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authorAlex Elder <elder@inktank.com>2013-05-06 07:40:30 -0500
committerAlex Elder <elder@inktank.com>2013-05-08 07:48:11 -0500
commit8f4b7d9821715767ac28bbc2d401bbb5f3f9a448 (patch)
tree9486cd94a485ae65f9d30e2ea530033f618c48b8 /drivers/block/rbd.c
parentc734b79655a91a24afcae73738a43a0db09a801a (diff)
rbd: don't look up snapshot id in rbd_dev_mapping_set()
Currently rbd_dev_mapping_set() looks up the snapshot id for the snapshot whose name is found in the rbd device's spec structure. That function gets called by rbd_dev_device_setup(), which is called by rbd_add() *after* rbd_dev_image_probe(). If the image probe succeeds, the rbd device's spec will already have been updated to include names and ids for all fields. Therefore there's no need to look up the snapshot id in rbd_dev_mapping_set(). Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
Diffstat (limited to 'drivers/block/rbd.c')
-rw-r--r--drivers/block/rbd.c11
1 files changed, 1 insertions, 10 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 2d34aea772b..75a8cea1a2d 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -936,20 +936,11 @@ static int rbd_snap_features(struct rbd_device *rbd_dev, u64 snap_id,
static int rbd_dev_mapping_set(struct rbd_device *rbd_dev)
{
- const char *snap_name = rbd_dev->spec->snap_name;
- u64 snap_id;
+ u64 snap_id = rbd_dev->spec->snap_id;
u64 size = 0;
u64 features = 0;
int ret;
- if (strcmp(snap_name, RBD_SNAP_HEAD_NAME)) {
- snap_id = rbd_snap_id_by_name(rbd_dev, snap_name);
- if (snap_id == CEPH_NOSNAP)
- return -ENOENT;
- } else {
- snap_id = CEPH_NOSNAP;
- }
-
ret = rbd_snap_size(rbd_dev, snap_id, &size);
if (ret)
return ret;