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authorAlex Elder <elder@inktank.com>2013-05-06 17:40:33 -0500
committerAlex Elder <elder@inktank.com>2013-05-08 20:16:50 -0500
commit7ce4eef7b5fad73b365b7e4b8892af3af72d4bd3 (patch)
treecde113dd54f09cac813475c111be21e3500f4252 /drivers/block
parent5b2ab72d367d2682c1a237448fbc1595881a88fa (diff)
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rbd: set mapping read-only flag in rbd_add()
The rbd_dev->mapping field for a parent image is not meaningful. Since rbd_image_probe() is used both for images being mapped and their parents, it doesn't make sense to set that flag in that function. So move the setting of the mapping.read_only flag out of rbd_dev_image_probe() and into rbd_add() instead. This resolves: http://tracker.ceph.com/issues/4940 Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/rbd.c23
1 files changed, 11 insertions, 12 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 2a0e9b81be48..dbfc44a9defd 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -358,7 +358,7 @@ static ssize_t rbd_add(struct bus_type *bus, const char *buf,
size_t count);
static ssize_t rbd_remove(struct bus_type *bus, const char *buf,
size_t count);
-static int rbd_dev_image_probe(struct rbd_device *rbd_dev, bool read_only);
+static int rbd_dev_image_probe(struct rbd_device *rbd_dev);
static struct bus_attribute rbd_bus_attrs[] = {
__ATTR(add, S_IWUSR, NULL, rbd_add),
@@ -4549,7 +4549,7 @@ static int rbd_dev_probe_parent(struct rbd_device *rbd_dev)
if (!parent)
goto out_err;
- ret = rbd_dev_image_probe(parent, true);
+ ret = rbd_dev_image_probe(parent);
if (ret < 0)
goto out_err;
rbd_dev->parent = parent;
@@ -4671,10 +4671,9 @@ static void rbd_dev_image_release(struct rbd_device *rbd_dev)
/*
* Probe for the existence of the header object for the given rbd
- * device. For format 2 images this includes determining the image
- * id.
+ * device.
*/
-static int rbd_dev_image_probe(struct rbd_device *rbd_dev, bool read_only)
+static int rbd_dev_image_probe(struct rbd_device *rbd_dev)
{
int ret;
int tmp;
@@ -4709,12 +4708,6 @@ static int rbd_dev_image_probe(struct rbd_device *rbd_dev, bool read_only)
if (ret)
goto err_out_probe;
- /* If we are mapping a snapshot it must be marked read-only */
-
- if (rbd_dev->spec->snap_id != CEPH_NOSNAP)
- read_only = true;
- rbd_dev->mapping.read_only = read_only;
-
ret = rbd_dev_probe_parent(rbd_dev);
if (ret)
goto err_out_probe;
@@ -4795,10 +4788,16 @@ static ssize_t rbd_add(struct bus_type *bus,
rbdc = NULL; /* rbd_dev now owns this */
spec = NULL; /* rbd_dev now owns this */
- rc = rbd_dev_image_probe(rbd_dev, read_only);
+ rc = rbd_dev_image_probe(rbd_dev);
if (rc < 0)
goto err_out_rbd_dev;
+ /* If we are mapping a snapshot it must be marked read-only */
+
+ if (rbd_dev->spec->snap_id != CEPH_NOSNAP)
+ read_only = true;
+ rbd_dev->mapping.read_only = read_only;
+
rc = rbd_dev_device_setup(rbd_dev);
if (!rc)
return count;