From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Snitzer Subject: [PATCH v2 07/12] dm zero: silently drop discards too Date: Sat, 24 Jul 2010 12:09:23 -0400 Message-ID: <1279987768-13275-8-git-send-email-snitzer@redhat.com> References: <1279987768-13275-1-git-send-email-snitzer@redhat.com> Reply-To: device-mapper development Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1279987768-13275-1-git-send-email-snitzer@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: dm-devel@redhat.com List-Id: dm-devel.ids Have the zero target silently drop a discard rather than fail the request with -EOPNOTSUPP. Signed-off-by: Mike Snitzer --- 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