From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail143.messagelabs.com (mail143.messagelabs.com [216.82.254.35]) by kanga.kvack.org (Postfix) with SMTP id 2496D6B0088 for ; Tue, 23 Nov 2010 09:50:23 -0500 (EST) Received: by vws10 with SMTP id 10so4191279vws.14 for ; Tue, 23 Nov 2010 06:50:18 -0800 (PST) From: Ben Gamari Subject: [PATCH 1/3] Add fadvise interface wrapper Date: Tue, 23 Nov 2010 09:49:50 -0500 Message-Id: <1290523792-6170-2-git-send-email-bgamari.foss@gmail.com> In-Reply-To: <20101122103756.E236.A69D9226@jp.fujitsu.com> References: <20101122103756.E236.A69D9226@jp.fujitsu.com> Sender: owner-linux-mm@kvack.org To: KOSAKI Motohiro , Minchan Kim , rsync@lists.samba.org Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Rik van Riel , Andrew Morton , Johannes Weiner , Nick Piggin , Ben Gamari List-ID: With recent discussion on the LKML[1], it seems likely that Linux will finally support posix_fadvise in a useful way with the FADV_DONTNEED flag. This should allow us to minimize the effect of rsync on the system's working set. Add the necessary wrapper to syscall.c. [1] http://lkml.org/lkml/2010/11/21/59 --- syscall.c | 11 +++++++++++ 1 files changed, 11 insertions(+), 0 deletions(-) diff --git a/syscall.c b/syscall.c index cfabc3e..9f5b1c3 100644 --- a/syscall.c +++ b/syscall.c @@ -28,6 +28,7 @@ #ifdef HAVE_SYS_ATTR_H #include #endif +#include extern int dry_run; extern int am_root; @@ -282,3 +283,13 @@ OFF_T do_lseek(int fd, OFF_T offset, int whence) return lseek(fd, offset, whence); #endif } + +#if _XOPEN_SOURCE >= 600 +int do_fadvise(int fd, OFF_T offset, OFF_T len, int advise) +{ + return posix_fadvise(fd, offset, len, advise); +} +#else +#define do_fadvise() +#endif + -- 1.7.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: email@kvack.org