Btrfs: Index extent buffers in an rbtree

[sfrench/cifs-2.6.git] / fs / btrfs / disk-io.c

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 99bb385c298274fc7f53c27af13c27060752c223..86e84a8579e32dd3dd7cfb708ac3d17a3d8ef077 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -381,7 +381,6 @@ int btree_readpage_end_io_hook(struct page *page, u64 start, u64 end,
 
        end = min_t(u64, eb->len, PAGE_CACHE_SIZE);
        end = eb->start + end - 1;
-       release_extent_buffer_tail_pages(eb);
 err:
        free_extent_buffer(eb);
 out:
@@ -563,21 +562,21 @@ static int btree_releasepage(struct page *page, gfp_t gfp_flags)
        struct extent_map_tree *map;
        int ret;
 
-       if (page_count(page) > 3) {
-               /* once for page->private, once for the caller, once
-                * once for the page cache
-                */
-               return 0;
-       }
        tree = &BTRFS_I(page->mapping->host)->io_tree;
        map = &BTRFS_I(page->mapping->host)->extent_tree;
+
        ret = try_release_extent_state(map, tree, page, gfp_flags);
+       if (!ret) {
+               return 0;
+       }
+
+       ret = try_release_extent_buffer(tree, page);
        if (ret == 1) {
-               invalidate_extent_lru(tree, page_offset(page), PAGE_CACHE_SIZE);
                ClearPagePrivate(page);
                set_page_private(page, 0);
                page_cache_release(page);
        }
+
        return ret;
 }
 
@@ -588,7 +587,8 @@ static void btree_invalidatepage(struct page *page, unsigned long offset)
        extent_invalidatepage(tree, page, offset);
        btree_releasepage(page, GFP_NOFS);
        if (PagePrivate(page)) {
-               invalidate_extent_lru(tree, page_offset(page), PAGE_CACHE_SIZE);
+               printk("warning page private not zero on page %Lu\n",
+                      page_offset(page));
                ClearPagePrivate(page);
                set_page_private(page, 0);
                page_cache_release(page);
@@ -1456,7 +1456,6 @@ fail_tree_root:
        free_extent_buffer(tree_root->node);
 fail_sys_array:
 fail_sb_buffer:
-       extent_io_tree_empty_lru(&BTRFS_I(fs_info->btree_inode)->io_tree);
        btrfs_stop_workers(&fs_info->fixup_workers);
        btrfs_stop_workers(&fs_info->workers);
        btrfs_stop_workers(&fs_info->endio_workers);
@@ -1705,13 +1704,6 @@ int close_ctree(struct btrfs_root *root)
 
        filemap_write_and_wait(fs_info->btree_inode->i_mapping);
 
-       extent_io_tree_empty_lru(&fs_info->free_space_cache);
-       extent_io_tree_empty_lru(&fs_info->block_group_cache);
-       extent_io_tree_empty_lru(&fs_info->pinned_extents);
-       extent_io_tree_empty_lru(&fs_info->pending_del);
-       extent_io_tree_empty_lru(&fs_info->extent_ins);
-       extent_io_tree_empty_lru(&BTRFS_I(fs_info->btree_inode)->io_tree);
-
        truncate_inode_pages(fs_info->btree_inode->i_mapping, 0);
 
        btrfs_stop_workers(&fs_info->fixup_workers);