Make the names and image id in an rbd_spec be pointers to constant
data. This required the use of a local variable to hold the
snapshot name in rbd_add_parse_args() to avoid a warning.
Signed-off-by: Alex Elder <elder@xxxxxxxxxxx>
---
drivers/block/rbd.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index cacbc30..d989914 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -138,13 +138,13 @@ struct rbd_image_header {
*/
struct rbd_spec {
u64 pool_id;
- char *pool_name;
+ const char *pool_name;
- char *image_id;
- char *image_name;
+ const char *image_id;
+ const char *image_name;
u64 snap_id;
- char *snap_name;
+ const char *snap_name;
struct kref kref;
};
@@ -4375,6 +4375,7 @@ static int rbd_add_parse_args(const char *buf,
size_t len;
char *options;
const char *mon_addrs;
+ char *snap_name;
size_t mon_addrs_size;
struct rbd_spec *spec = NULL;
struct rbd_options *rbd_opts = NULL;
@@ -4433,10 +4434,11 @@ static int rbd_add_parse_args(const char *buf,
ret = -ENAMETOOLONG;
goto out_err;
}
- spec->snap_name = kmemdup(buf, len + 1, GFP_KERNEL);
- if (!spec->snap_name)
+ snap_name = kmemdup(buf, len + 1, GFP_KERNEL);
+ if (!snap_name)
goto out_mem;
- *(spec->snap_name + len) = '\0';
+ *(snap_name + len) = '\0';
+ spec->snap_name = snap_name;
/* Initialize all rbd options to the defaults */
--
1.7.9.5
--
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