diff options
Diffstat (limited to 'drivers/md/dm-core.h')
| -rw-r--r-- | drivers/md/dm-core.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/md/dm-core.h b/drivers/md/dm-core.h index 688aeba248d7..8ef780a6baae 100644 --- a/drivers/md/dm-core.h +++ b/drivers/md/dm-core.h @@ -22,6 +22,8 @@ #define DM_RESERVED_MAX_IOS 1024 +struct dm_io; + struct dm_kobject_holder { struct kobject kobj; struct completion completion; @@ -91,6 +93,14 @@ struct mapped_device { spinlock_t deferred_lock; struct bio_list deferred; + /* + * requeue work context is needed for cloning one new bio + * to represent the dm_io to be requeued, since each + * dm_io may point to the original bio from FS. + */ + struct work_struct requeue_work; + struct dm_io *requeue_list; + void *interface_ptr; /* @@ -275,7 +285,6 @@ struct dm_io { atomic_t io_count; struct mapped_device *md; - struct bio *split_bio; /* The three fields represent mapped part of original bio */ struct bio *orig_bio; unsigned int sector_offset; /* offset to end of orig_bio */ @@ -303,6 +312,8 @@ static inline void dm_io_set_flag(struct dm_io *io, unsigned int bit) io->flags |= (1U << bit); } +void dm_io_rewind(struct dm_io *io, struct bio_set *bs); + static inline struct completion *dm_get_completion_from_kobject(struct kobject *kobj) { return &container_of(kobj, struct dm_kobject_holder, kobj)->completion; @@ -319,6 +330,4 @@ extern atomic_t dm_global_event_nr; extern wait_queue_head_t dm_global_eventq; void dm_issue_global_event(void); -void dm_bio_rewind(struct bio *bio, unsigned bytes); - #endif |