---

yaml --- r: 73718 b: refs/heads/master c: 5d0360e h: refs/heads/master v: v3
git-mirror · Nov 15, 2007 · 47d145b · 47d145b
1 parent b5e32cb
commit 47d145b
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Showing 2 changed files with 14 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 822bd5aa2b8e8fa1d328f03bf5b9c75701481bf0
+refs/heads/master: 5d0360ee96a5ef953dbea45873c2a8c87e77d59b
diff --git a/trunk/drivers/block/rd.c b/trunk/drivers/block/rd.c
@@ -189,13 +189,26 @@ static int ramdisk_set_page_dirty(struct page *page)
 	return 0;
 }
 
+/*
+ * releasepage is called by pagevec_strip/try_to_release_page if
+ * buffers_heads_over_limit is true. Without a releasepage function
+ * try_to_free_buffers is called instead. That can unset the dirty
+ * bit of our ram disk pages, which will be eventually freed, even
+ * if the page is still in use.
+ */
+static int ramdisk_releasepage(struct page *page, gfp_t dummy)
+{
+	return 0;
+}
+
 static const struct address_space_operations ramdisk_aops = {
 	.readpage	= ramdisk_readpage,
 	.prepare_write	= ramdisk_prepare_write,
 	.commit_write	= ramdisk_commit_write,
 	.writepage	= ramdisk_writepage,
 	.set_page_dirty	= ramdisk_set_page_dirty,
 	.writepages	= ramdisk_writepages,
+	.releasepage	= ramdisk_releasepage,
 };
 
 static int rd_blkdev_pagecache_IO(int rw, struct bio_vec *vec, sector_t sector,