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| author | Jonathan Brassow <jbrassow@redhat.com> | 2009-04-02 20:55:33 +0200 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2009-04-02 20:55:33 +0200 |
| commit | 71fab00a6bef7fb53119271a8abdbaf40970d28a (patch) | |
| tree | 4881f8f6d1b1c42528889d7a56fb8674d2aa7723 /drivers/md/dm-exception-store.h | |
| parent | dm exception store: move cow pointer (diff) | |
| download | linux-71fab00a6bef7fb53119271a8abdbaf40970d28a.tar.xz linux-71fab00a6bef7fb53119271a8abdbaf40970d28a.zip | |
dm snapshot: remove dm_snap header use
Move useful functions out of dm-snap.h and stop using dm-snap.h.
Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-exception-store.h')
| -rw-r--r-- | drivers/md/dm-exception-store.h | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/md/dm-exception-store.h b/drivers/md/dm-exception-store.h index 4dbf3577408e..835f402d9470 100644 --- a/drivers/md/dm-exception-store.h +++ b/drivers/md/dm-exception-store.h @@ -97,8 +97,6 @@ struct dm_exception_store { struct dm_exception_store_type *type; struct dm_target *ti; - struct dm_snapshot *snap; - struct dm_dev *cow; /* Size of data blocks saved - must be a power of 2 */ @@ -152,6 +150,20 @@ static inline void dm_consecutive_chunk_count_inc(struct dm_snap_exception *e) # endif +/* + * Return the number of sectors in the device. + */ +static inline sector_t get_dev_size(struct block_device *bdev) +{ + return bdev->bd_inode->i_size >> SECTOR_SHIFT; +} + +static inline chunk_t sector_to_chunk(struct dm_exception_store *store, + sector_t sector) +{ + return (sector & ~store->chunk_mask) >> store->chunk_shift; +} + int dm_exception_store_type_register(struct dm_exception_store_type *type); int dm_exception_store_type_unregister(struct dm_exception_store_type *type); |