xfs: evict CoW fork extents when performing finsert/fcollapse

When we perform an finsert/fcollapse operation, cancel all the CoW
extents for the affected file offset range so that they don't end up
pointing to the wrong blocks.

Reported-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Darrick J. Wong 6 years ago
parent cc6f77710a
commit 3af423b034

@ -1459,7 +1459,19 @@ xfs_shift_file_space(
return error;
* The extent shiting code works on extent granularity. So, if
* Clean out anything hanging around in the cow fork now that
* we've flushed all the dirty data out to disk to avoid having
* CoW extents at the wrong offsets.
if (xfs_is_reflink_inode(ip)) {
error = xfs_reflink_cancel_cow_range(ip, offset, NULLFILEOFF,
if (error)
return error;
* The extent shifting code works on extent granularity. So, if
* stop_fsb is not the starting block of extent, we need to split
* the extent at stop_fsb.