linux-kernel - [PATCH 5.15 022/667] fs/ntfs3: Keep preallocated only if option prealloc enabled

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Message-Id: <20220607164935.460996809@linuxfoundation.org>
Date:   Tue,  7 Jun 2022 18:54:47 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Ganapathi Kamath <hgkamath@...mail.com>,
        Kari Argillander <kari.argillander@...il.com>,
        Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
Subject: [PATCH 5.15 022/667] fs/ntfs3: Keep preallocated only if option prealloc enabled

From: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>

commit e95113ed4d428219e3395044e29f5713fc446720 upstream.

If size of file was reduced, we still kept allocated blocks.
This commit makes ntfs3 work as other fs like btrfs.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=214719
Fixes: 4342306f0f0d ("fs/ntfs3: Add file operations and implementation")

Reported-by: Ganapathi Kamath <hgkamath@...mail.com>
Tested-by: Ganapathi Kamath <hgkamath@...mail.com>
Reviewed-by: Kari Argillander <kari.argillander@...il.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 fs/ntfs3/file.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/ntfs3/file.c
+++ b/fs/ntfs3/file.c
@@ -494,7 +494,7 @@ static int ntfs_truncate(struct inode *i
 
 	down_write(&ni->file.run_lock);
 	err = attr_set_size(ni, ATTR_DATA, NULL, 0, &ni->file.run, new_size,
-			    &new_valid, true, NULL);
+			    &new_valid, ni->mi.sbi->options->prealloc, NULL);
 	up_write(&ni->file.run_lock);
 
 	if (new_valid < ni->i_valid)