Fix btrfs_del_ordered_inode to allow forcing the drop during unlinks

This allows us to delete an unlinked inode with dirty pages from the list
instead of forcing commit to write these out before deleting the inode.

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

1 files changed, 13 insertions, 5 deletions

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 1b756fa..9601241 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1245,7 +1245,10 @@ int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root
 	int level;
 	int should_reada = p->reada;
 	int lowest_unlock = 1;
+	int blocksize;
 	u8 lowest_level = 0;
+	u64 blocknr;
+	u64 gen;
 
 	lowest_level = p->lowest_level;
 	WARN_ON(lowest_level && ins_len);
@@ -1320,11 +1323,12 @@ again:
 				reada_for_search(root, p, level, slot,
 						 key->objectid);
 
-			tmp = btrfs_find_tree_block(root,
-					  btrfs_node_blockptr(b, slot),
-					  btrfs_level_size(root, level - 1));
-			if (tmp && btrfs_buffer_uptodate(tmp,
-				   btrfs_node_ptr_generation(b, slot))) {
+			blocknr = btrfs_node_blockptr(b, slot);
+			gen = btrfs_node_ptr_generation(b, slot);
+			blocksize = btrfs_level_size(root, level - 1);
+
+			tmp = btrfs_find_tree_block(root, blocknr, blocksize);
+			if (tmp && btrfs_buffer_uptodate(tmp, gen)) {
 				b = tmp;
 			} else {
 				/*
@@ -1336,6 +1340,10 @@ again:
 					btrfs_release_path(NULL, p);
 					if (tmp)
 						free_extent_buffer(tmp);
+					tmp = read_tree_block(root, blocknr,
+							 blocksize, gen);
+					if (tmp)
+						free_extent_buffer(tmp);
 					goto again;
 				} else {
 					b = read_node_slot(root, b, slot);