From: Valentine Barshak <vbarshak@ru.mvista.com>

The patch makes posix_fadvise return ESPIPE on FIFO/pipe in order to be
fully POSIX-compliant.

Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 mm/fadvise.c |    5 +++++
 1 files changed, 5 insertions(+)

diff -puN mm/fadvise.c~fadvise-return-espipe-on-fifo-pipe mm/fadvise.c
--- 25/mm/fadvise.c~fadvise-return-espipe-on-fifo-pipe	Fri Dec  9 14:59:43 2005
+++ 25-akpm/mm/fadvise.c	Fri Dec  9 14:59:43 2005
@@ -37,6 +37,11 @@ asmlinkage long sys_fadvise64_64(int fd,
 	if (!file)
 		return -EBADF;
 
+	if (S_ISFIFO(file->f_dentry->d_inode->i_mode)) {
+		ret = -ESPIPE;
+		goto out;
+	}
+
 	mapping = file->f_mapping;
 	if (!mapping || len < 0) {
 		ret = -EINVAL;
_