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| author | Alex Elder <elder@inktank.com> | 2012-10-10 21:19:13 -0700 |
|---|---|---|
| committer | Alex Elder <elder@inktank.com> | 2012-10-26 17:18:08 -0500 |
| commit | a0ea3a40fd20b8c66381f747c454f89d6d1f50d4 (patch) | |
| tree | 044dcaf850e2adf158deeea3a8091cba6a5a2e10 /drivers/block | |
| parent | b213e0b1a62637b2a9395a34349b13d73ca2b90a (diff) | |
| download | linux-a0ea3a40fd20b8c66381f747c454f89d6d1f50d4.tar.gz linux-a0ea3a40fd20b8c66381f747c454f89d6d1f50d4.tar.bz2 linux-a0ea3a40fd20b8c66381f747c454f89d6d1f50d4.zip | |
rbd: zero return code in rbd_dev_image_id()
When rbd_dev_probe() calls rbd_dev_image_id() it expects to get
a 0 return code if successful, but it is getting a positive value.
The reason is that rbd_dev_image_id() returns the value it gets from
rbd_req_sync_exec(), which returns the number of bytes read in as a
result of the request. (This ultimately comes from
ceph_copy_from_page_vector() in rbd_req_sync_op()).
Force the return value to 0 when successful in rbd_dev_image_id().
Do the same in rbd_dev_v2_object_prefix().
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
Reviewed-by: Dan Mick <dan.mick@inktank.com>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/rbd.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 4a16464ad5bb..94d613208c4f 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -2207,6 +2207,7 @@ static int rbd_dev_v2_object_prefix(struct rbd_device *rbd_dev) dout("%s: rbd_req_sync_exec returned %d\n", __func__, ret); if (ret < 0) goto out; + ret = 0; /* rbd_req_sync_exec() can return positive */ p = reply_buf; rbd_dev->header.object_prefix = ceph_extract_encoded_string(&p, @@ -2900,6 +2901,7 @@ static int rbd_dev_image_id(struct rbd_device *rbd_dev) dout("%s: rbd_req_sync_exec returned %d\n", __func__, ret); if (ret < 0) goto out; + ret = 0; /* rbd_req_sync_exec() can return positive */ p = response; rbd_dev->image_id = ceph_extract_encoded_string(&p, |