xfs: remove XFS_PREALLOC_SYNC

stable inclusion
from stable-v5.10.167
commit 35f049abbae3954fe2c3d57d62fe6624d9b29df6
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I76JSK
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=35f049abbae3954fe2c3d57d62fe6624d9b29df6



--------------------------------

commit 472c6e46 upstream.

[partial backport for dependency -
 xfs_ioc_space() still uses XFS_PREALLOC_SYNC]

Callers can acheive the same thing by calling xfs_log_force_inode()
after making their modifications. There is no need for
xfs_update_prealloc_flags() to do this.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Signed-off-by: Long Li <leo.lilong@huawei.com>