diff options
Diffstat (limited to 'include/linux/device-mapper.h')
-rw-r--r-- | include/linux/device-mapper.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 3fa1f3d90ce0..99e3e50b5c57 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h | |||
@@ -197,6 +197,11 @@ struct dm_target { | |||
197 | * whether or not its underlying devices have support. | 197 | * whether or not its underlying devices have support. |
198 | */ | 198 | */ |
199 | unsigned discards_supported:1; | 199 | unsigned discards_supported:1; |
200 | |||
201 | /* | ||
202 | * Set if this target does not return zeroes on discarded blocks. | ||
203 | */ | ||
204 | unsigned discard_zeroes_data_unsupported:1; | ||
200 | }; | 205 | }; |
201 | 206 | ||
202 | /* Each target can link one of these into the table */ | 207 | /* Each target can link one of these into the table */ |