Reviewed-by: Dan Mick <dan.mick@xxxxxxxxxxx>
On 10/22/2012 09:51 AM, Alex Elder wrote:
The rbd_device structure has an embedded rbd_options structure.
Such a structure is needed to work with the generic ceph argument
parsing code, but there's no need to keep it around once argument
parsing is done.
Use a local variable to hold the rbd options used in parsing in
rbd_get_client(), and just transfer its content (it's just a
read_only flag) into the field in the rbd_mapping sub-structure
that requires that information.
Signed-off-by: Alex Elder <elder@xxxxxxxxxxx>
---
drivers/block/rbd.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 4ccce4d..3c131ab 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -184,7 +184,6 @@ struct rbd_device {
struct gendisk *disk; /* blkdev's gendisk and rq */
u32 image_format; /* Either 1 or 2 */
- struct rbd_options rbd_opts;
struct rbd_client *rbd_client;
char name[DEV_NAME_LEN]; /* blkdev name, e.g. rbd3 */
@@ -456,18 +455,24 @@ static int parse_rbd_opts_token(char *c, void
*private)
static int rbd_get_client(struct rbd_device *rbd_dev, const char *mon_addr,
size_t mon_addr_len, char *options)
{
- struct rbd_options *rbd_opts = &rbd_dev->rbd_opts;
+ struct rbd_options rbd_opts;
struct ceph_options *ceph_opts;
struct rbd_client *rbdc;
- rbd_opts->read_only = RBD_READ_ONLY_DEFAULT;
+ /* Initialize all rbd options to the defaults */
+
+ rbd_opts.read_only = RBD_READ_ONLY_DEFAULT;
ceph_opts = ceph_parse_options(options, mon_addr,
mon_addr + mon_addr_len,
- parse_rbd_opts_token, rbd_opts);
+ parse_rbd_opts_token, &rbd_opts);
if (IS_ERR(ceph_opts))
return PTR_ERR(ceph_opts);
+ /* Record the parsed rbd options */
+
+ rbd_dev->mapping.read_only = rbd_opts.read_only;
+
rbdc = rbd_client_find(ceph_opts);
if (rbdc) {
/* using an existing client */
@@ -685,7 +690,6 @@ static int rbd_dev_set_mapping(struct rbd_device
*rbd_dev, char *snap_name)
rbd_dev->mapping.size = rbd_dev->header.image_size;
rbd_dev->mapping.features = rbd_dev->header.features;
rbd_dev->mapping.snap_exists = false;
- rbd_dev->mapping.read_only = rbd_dev->rbd_opts.read_only;
ret = 0;
} else {
ret = snap_by_name(rbd_dev, snap_name);
--
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