X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Finclude%2Flustre_log.h;h=1fdca737156963a3086c8bc60cabe05fec0d7543;hp=360ba26dd52c822280901dbf03e402f0129e3cef;hb=aa22a6826ee521ab14994a4533b0dbffb529aab0;hpb=e7ce67de92dea68707c96ef44918ebdaacd6533b

diff --git a/lustre/include/lustre_log.h b/lustre/include/lustre_log.h
index 360ba26..1fdca73 100644
--- a/lustre/include/lustre_log.h
+++ b/lustre/include/lustre_log.h
@@ -340,6 +340,7 @@ struct llog_ctxt {
 #define LLOG_PROC_BREAK 0x0001
 #define LLOG_DEL_RECORD 0x0002
 #define LLOG_DEL_PLAIN  0x0003
+#define LLOG_SKIP_PLAIN 0x0004
 
 static inline int llog_obd2ops(struct llog_ctxt *ctxt,
 			       const struct llog_operations **lop)
@@ -519,6 +520,22 @@ static inline int llog_is_full(struct llog_handle *llh)
 	return llh->lgh_last_idx >= LLOG_HDR_BITMAP_SIZE(llh->lgh_hdr) - 1;
 }
 
+/* Determine if a llog plain of a catalog could be skiped based on record
+ * custom indexes.
+ * This assumes that indexes follow each other. The number of records to skip
+ * can be computed base on a starting offset and the index of the current
+ * record (in llog catalog callback).
+ */
+static inline int llog_is_plain_skipable(struct llog_log_hdr *lh,
+					 struct llog_rec_hdr *rec,
+					 __u64 curr, __u64 start)
+{
+	if (start == 0 || curr >= start)
+		return 0;
+
+	return (LLOG_HDR_BITMAP_SIZE(lh) - rec->lrh_index) < (start - curr);
+}
+
 struct llog_cfg_rec {
 	struct llog_rec_hdr	lcr_hdr;
 	struct lustre_cfg	lcr_cfg;