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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2017-09-18 09:41:17 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2017-09-25 18:22:30 -0700 |
| commit | 3af423b03435c81036fa710623d3ae92fbe346a3 (patch) | |
| tree | f2041ddc430fbd5a473b21314c9930237fde6fb9 /fs | |
| parent | cc6f77710a6de6210f9feda7cd53e2f5ee7a7e69 (diff) | |
| download | lwn-3af423b03435c81036fa710623d3ae92fbe346a3.tar.gz lwn-3af423b03435c81036fa710623d3ae92fbe346a3.zip | |
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>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/xfs/xfs_bmap_util.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index cd9a5400ba4f..bc6c6e10a969 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -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, + true); + 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. */ |