diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/device-mapper.h | 9 | ||||
| -rw-r--r-- | include/linux/dm-ioctl.h | 4 |
2 files changed, 9 insertions, 4 deletions
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index d70cbb2ada25..b19c1e189a68 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -186,8 +186,8 @@ struct dm_target { sector_t begin; sector_t len; - /* Always a power of 2 */ - sector_t split_io; + /* If non-zero, maximum size of I/O submitted to a target. */ + uint32_t max_io_len; /* * A number of zero-length barrier requests that will be submitted @@ -358,6 +358,11 @@ void dm_table_add_target_callbacks(struct dm_table *t, struct dm_target_callback int dm_table_complete(struct dm_table *t); /* + * Target may require that it is never sent I/O larger than len. + */ +int __must_check dm_set_target_max_io_len(struct dm_target *ti, sector_t len); + +/* * Table reference counting. */ struct dm_table *dm_get_live_table(struct mapped_device *md); diff --git a/include/linux/dm-ioctl.h b/include/linux/dm-ioctl.h index 75fd5573516e..3ece4eee84cb 100644 --- a/include/linux/dm-ioctl.h +++ b/include/linux/dm-ioctl.h @@ -268,8 +268,8 @@ enum { #define DM_VERSION_MAJOR 4 #define DM_VERSION_MINOR 22 -#define DM_VERSION_PATCHLEVEL 0 -#define DM_VERSION_EXTRA "-ioctl (2011-10-19)" +#define DM_VERSION_PATCHLEVEL 1 +#define DM_VERSION_EXTRA "-ioctl (2012-06-01)" /* Status bits */ #define DM_READONLY_FLAG (1 << 0) /* In/Out */ |