linux-kernel - [PATCH] fs/ntfs3: Forbid FALLOC_FL_PUNCH

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Date:   Tue, 28 Sep 2021 20:25:58 +0300
From:   Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
To:     <ntfs3@...ts.linux.dev>
CC:     <linux-kernel@...r.kernel.org>, <linux-fsdevel@...r.kernel.org>
Subject: [PATCH] fs/ntfs3: Forbid FALLOC_FL_PUNCH_HOLE for normal files

FALLOC_FL_PUNCH_HOLE isn't allowed with normal files.
Fixes xfstest generic/016 021 022

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
---
 fs/ntfs3/file.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c
index 5fb3508e5422..02ca665baa5f 100644
--- a/fs/ntfs3/file.c
+++ b/fs/ntfs3/file.c
@@ -587,8 +587,8 @@ static long ntfs_fallocate(struct file *file, int mode, loff_t vbo, loff_t len)
 		truncate_pagecache(inode, vbo_down);
 
 		if (!is_sparsed(ni) && !is_compressed(ni)) {
-			/* Normal file. */
-			err = ntfs_zero_range(inode, vbo, end);
+			/* Normal file, can't make hole. */
+			err = -EOPNOTSUPP;
 			goto out;
 		}
 
-- 
2.33.0