Add missing shmem size estimate for fast-path locking struct

It's been missing ever since fast-path locking was introduced. It's a
small discrepancy, about 4 kB, but let's be tidy. This doesn't seem
worth backpatching, however; in stable branches we were less precise
about the estimates and e.g. added a 10% margin to the hash table
estimates, which is usually much bigger than this discrepancy.

diff --git a/src/backend/storage/lmgr/lock.c b/src/backend/storage/lmgr/lock.c
index 9dae407981f65007f42a6620a41f57bec7011497..798c453ab38d70bb699bde36f0342189dc7adc70 100644 (file)
--- a/src/backend/storage/lmgr/lock.c
+++ b/src/backend/storage/lmgr/lock.c
@@ -3775,6 +3775,9 @@ LockManagerShmemSize(void)
        max_table_size *= 2;
        size = add_size(size, hash_estimate_size(max_table_size, sizeof(PROCLOCK)));
 
+       /* fast-path structures */
+       size = add_size(size, sizeof(FastPathStrongRelationLockData));
+
        return size;
 }