fs/ntfs3: Keep preallocated only if option prealloc enabled

BugLink: https://bugs.launchpad.net/bugs/1981864
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@hotmail.com>
Tested-by: Ganapathi Kamath <hgkamath@hotmail.com>
Reviewed-by: Kari Argillander <kari.argillander@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c
index 35ed601aef81ed5a73ec2c199648a2ec69b75fa5..d7128be64cd6116db94b93a9cdbdea3c2a8e359e 100644 (file)
--- a/fs/ntfs3/file.c
+++ b/fs/ntfs3/file.c
@@ -494,7 +494,7 @@ static int ntfs_truncate(struct inode *inode, loff_t new_size)
 
        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)