diff --git a/doc/src/sgml/ref/vacuum.sgml b/doc/src/sgml/ref/vacuum.sgml
index 450c94f..5755753 100644
--- a/doc/src/sgml/ref/vacuum.sgml
+++ b/doc/src/sgml/ref/vacuum.sgml
@@ -252,6 +252,7 @@ DETAIL:  CPU 0.01s/0.06u sec elapsed 0.07 sec.
 INFO:  "onek": found 3000 removable, 1000 nonremovable tuples in 143 pages
 DETAIL:  0 dead tuples cannot be removed yet.
 There were 0 unused item pointers.
+0 pages were pinned.
 0 pages are entirely empty.
 CPU 0.07s/0.39u sec elapsed 1.56 sec.
 INFO:  analyzing "public.onek"
diff --git a/src/backend/commands/vacuumlazy.c b/src/backend/commands/vacuumlazy.c
index 6db6c5c..af36486 100644
--- a/src/backend/commands/vacuumlazy.c
+++ b/src/backend/commands/vacuumlazy.c
@@ -105,6 +105,7 @@ typedef struct LVRelStats
 	BlockNumber old_rel_pages;	/* previous value of pg_class.relpages */
 	BlockNumber rel_pages;		/* total number of pages */
 	BlockNumber scanned_pages;	/* number of pages we examined */
+	BlockNumber	pinned_pages;	/* # of pages we could not initially lock */
 	double		scanned_tuples; /* counts only tuples on scanned pages */
 	double		old_rel_tuples; /* previous value of pg_class.reltuples */
 	double		new_rel_tuples; /* new estimated total # of tuples */
@@ -345,7 +346,7 @@ lazy_vacuum_rel(Relation onerel, VacuumStmt *vacstmt,
 			}
 			ereport(LOG,
 					(errmsg("automatic vacuum of table \"%s.%s.%s\": index scans: %d\n"
-							"pages: %d removed, %d remain\n"
+							"pages: %d removed, %d remain, %d pinned\n"
 							"tuples: %.0f removed, %.0f remain, %.0f are dead but not yet removable\n"
 							"buffer usage: %d hits, %d misses, %d dirtied\n"
 					  "avg read rate: %.3f MB/s, avg write rate: %.3f MB/s\n"
@@ -356,6 +357,7 @@ lazy_vacuum_rel(Relation onerel, VacuumStmt *vacstmt,
 							vacrelstats->num_index_scans,
 							vacrelstats->pages_removed,
 							vacrelstats->rel_pages,
+							vacrelstats->pinned_pages,
 							vacrelstats->tuples_deleted,
 							vacrelstats->new_rel_tuples,
 							vacrelstats->new_dead_tuples,
@@ -611,6 +613,8 @@ lazy_scan_heap(Relation onerel, LVRelStats *vacrelstats,
 		/* We need buffer cleanup lock so that we can prune HOT chains. */
 		if (!ConditionalLockBufferForCleanup(buf))
 		{
+			vacrelstats->pinned_pages++;
+
 			/*
 			 * If we're not scanning the whole relation to guard against XID
 			 * wraparound, it's OK to skip vacuuming a page.  The next vacuum
@@ -1101,10 +1105,12 @@ lazy_scan_heap(Relation onerel, LVRelStats *vacrelstats,
 					vacrelstats->scanned_pages, nblocks),
 			 errdetail("%.0f dead row versions cannot be removed yet.\n"
 					   "There were %.0f unused item pointers.\n"
+					   "%u pages were pinned.\n"
 					   "%u pages are entirely empty.\n"
 					   "%s.",
 					   nkeep,
 					   nunused,
+					   vacrelstats->pinned_pages,
 					   empty_pages,
 					   pg_rusage_show(&ru0))));
 }