fs/ntfs3: drop preallocated clusters for sparse and compressed files

[ Upstream commit 3a6aba7 ]

Do not keep preallocated clusters for sparsed and compressed files.
Preserving preallocation in these cases causes fsx failures when running
with sparse files and preallocation enabled.

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: aalexandrovich

fs/ntfs3/attrib.c

@@ -448,8 +448,10 @@ int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type,
 
 	is_ext = is_attr_ext(attr_b);
 	align = sbi->cluster_size;
-	if (is_ext)
+	if (is_ext) {
 		align <<= attr_b->nres.c_unit;
+		keep_prealloc = false;
+	}
 
 	old_valid = le64_to_cpu(attr_b->nres.valid_size);
 	old_size = le64_to_cpu(attr_b->nres.data_size);