Fix page-level checksum calculation in checksum_impl.h

Issue introduced by me, as of 0065174.

Reported-by: David Steele
Discussion: https://postgr.es/m/1cf30561-7dad-dc6e-9fc3-5c456948cfeb@pgmasters.net

diff --git a/src/include/storage/checksum_impl.h b/src/include/storage/checksum_impl.h
index 2f81cdf5b50d561b23037960145670494646389c..364acfafd21cc8f3d68389d77027998f24e4100e 100644 (file)
--- a/src/include/storage/checksum_impl.h
+++ b/src/include/storage/checksum_impl.h
@@ -211,5 +211,5 @@ pg_checksum_page(char *page, BlockNumber blkno)
     * Reduce to a uint16 (to fit in the pd_checksum field) with an offset of
     * one. That avoids checksums of zero, which seems like a good idea.
     */
-   return (uint16) ((checksum % 65536) + 1);
+   return (uint16) ((checksum % 65535) + 1);
 }