Fix error in cfs_alloc_page

knizhnik · knizhnik · commit 84270b75de93 · 2017-06-23T13:26:06.000+03:00
diff --git a/src/backend/storage/file/cfs.c b/src/backend/storage/file/cfs.c
@@ -479,7 +479,7 @@ uint32 cfs_alloc_page(FileMap* map, uint32 oldSize, uint32 newSize)
 			elog(ERROR, "CFS: segment file exceed 4Gb limit");
 	} while (!pg_atomic_compare_exchange_u32(&map->hdr.physSize, &oldPhysSize, newPhysSize));
 
-	pg_atomic_fetch_sub_u32(&map->hdr.usedSize, newSize - oldSize);
+	pg_atomic_fetch_add_u32(&map->hdr.usedSize, newSize - oldSize);
 
 	return oldPhysSize;
 }

Original file line number	Diff line number	Diff line change
`@@ -479,7 +479,7 @@ uint32 cfs_alloc_page(FileMap* map, uint32 oldSize, uint32 newSize)`
`479`	`479`	`elog(ERROR, "CFS: segment file exceed 4Gb limit");`
`480`	`480`	`} while (!pg_atomic_compare_exchange_u32(&map->hdr.physSize, &oldPhysSize, newPhysSize));`
`481`	`481`
`482`		`- pg_atomic_fetch_sub_u32(&map->hdr.usedSize, newSize - oldSize);`
	`482`	`+ pg_atomic_fetch_add_u32(&map->hdr.usedSize, newSize - oldSize);`
`483`	`483`
`484`	`484`	`return oldPhysSize;`
`485`	`485`	`}`