[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 b840e7c..d0b5003 100644 (file)
--- 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;
 }
 
 /*