LU-14699 mdd: proactive changelog garbage collection

[fs/lustre-release.git] / lustre / mdd / mdd_internal.h

diff --git a/lustre/mdd/mdd_internal.h b/lustre/mdd/mdd_internal.h
index 3ed6472..1986d27 100644 (file)
--- a/lustre/mdd/mdd_internal.h
+++ b/lustre/mdd/mdd_internal.h
@@ -97,6 +97,8 @@ struct mdd_changelog {
        int                     mc_flags;
        __u32                   mc_proc_mask; /* per-server mask set via parameters */
        __u32                   mc_current_mask; /* combined global+users */
+       __u32                   mc_mintime; /* the oldest changelog user time */
+       __u64                   mc_minrec; /* last known minimal used index */
        __u64                   mc_index;
        ktime_t                 mc_starttime;
        spinlock_t              mc_user_lock;
@@ -851,4 +853,15 @@ static inline bool mdd_changelog_enabled(const struct lu_env *env,
        }
 }
 
+static inline bool mdd_changelog_is_too_idle(struct mdd_device *mdd,
+                                            __u64 cl_rec, __u32 cl_time)
+{
+       __u64 idle_indexes = mdd->mdd_cl.mc_index - cl_rec;
+       __u32 idle_time = (__u32)ktime_get_real_seconds() - cl_time;
+
+       return (idle_indexes > mdd->mdd_changelog_max_idle_indexes ||
+               idle_time > mdd->mdd_changelog_max_idle_time ||
+               idle_time * idle_indexes > (24 * 3600ULL << 32));
+}
+
 #endif