From: Steven Pratt <slpratt@austin.ibm.com>
Date: Tue, 6 Sep 2005 22:17:06 +0000 (-0700)
Subject: [PATCH] readahead: reset cache_hit earlier
X-Git-Tag: v2.6.16.28-rc1~4480
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3b30bbd963ac2606b0377b39c9d148d6eeef7dce;p=karo-tx-linux.git

[PATCH] readahead: reset cache_hit earlier

We don't reset the cache hit count until after readahead does a successful
readahead.  This seems to leave a corner case open where we miss in cache,
but don't restart the readhead right away.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/mm/readahead.c b/mm/readahead.c
index b840e7c6ea74..d0b50034e245 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -540,6 +540,7 @@ void handle_ra_miss(struct address_space *mapping,
 {
 	ra->flags |= RA_FLAG_MISS;
 	ra->flags &= ~RA_FLAG_INCACHE;
+	ra->cache_hit = 0;
 }
 
 /*