提交 c1a94672 编写于 作者: M Mike Snitzer 提交者: Alasdair G Kergon

dm: disable WRITE SAME

WRITE SAME bios are not yet handled correctly by device-mapper so
disable their use on device-mapper devices by setting
max_write_same_sectors to zero.

As an example, a ciphertext device is incompatible because the data
gets changed according to the location at which it written and so the
dm crypt target cannot support it.
Signed-off-by: NMike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
Cc: Milan Broz <mbroz@redhat.com>
Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
上级 e910d7eb
......@@ -1445,6 +1445,8 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
else
queue_flag_clear_unlocked(QUEUE_FLAG_NONROT, q);
q->limits.max_write_same_sectors = 0;
dm_table_set_integrity(t);
/*
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册