blkcg: remove blkio_group->path[]

[mirror_ubuntu-artful-kernel.git] / block / blk-throttle.c

diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index e2aaf27e1f106c950bc8d697cef55037db997469..e9b7a47f6da02d230d9f1b144c753d3f80d1d720 100644 (file)
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -155,9 +155,12 @@ static inline int throtl_tg_##name(const struct throtl_grp *tg)            \
 
 THROTL_TG_FNS(on_rr);
 
-#define throtl_log_tg(td, tg, fmt, args...)                            \
-       blk_add_trace_msg((td)->queue, "throtl %s " fmt,                \
-                         blkg_path(tg_to_blkg(tg)), ##args);           \
+#define throtl_log_tg(td, tg, fmt, args...)    do {                    \
+       char __pbuf[128];                                               \
+                                                                       \
+       blkg_path(tg_to_blkg(tg), __pbuf, sizeof(__pbuf));              \
+       blk_add_trace_msg((td)->queue, "throtl %s " fmt, __pbuf, ##args); \
+} while (0)
 
 #define throtl_log(td, fmt, args...)   \
        blk_add_trace_msg((td)->queue, "throtl " fmt, ##args)