From: KUROSAWA Takahiro <kurosawa@valinux.co.jp>

This patch fixes minor problem that the CPUSETS have when files in the
cpuset filesystem are read after lseek()-ed beyond the EOF.

Signed-off-by: KUROSAWA Takahiro <kurosawa@valinux.co.jp>
Cc: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 kernel/cpuset.c |    4 ++++
 1 files changed, 4 insertions(+)

diff -puN kernel/cpuset.c~subcpusets-fix-for-cpusets-minor-problem kernel/cpuset.c
--- devel/kernel/cpuset.c~subcpusets-fix-for-cpusets-minor-problem	2005-09-07 23:15:52.000000000 -0700
+++ devel-akpm/kernel/cpuset.c	2005-09-07 23:15:52.000000000 -0700
@@ -972,6 +972,10 @@ static ssize_t cpuset_common_file_read(s
 	*s++ = '\n';
 	*s = '\0';
 
+	/* Do nothing if *ppos is at the eof or beyond the eof. */
+	if (s - page <= *ppos)
+		return 0;
+
 	start = page + *ppos;
 	n = s - start;
 	retval = n - copy_to_user(buf, start, min(n, nbytes));
_