[PATCH 9/9] readahead: call max_sane_readahead() in ondemand_readahead()

[Fengguang Wu <wfg@mail.ustc.edu.cn>]

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Apply the max_sane_readahead() limit in ondemand_readahead().
Just in case someone aggressively set a huge readahead size.

Signed-off-by: Fengguang Wu <wfg@mail.ustc.edu.cn>
---
 mm/readahead.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- linux-2.6.24-rc5-mm1.orig/mm/readahead.c
+++ linux-2.6.24-rc5-mm1/mm/readahead.c
@@ -324,9 +324,9 @@ ondemand_readahead(struct address_space 
 		   bool hit_readahead_marker, pgoff_t offset,
 		   unsigned long req_size)
 {
-	int	max = ra->ra_pages;	/* max readahead pages */
 	pgoff_t prev_offset;
-	int	sequential;
+	int sequential;
+	int max = max_sane_readahead(ra->ra_pages);  /* max readahead pages */
 
 	/*
 	 * It's the expected callback offset, assume sequential access.

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