From 029e332ea717810172e965ec50f942755ad0c58a Mon Sep 17 00:00:00 2001
From: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Date: Thu, 2 Nov 2006 22:07:06 -0800
Subject: [PATCH] [PATCH] Cleanup read_pages()
Current read_pages() assume ->readpages() frees the passed pages.
This patch free the pages in ->read_pages(), if those were remaining in the
pages_list. So, readpages() just can ignore the remaining pages in
pages_list.
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Steven French <sfrench@us.ibm.com>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
mm/readahead.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/mm/readahead.c b/mm/readahead.c
index 1ba736ac0367..23cb61a01c6e 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -173,6 +173,8 @@ static int read_pages(struct address_space *mapping, struct file *filp,
if (mapping->a_ops->readpages) {
ret = mapping->a_ops->readpages(filp, mapping, pages, nr_pages);
+ /* Clean up the remaining pages */
+ put_pages_list(pages);
goto out;
}
--
2.34.1