From: Andres Freund <andres@anarazel.de>
Date: Wed, 24 Jun 2020 23:35:49 +0000 (-0700)
Subject: aio: WIP: align PGAlignedBlock to page size
X-Git-Url: http://git.postgresql.org/gitweb/static/gitweb.js?a=commitdiff_plain;h=7940f5a43fc10275d99db6d4cde8a8e4adb55bae;p=users%2Fandresfreund%2Fpostgres.git

aio: WIP: align PGAlignedBlock to page size

Author:
Reviewed-By:
Discussion: https://postgr.es/m/
Backpatch:
---

diff --git a/src/include/c.h b/src/include/c.h
index ae978830da..f1cc66354b 100644
--- a/src/include/c.h
+++ b/src/include/c.h
@@ -1129,7 +1129,7 @@ typedef union PGAlignedBlock
 	char		data[BLCKSZ];
 	double		force_align_d;
 	int64		force_align_i64;
-} PGAlignedBlock;
+} PGAlignedBlock __attribute__((aligned(4096)));
 
 /* Same, but for an XLOG_BLCKSZ-sized buffer */
 typedef union PGAlignedXLogBlock
@@ -1137,7 +1137,7 @@ typedef union PGAlignedXLogBlock
 	char		data[XLOG_BLCKSZ];
 	double		force_align_d;
 	int64		force_align_i64;
-} PGAlignedXLogBlock;
+} PGAlignedXLogBlock  __attribute__((aligned(4096)));
 
 /* msb for char */
 #define HIGHBIT					(0x80)