static inline struct blkcg *task_blkcg(struct task_struct *tsk)
{
- return css_to_blkcg(task_css(tsk, blkio_subsys_id));
+ return css_to_blkcg(task_css(tsk, blkio_cgrp_id));
}
static inline struct blkcg *bio_blkcg(struct bio *bio)
*/
static inline int blkg_path(struct blkcg_gq *blkg, char *buf, int buflen)
{
- int ret;
+ char *p;
- ret = cgroup_path(blkg->blkcg->css.cgroup, buf, buflen);
- if (ret)
+ p = cgroup_path(blkg->blkcg->css.cgroup, buf, buflen);
+ if (!p) {
strncpy(buf, "<unavailable>", buflen);
- return ret;
+ return -ENAMETOOLONG;
+ }
+
+ memmove(buf, p, buf + buflen - p);
+ return 0;
}
/**
uint64_t v;
do {
- start = u64_stats_fetch_begin_bh(&stat->syncp);
+ start = u64_stats_fetch_begin_irq(&stat->syncp);
v = stat->cnt;
- } while (u64_stats_fetch_retry_bh(&stat->syncp, start));
+ } while (u64_stats_fetch_retry_irq(&stat->syncp, start));
return v;
}
struct blkg_rwstat tmp;
do {
- start = u64_stats_fetch_begin_bh(&rwstat->syncp);
+ start = u64_stats_fetch_begin_irq(&rwstat->syncp);
tmp = *rwstat;
- } while (u64_stats_fetch_retry_bh(&rwstat->syncp, start));
+ } while (u64_stats_fetch_retry_irq(&rwstat->syncp, start));
return tmp;
}