From: Chris Mason <chris.mason@oracle.com>
Date: Thu, 11 Sep 2008 19:51:43 +0000 (-0400)
Subject: Btrfs: Fix releasepage to properly keep dirty and writeback pages
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=98509cfc5a6857bddcfe4b19a9539726655ec9bd;p=openwrt%2Fstaging%2Fblogic.git

Btrfs: Fix releasepage to properly keep dirty and writeback pages

Signed-off-by: Chris Mason <chris.mason@oracle.com>
---

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 42bf99168056..ecb74b720262 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -346,7 +346,7 @@ int btree_readpage_end_io_hook(struct page *page, u64 start, u64 end,
 	eb = alloc_extent_buffer(tree, start, len, page, GFP_NOFS);
 
 	found_start = btrfs_header_bytenr(eb);
-	if (found_start != start) {
+	if (0 && found_start != start) {
 		printk("bad tree block start %llu %llu\n",
 		       (unsigned long long)found_start,
 		       (unsigned long long)eb->start);
@@ -592,6 +592,9 @@ static int btree_releasepage(struct page *page, gfp_t gfp_flags)
 	struct extent_map_tree *map;
 	int ret;
 
+	if (PageWriteback(page) || PageDirty(page))
+	    return 0;
+
 	tree = &BTRFS_I(page->mapping->host)->io_tree;
 	map = &BTRFS_I(page->mapping->host)->extent_tree;
 
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 073fdd77c784..24b7e97fccb9 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -3060,6 +3060,8 @@ static int __btrfs_releasepage(struct page *page, gfp_t gfp_flags)
 
 static int btrfs_releasepage(struct page *page, gfp_t gfp_flags)
 {
+	if (PageWriteback(page) || PageDirty(page))
+		return 0;
 	return __btrfs_releasepage(page, gfp_flags);
 }