ra_min => req_size.
Now it is for try_context_based_readahead() to compute ra_min from req_size.

Please fold it into readahead-nfsd-case.patch to avoid a compiling error.

Signed-off-by: Fengguang Wu <wfg@mail.ustc.edu.cn>
---
 mm/readahead.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-2.6.20-rc3-mm1.orig/mm/readahead.c
+++ linux-2.6.20-rc3-mm1/mm/readahead.c
@@ -1673,7 +1673,7 @@ readit:
 		   !probe_page(mapping, ra_index)) {
 			ra->prev_page = ra_index - 1;
 			ret = try_context_based_readahead(mapping, ra, NULL,
-						 ra_index, ra_min, ra_max);
+						 ra_index, req_size, ra_max);
 			if (ret > 0)
 				ra_size += ra_submit(ra, mapping, filp);
 		}

--