dm ioctl: suppress needless warning messages

The device-mapper should not send warning messages to syslog
if a device is not found. This can be done by userspace
according to the returned dm-ioctl error code.

So move these messages to debug level and use rate limiting
to not flood syslog.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index f3481d922206127f646ccfc6a3423530cc046774..6d12775a1061059e483fdbeab3bf7b6ccbe53011 100644 (file)
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -779,7 +779,7 @@ static int dev_remove(struct dm_ioctl *param, size_t param_size)
        hc = __find_device_hash_cell(param);
 
        if (!hc) {
-               DMWARN("device doesn't appear to be in the dev hash table.");
+               DMDEBUG_LIMIT("device doesn't appear to be in the dev hash table.");
                up_write(&_hash_lock);
                return -ENXIO;
        }
@@ -791,7 +791,7 @@ static int dev_remove(struct dm_ioctl *param, size_t param_size)
         */
        r = dm_lock_for_deletion(md);
        if (r) {
-               DMWARN("unable to remove open device %s", hc->name);
+               DMDEBUG_LIMIT("unable to remove open device %s", hc->name);
                up_write(&_hash_lock);
                dm_put(md);
                return r;
@@ -938,7 +938,7 @@ static int do_resume(struct dm_ioctl *param)
 
        hc = __find_device_hash_cell(param);
        if (!hc) {
-               DMWARN("device doesn't appear to be in the dev hash table.");
+               DMDEBUG_LIMIT("device doesn't appear to be in the dev hash table.");
                up_write(&_hash_lock);
                return -ENXIO;
        }
@@ -1265,7 +1265,7 @@ static int table_clear(struct dm_ioctl *param, size_t param_size)
 
        hc = __find_device_hash_cell(param);
        if (!hc) {
-               DMWARN("device doesn't appear to be in the dev hash table.");
+               DMDEBUG_LIMIT("device doesn't appear to be in the dev hash table.");
                up_write(&_hash_lock);
                return -ENXIO;
        }