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Go Back   Linux Archive > Redhat > Device-mapper Development

 
 
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Old 07-23-2010, 11:23 PM
Mike Snitzer
 
Default dm zero: silently drop discards too

Have the zero target silently drop a discard rather than fail the
request with -EOPNOTSUPP.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
---
drivers/md/dm-zero.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/md/dm-zero.c b/drivers/md/dm-zero.c
index bbc9703..8bd76e0 100644
--- a/drivers/md/dm-zero.c
+++ b/drivers/md/dm-zero.c
@@ -22,6 +22,9 @@ static int zero_ctr(struct dm_target *ti, unsigned int argc, char **argv)
return -EINVAL;
}

+ /* silently drop discards (this avoids -EOPNOTSUPP) */
+ ti->num_discard_requests = 1;
+
return 0;
}

--
1.6.6.1

--
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Old 07-24-2010, 04:09 PM
Mike Snitzer
 
Default dm zero: silently drop discards too

Have the zero target silently drop a discard rather than fail the
request with -EOPNOTSUPP.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
---
drivers/md/dm-zero.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/md/dm-zero.c b/drivers/md/dm-zero.c
index bbc9703..8bd76e0 100644
--- a/drivers/md/dm-zero.c
+++ b/drivers/md/dm-zero.c
@@ -22,6 +22,9 @@ static int zero_ctr(struct dm_target *ti, unsigned int argc, char **argv)
return -EINVAL;
}

+ /* silently drop discards (this avoids -EOPNOTSUPP) */
+ ti->num_discard_requests = 1;
+
return 0;
}

--
1.6.6.1

--
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https://www.redhat.com/mailman/listinfo/dm-devel
 

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