From: Andrew Morton <akpm@osdl.org>

We're getting unexplained EIOs out of NFS - restore this warning so it doesn't
get forgotten about.

Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 mm/filemap.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff -puN mm/filemap.c~restore-rogue-readahead-printk mm/filemap.c
--- a/mm/filemap.c~restore-rogue-readahead-printk
+++ a/mm/filemap.c
@@ -912,10 +912,17 @@ EXPORT_SYMBOL(grab_cache_page_nowait);
 static void shrink_readahead_size_eio(struct file *filp,
 					struct file_ra_state *ra)
 {
+	static int count;
+
 	if (!ra->ra_pages)
 		return;
 
 	ra->ra_pages /= 4;
+	if (count > 5)
+		return;
+	count++;
+	printk(KERN_WARNING "Reducing readahead size to %luK\n",
+		ra->ra_pages << (PAGE_CACHE_SHIFT - 10));
 }
 
 /**
_