Btrfs: Fix extent replacment race

[linux-2.6-block.git] / fs / btrfs / ioctl.c

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 9f4db848db10dcb24c40ebe2529b3ff609c9cc1b..e2d8e90259b05c2499a1f9cbc54ac9cf529ecbe0 100644 (file)
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -597,9 +597,8 @@ again:
                clear_page_dirty_for_io(page);
 
                btrfs_set_extent_delalloc(inode, page_start, page_end);
-
-               unlock_extent(io_tree, page_start, page_end, GFP_NOFS);
                set_page_dirty(page);
+               unlock_extent(io_tree, page_start, page_end, GFP_NOFS);
                unlock_page(page);
                page_cache_release(page);
                balance_dirty_pages_ratelimited_nr(inode->i_mapping, 1);
@@ -977,7 +976,7 @@ static long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
 
        /* punch hole in destination first */
        btrfs_drop_extents(trans, root, inode, off, off + len,
-                          off + len, 0, &hint_byte);
+                          off + len, 0, &hint_byte, 1);
 
        /* clone data */
        key.objectid = src->i_ino;