diff options
| author | Mike Snitzer <snitzer@redhat.com> | 2010-08-12 04:14:12 +0100 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2010-08-12 04:14:12 +0100 |
| commit | f8facb61b5095488a4d78fa78116ef4f4b82bc4d (patch) | |
| tree | 5ee747721c27a8ac1cb68bb05862bfdfea185d9b /drivers/md/dm-zero.c | |
| parent | b441a262e7d1c56fbe21794c91d7a9c83809113f (diff) | |
| download | lwn-f8facb61b5095488a4d78fa78116ef4f4b82bc4d.tar.gz lwn-f8facb61b5095488a4d78fa78116ef4f4b82bc4d.zip | |
dm: zero silently drop discards
Have the zero target silently drop a discard rather than fail the
request with -EOPNOTSUPP.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-zero.c')
| -rw-r--r-- | drivers/md/dm-zero.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/md/dm-zero.c b/drivers/md/dm-zero.c index bbc97030c0c2..cc2b3cb81946 100644 --- a/drivers/md/dm-zero.c +++ b/drivers/md/dm-zero.c @@ -22,6 +22,11 @@ static int zero_ctr(struct dm_target *ti, unsigned int argc, char **argv) return -EINVAL; } + /* + * Silently drop discards, avoiding -EOPNOTSUPP. + */ + ti->num_discard_requests = 1; + return 0; } |