[PATCH 12/14] readahead: account I/O block times for stock readahead

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

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Account I/O block times for the stock readahead, too.

Signed-off-by: Fengguang Wu <wfg@mail.ustc.edu.cn>

---
 mm/readahead.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- linux-2.6.21-rc3-mm2.orig/mm/readahead.c
+++ linux-2.6.21-rc3-mm2/mm/readahead.c
@@ -1756,15 +1756,15 @@ EXPORT_SYMBOL_GPL(page_cache_readahead_a
  */
 void readahead_cache_hit(struct file_ra_state *ra, struct page *page)
 {
-	if (!prefer_adaptive_readahead())
-		return;
-
 	if (PageActive(page) || PageReferenced(page))
 		return;
 
 	if (!PageUptodate(page))
 		ra_account(ra, RA_EVENT_IO_BLOCK, 1);
 
+	if (!prefer_adaptive_readahead())
+		return;
+
 	if (!ra_has_index(ra, page->index))
 		return;
 

--