diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-10-17 13:12:04 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2019-10-21 08:51:59 -0700 |
| commit | 05b30949f1aa8d797eb5c1cf7a24b9c4f8e82320 (patch) | |
| tree | fb6976b8f97659e26f26de6a85dc46e3bf930c72 /fs/xfs/xfs_iomap.c | |
| parent | 2492a606b3d24ed901203bd4db19f46d112811c7 (diff) | |
xfs: set IOMAP_F_NEW more carefully
Don't set IOMAP_F_NEW if we COW over an existing allocated range, as
these aren't strictly new allocations. This is required to be able to
use IOMAP_F_NEW to zero newly allocated blocks, which is required for
the iomap code to fully support file systems that don't do delayed
allocations or use unwritten extents.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/xfs/xfs_iomap.c')
| -rw-r--r-- | fs/xfs/xfs_iomap.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 699bbb81b8a8..f7b8b1329ddd 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -707,9 +707,12 @@ retry: * Flag newly allocated delalloc blocks with IOMAP_F_NEW so we punch * them out if the write happens to fail. */ - iomap_flags |= IOMAP_F_NEW; - trace_xfs_iomap_alloc(ip, offset, count, whichfork, - whichfork == XFS_DATA_FORK ? &imap : &cmap); + if (whichfork == XFS_DATA_FORK) { + iomap_flags |= IOMAP_F_NEW; + trace_xfs_iomap_alloc(ip, offset, count, whichfork, &imap); + } else { + trace_xfs_iomap_alloc(ip, offset, count, whichfork, &cmap); + } done: if (whichfork == XFS_COW_FORK) { if (imap.br_startoff > offset_fsb) { |