ntfs: include the final partial cluster in sync writes

ntfs_attrlist_repack() synchronously writes the replacement attribute
list before updating its mapping pairs and freeing the old run. With
512-byte clusters, a 544-byte list submits a 512-byte bio, but the
write returns 544 and repack accepts it as complete. If the later
buffered update does not reach disk, the replacement list lacks its
final 32 bytes.

__ntfs_inode_non_resident_attr_pwrite() converts attr_len to clusters
with ntfs_bytes_to_cluster(), which rounds down. Before repack, its
synchronous callers used either cluster-aligned lengths or lengths
smaller than one cluster, where max_t() selects one.

Round attr_len up so repack writes the final partial cluster before
publishing the new mapping pairs.

Fixes: b1d732e62a5b ("ntfs: repack $MFT/$ATTRIBUTE LIST")
Cc: stable@vger.kernel.org
Assisted-by: LLM
Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

0 files changed, 0 insertions, 0 deletions