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Baolu
On 03/25/2016 10:58 AM, Lu Baolu wrote:
> From: Hans de Goede <hdegoede@xxxxxxxxxx>
>
> The uas driver can never queue more then MAX_CMNDS (- 1) tags and tags
> are shared between luns, so there is no need to claim that we can_queue
> some random large number.
>
> Not claiming that we can_queue 65536 commands, fixes the uas driver
> failing to initialize while allocating the tag map with a "Page allocation
> failure (order 7)" error on systems which have been running for a while
> and thus have fragmented memory.
>
> Cc: stable@xxxxxxxxxxxxxxx
> Reported-and-tested-by: Yves-Alexis Perez <corsac@xxxxxxxxxx>
> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> ---
> drivers/usb/storage/uas.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
> index 44b096c..13e4cc3 100644
> --- a/drivers/usb/storage/uas.c
> +++ b/drivers/usb/storage/uas.c
> @@ -836,7 +836,7 @@ static struct scsi_host_template uas_host_template = {
> .slave_configure = uas_slave_configure,
> .eh_abort_handler = uas_eh_abort_handler,
> .eh_bus_reset_handler = uas_eh_bus_reset_handler,
> - .can_queue = 65536, /* Is there a limit on the _host_ ? */
> + .can_queue = MAX_CMNDS,
> .this_id = -1,
> .sg_tablesize = SG_NONE,
> .skip_settle_delay = 1,
--
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