[PATCH 2/3] exec: posix_madvise usage on SunOS.

[David CARLIER]

>From a9e3cced279ae55a59847ba232f7828bc2479367 Mon Sep 17 00:00:00 2001
From: David Carlier <devnexen@gmail.com>
Date: Sat, 18 Jul 2020 13:29:44 +0100
Subject: [PATCH 2/3] exec: posix_madvise usage on SunOS.

with _XOPEN_SOURCE set, the older mman.h API based on caddr_t handling
is not accessible thus using posix_madvise here.

Signed-off-by: David Carlier <devnexen@gmail.com>
---
 exec.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/exec.c b/exec.c
index 6f381f98e2..0466a75b89 100644
--- a/exec.c
+++ b/exec.c
@@ -3964,7 +3964,15 @@ int ram_block_discard_range(RAMBlock *rb,
uint64_t start, size_t length)
              * fallocate'd away).
              */
 #if defined(CONFIG_MADVISE)
+#if !defined(CONFIG_SOLARIS)
             ret =  madvise(host_startaddr, length, MADV_DONTNEED);
+#else
+        /*
+         * mmap and its caddr_t based api is not accessible
+         * with _XOPEN_SOURCE set on illumos
+         */
+            ret =  posix_madvise(host_startaddr, length, POSIX_MADV_DONTNEED);
+#endif
             if (ret) {
                 ret = -errno;
                 error_report("ram_block_discard_range: Failed to
discard range "
-- 
2.25.4