diff options
| author | Darrick J. Wong <darrick.wong@oracle.com> | 2017-09-18 19:41:17 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-27 11:39:16 +0300 |
| commit | 2bf3122f2130ff66dfc2e1ea662e4d4d2d05efb1 (patch) | |
| tree | 2b42980ee1c4ee0d1e496aca52531d88df70480c /fs | |
| parent | a58a0826656d3159fd0cd0d8be63a80edf4dae07 (diff) | |
| download | linux-2bf3122f2130ff66dfc2e1ea662e4d4d2d05efb1.tar.xz | |
xfs: evict CoW fork extents when performing finsert/fcollapse
commit 3af423b03435c81036fa710623d3ae92fbe346a3 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 3e9b7a4fb8fd..1de4e96df15a 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. */ |