From 8a021c2fe1db1b3a376a563d0156e9488d9f5aff Mon Sep 17 00:00:00 2001 From: LuK1337 Date: Fri, 27 Oct 2023 18:44:20 +0200 Subject: writeback: Fix cgroup_path() return value check cgroup_path() returns length, not char *. Change-Id: I8bdfcc0fc58789aa23f730866f27fbb932b24be1 --- include/trace/events/writeback.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/trace/events/writeback.h b/include/trace/events/writeback.h index d01217407d6d..6d9443d45fa2 100644 --- a/include/trace/events/writeback.h +++ b/include/trace/events/writeback.h @@ -142,10 +142,10 @@ static inline size_t __trace_wb_cgroup_size(struct bdi_writeback *wb) static inline void __trace_wb_assign_cgroup(char *buf, struct bdi_writeback *wb) { struct cgroup *cgrp = wb->memcg_css->cgroup; - char *path; + int len; - path = cgroup_path(cgrp, buf, kernfs_path_len(cgrp->kn) + 1); - WARN_ON_ONCE(path != buf); + len = cgroup_path(cgrp, buf, kernfs_path_len(cgrp->kn) + 1); + WARN_ON_ONCE(len < 0); } static inline size_t __trace_wbc_cgroup_size(struct writeback_control *wbc) -- cgit v1.2.3