linux-kernel - [PATCH] readahead: remove redundant test in shrink_readahead_size

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Date:	Tue, 14 Apr 2009 09:37:30 +0800
From:	Wu Fengguang <fengguang.wu@...el.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] readahead: remove redundant test in
	shrink_readahead_size_eio()

Signed-off-by: Wu Fengguang <fengguang.wu@...el.com>
---
 mm/filemap.c |    3 ---
 1 file changed, 3 deletions(-)

--- mm.orig/mm/filemap.c
+++ mm/mm/filemap.c
@@ -1072,9 +1072,6 @@ EXPORT_SYMBOL(grab_cache_page_nowait);
 static void shrink_readahead_size_eio(struct file *filp,
 					struct file_ra_state *ra)
 {
-	if (!ra->ra_pages)
-		return;
-
 	ra->ra_pages /= 4;
 }
 
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