set queue ordered mode
dm: move wait queue declaration
dm: merge pushback and deferred bio lists
dm: allow uninterruptible wait for pending io
dm: merge __flush_deferred_io into caller
dm: move bio_io_error into __split_and_process_bio
dm: rename __split_bio
dm: remove unnecessary struct dm_wq_req
dm: remove unnecessary work queue context field
dm: remove unnecessary work queue type field
dm: bio list add bio_list_add_head
dm snapshot: persistent fix dtr cleanup
dm snapshot: move status to exception store
dm snapshot: move ctr parsing to exception store
dm snapshot: use DMEMIT macro for status
dm snapshot: remove dm_snap header
dm snapshot: remove dm_snap header use
dm exception store: move cow pointer
dm exception store: move chunk_fields
dm exception store: move dm_target pointer
...
Diffstat (limited to 'drivers/md/dm-bio-record.h')
| -rw-r--r-- | drivers/md/dm-bio-record.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/md/dm-bio-record.h b/drivers/md/dm-bio-record.h index d3ec217847d..3a8cfa2645c 100644 --- a/drivers/md/dm-bio-record.h +++ b/drivers/md/dm-bio-record.h @@ -16,30 +16,56 @@ * functions in this file help the target record and restore the * original bio state. */ + +struct dm_bio_vec_details { +#if PAGE_SIZE < 65536 + __u16 bv_len; + __u16 bv_offset; +#else + unsigned bv_len; + unsigned bv_offset; +#endif +}; + struct dm_bio_details { sector_t bi_sector; struct block_device *bi_bdev; unsigned int bi_size; unsigned short bi_idx; unsigned long bi_flags; + struct dm_bio_vec_details bi_io_vec[BIO_MAX_PAGES]; }; static inline void dm_bio_record(struct dm_bio_details *bd, struct bio *bio) { + unsigned i; + bd->bi_sector = bio->bi_sector; bd->bi_bdev = bio->bi_bdev; bd->bi_size = bio->bi_size; bd->bi_idx = bio->bi_idx; bd->bi_flags = bio->bi_flags; + + for (i = 0; i < bio->bi_vcnt; i++) { + bd->bi_io_vec[i].bv_len = bio->bi_io_vec[i].bv_len; + bd->bi_io_vec[i].bv_offset = bio->bi_io_vec[i].bv_offset; + } } static inline void dm_bio_restore(struct dm_bio_details *bd, struct bio *bio) { + unsigned i; + bio->bi_sector = bd->bi_sector; bio->bi_bdev = bd->bi_bdev; bio->bi_size = bd->bi_size; bio->bi_idx = bd->bi_idx; bio->bi_flags = bd->bi_flags; + + for (i = 0; i < bio->bi_vcnt; i++) { + bio->bi_io_vec[i].bv_len = bd->bi_io_vec[i].bv_len; + bio->bi_io_vec[i].bv_offset = bd->bi_io_vec[i].bv_offset; + } } #endif |