lkml.org 
[lkml]   [2010]   [Nov]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 1/3] Add fadvise interface wrapper
Date
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 <sys/attr.h>
#endif
+#include <fcntl.h>

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


\
 
 \ /
  Last update: 2010-11-23 15:53    [from the cache]
©2003-2011 Jasper Spaans