1 files changed, 3 insertions, 0 deletions

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index e01c0d0310ab..59660293d291 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -3949,6 +3949,8 @@ again:
             found_type == BTRFS_FILE_EXTENT_PREALLOC) {
                 em->start = extent_start;
                 em->len = extent_end - extent_start;
+                em->orig_start = extent_start -
+                                 btrfs_file_extent_offset(leaf, item);
                 bytenr = btrfs_file_extent_disk_bytenr(leaf, item);
                 if (bytenr == 0) {
                         em->block_start = EXTENT_MAP_HOLE;
@@ -3988,6 +3990,7 @@ again:
                 em->start = extent_start + extent_offset;
                 em->len = (copy_size + root->sectorsize - 1) &
                         ~((u64)root->sectorsize - 1);
+                em->orig_start = EXTENT_MAP_INLINE;
                 if (compressed)
                         set_bit(EXTENT_FLAG_COMPRESSED, &em->flags);
                 ptr = btrfs_file_extent_inline_start(item) + extent_offset;