readahead: apply max_sane_readahead() limit in ondemand_readahead()

Just in case someone aggressively sets a huge readahead size. Cc: Nick Piggin <[email protected]> Signed-off-by: Wu Fengguang <[email protected]> Cc: Ying Han <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
chewitt · Jun 17, 2009 · fc31d16 · fc31d16
1 parent f7e839d
commit fc31d16
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/mm/readahead.c b/mm/readahead.c
@@ -357,7 +357,7 @@ ondemand_readahead(struct address_space *mapping,
 		   bool hit_readahead_marker, pgoff_t offset,
 		   unsigned long req_size)
 {
-	int	max = ra->ra_pages;	/* max readahead pages */
+	unsigned long max = max_sane_readahead(ra->ra_pages);
 	pgoff_t prev_offset;
 	int	sequential;