btrfs: fix wrong length parameter for btrfs_cleanup_ordered_extents()

Inside nocow_one_range(), if the checksum cloning for data reloc inode
failed, we call btrfs_cleanup_ordered_extents() to cleanup the just
allocated ordered extents.

But unlike extent_clear_unlock_delalloc(),
btrfs_cleanup_ordered_extents() requires a length, not an inclusive end
bytenr.

This can be problematic, as the @end is normally way larger than @len.

This means btrfs_cleanup_ordered_extents() can be called on folios
out of the correct range, and if the out-of-range folio is under
writeback, we can incorrectly clear the ordered flag of the folio, and
trigger the DEBUG_WARN() inside btrfs_writepage_cow_fixup().

Fix the wrong parameter with correct length instead.

Fixes: 94f6c5c17e52 ("btrfs: move ordered extent cleanup to where they are allocated")
CC: [email protected] # 6.15+
Reviewed-by: Boris Burkov <[email protected]>
Signed-off-by: Qu Wenruo <[email protected]>
Reviewed-by: David Sterba <[email protected]>
Signed-off-by: David Sterba <[email protected]>

0 files changed, 0 insertions, 0 deletions