Re: [PATCH] target: Allow userspace to write 1 to attrib/emulate_fua_write

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Andy,

On Tue, 2015-03-31 at 15:04 -0700, Andy Grover wrote:
> Before 4.0, reading attrib/emulate_fua_write has returned 1. Saved
> configs created on a pre-4.0 kernel will try to write that back when
> restoring LIO configuration. This should succeed with no effect,
> and issue a warning.
> 
> See https://bugzilla.redhat.com/show_bug.cgi?id=1206184
> 
> Reported-by: Yanko Kaneti <yaneti@xxxxxxxxxxx>
> Reported-by: Juan Quintela <quintela@xxxxxxxxxx>
> Signed-off-by: Andy Grover <agrover@xxxxxxxxxx>
> ---
>  drivers/target/target_core_device.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
> index 79b4ec3..7faa6ae 100644
> --- a/drivers/target/target_core_device.c
> +++ b/drivers/target/target_core_device.c
> @@ -781,8 +781,8 @@ int se_dev_set_emulate_fua_write(struct se_device *dev, int flag)
>  	}
>  	if (flag &&
>  	    dev->transport->get_write_cache) {
> -		pr_err("emulate_fua_write not supported for this device\n");
> -		return -EINVAL;
> +		pr_warn("emulate_fua_write not supported for this device, ignoring\n");
> +		return 0;
>  	}
>  	if (dev->export_count) {
>  		pr_err("emulate_fua_write cannot be changed with active"

This patch does not apply against target-pending/for-next code.

Note this particular check was already dropped in >= v3.19-rc1:

target: Drop left-over PHBA_PDEV set attr checks
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/target/target_core_device.c?id=4b2f57e5ced40e91cbf8886d7dc40a9474d2f5c0

Thanks,

--nab

--
To unsubscribe from this list: send the line "unsubscribe target-devel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux SCSI]     [Kernel Newbies]     [Linux SCSI Target Infrastructure]     [Share Photos]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Linux IIO]     [Device Mapper]

  Powered by Linux