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| author | Mike Snitzer <snitzer@redhat.com> | 2011-05-29 12:52:55 +0100 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2011-05-29 12:52:55 +0100 |
| commit | 4c2593270133708698d4b8cea2dab469479ad13b (patch) | |
| tree | f408edef9145b2f9553cbb2142347fc79023c4ff /include/linux/device-mapper.h | |
| parent | 139f37f5e14cd883eee2a8a36289f544b5390a44 (diff) | |
| download | kernel_samsung_espresso10-4c2593270133708698d4b8cea2dab469479ad13b.zip kernel_samsung_espresso10-4c2593270133708698d4b8cea2dab469479ad13b.tar.gz kernel_samsung_espresso10-4c2593270133708698d4b8cea2dab469479ad13b.tar.bz2 | |
dm table: allow targets to support discards internally
Permit a target to support discards regardless of whether or not all its
underlying devices do.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'include/linux/device-mapper.h')
| -rw-r--r-- | include/linux/device-mapper.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 32a4423..4427e04 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -191,6 +191,12 @@ struct dm_target { /* Used to provide an error string from the ctr */ char *error; + + /* + * Set if this target needs to receive discards regardless of + * whether or not its underlying devices have support. + */ + unsigned discards_supported:1; }; /* Each target can link one of these into the table */ |