Files
linux/fs
Zhang Xiaoxu 39dad73040 cifs/smb3: Fix data inconsistent when zero file range
[ Upstream commit 6b69040247 ]

CIFS implements the fallocate(FALLOC_FL_ZERO_RANGE) with send SMB
ioctl(FSCTL_SET_ZERO_DATA) to server. It just set the range of the
remote file to zero, but local page cache not update, then the data
inconsistent with server, which leads the xfstest generic/008 failed.

So we need to remove the local page caches before send SMB
ioctl(FSCTL_SET_ZERO_DATA) to server. After next read, it will
re-cache it.

Fixes: 30175628bf ("[SMB3] Enable fallocate -z support for SMB3 mounts")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Cc: stable@vger.kernel.org # v3.17
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-06-30 23:17:09 -04:00
..
2019-08-06 19:06:51 +02:00
2020-06-25 15:32:56 +02:00
2019-12-13 08:52:36 +01:00
2018-08-17 16:20:28 -07:00
2019-12-13 08:51:59 +01:00
2018-05-22 14:27:52 -04:00
2018-08-17 16:20:27 -07:00
2018-05-22 14:27:52 -04:00
2020-06-22 09:05:01 +02:00
2018-07-03 16:44:45 -04:00
2018-06-05 19:23:26 +02:00
2020-03-05 16:42:12 +01:00
2020-03-25 08:06:14 +01:00
2018-06-11 08:22:34 -07:00