From: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Date: Fri, 12 Dec 2025 11:27:48 +0000 (+0300)
Subject: fs/ntfs3: drop preallocated clusters for sparse and compressed files
X-Git-Tag: v6.19.6~443
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=824ed8d874f5c2e9ea8511540e88b6df7bbf1f72;p=thirdparty%2Fkernel%2Fstable.git

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

[ Upstream commit 3a6aba7f3cf2b46816e08548c254d98de9c74eba ]

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>
---

diff --git a/fs/ntfs3/attrib.c b/fs/ntfs3/attrib.c
index c45880ab23912..0cd15a0983fee 100644
--- a/fs/ntfs3/attrib.c
+++ b/fs/ntfs3/attrib.c
@@ -448,8 +448,10 @@ again:
 
 	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);