diff options
Diffstat (limited to 'drivers/md/dm-bio-prison.h')
| -rw-r--r-- | drivers/md/dm-bio-prison.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/md/dm-bio-prison.h b/drivers/md/dm-bio-prison.h index 981a02d3a055..3f833190eadf 100644 --- a/drivers/md/dm-bio-prison.h +++ b/drivers/md/dm-bio-prison.h @@ -57,6 +57,17 @@ void dm_bio_prison_free_cell(struct dm_bio_prison *prison, struct dm_bio_prison_cell *cell); /* + * Creates, or retrieves a cell for the given key. + * + * Returns 1 if pre-existing cell returned, zero if new cell created using + * @cell_prealloc. + */ +int dm_get_cell(struct dm_bio_prison *prison, + struct dm_cell_key *key, + struct dm_bio_prison_cell *cell_prealloc, + struct dm_bio_prison_cell **cell_result); + +/* * An atomic op that combines retrieving a cell, and adding a bio to it. * * Returns 1 if the cell was already held, 0 if @inmate is the new holder. |