xfs: refactor xfs_bunmapi_cow

Split out two helpers for deleting delayed or real extents from the COW fork.
This allows to call them directly from xfs_reflink_cow_end_io once that
function is refactored to iterate the extent tree.  It will also allow
to reuse the delalloc deletion from xfs_bunmapi in the future.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

1 files changed, 0 insertions, 5 deletions

diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c
index 9c477de3c1ac..09bd5dcd90cd 100644
--- a/fs/xfs/xfs_reflink.c
+++ b/fs/xfs/xfs_reflink.c
@@ -534,11 +534,6 @@ xfs_reflink_cancel_cow_blocks(
                 trace_xfs_reflink_cancel_cow(ip, &irec);
 
                 if (irec.br_startblock == DELAYSTARTBLOCK) {
-                        /* Free a delayed allocation. */
-                        xfs_mod_fdblocks(ip->i_mount, irec.br_blockcount,
-                                        false);
-                        ip->i_delayed_blks -= irec.br_blockcount;
-
                         /* Remove the mapping from the CoW fork. */
                         error = xfs_bunmapi_cow(ip, &irec);
                         if (error)