diff options
| -rw-r--r-- | drivers/staging/erofs/internal.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/staging/erofs/internal.h b/drivers/staging/erofs/internal.h index 399a7003e783..892944355867 100644 --- a/drivers/staging/erofs/internal.h +++ b/drivers/staging/erofs/internal.h @@ -209,6 +209,11 @@ static inline bool erofs_workgroup_try_to_freeze(struct erofs_workgroup *grp, static inline void erofs_workgroup_unfreeze(struct erofs_workgroup *grp, int orig_val) { + /* + * other observers should notice all modifications + * in the freezing period. + */ + smp_mb(); atomic_set(&grp->refcount, orig_val); preempt_enable(); } |