[PATCH] remap_file_pages.2: Not actually useful on real files.
From: Andy Lutomirski <hidden>
Date: 2012-12-19 22:12:33
Subsystem:
the rest · Maintainer:
Linus Torvalds
Linux commit 3ee6dafc677a68e461a7ddafc94a580ebab80735 caused remap_file_pages to be emulated when used on real file. Signed-off-by: Andy Lutomirski <redacted> --- man2/remap_file_pages.2 | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/man2/remap_file_pages.2 b/man2/remap_file_pages.2
index f96f594..f6dee99 100644
--- a/man2/remap_file_pages.2
+++ b/man2/remap_file_pages.2@@ -148,6 +148,12 @@ The .BR remap_file_pages () system call appeared in Linux 2.5.46; glibc support was added in version 2.3.3. + +.BR remap_file_pages () +has no performance advantage over +.BR mmap (2) +when used on real (as opposed to purely in-memory) files as of Linux 2.6.23: +on real files it creates a separate vma for each range. .SH "CONFORMING TO" The .BR remap_file_pages ()
--
1.7.11.7
--
To unsubscribe from this list: send the line "unsubscribe linux-man" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html