Christoph Hellwig 37c54f9bd4 kernel: set USER_DS in kthread_use_mm ... Some architectures like arm64 and s390 require USER_DS to be set for kernel threads to access user address space, which is the whole purpose of kthread_use_mm, but other like x86 don't. That has lead to a huge mess where some callers are fixed up once they are tested on said architectures, while others linger around and yet other like io_uring try to do "clever" optimizations for what usually is just a trivial asignment to a member in the thread_struct for most architectures. Make kthread_use_mm set USER_DS, and kthread_unuse_mm restore to the previous value instead. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: Jens Axboe <axboe@kernel.dk> Reviewed-by: Jens Axboe <axboe@kernel.dk> Acked-by: Michael S. Tsirkin <mst@redhat.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Felipe Balbi <balbi@kernel.org> Cc: Felix Kuehling <Felix.Kuehling@amd.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Zhenyu Wang <zhenyuw@linux.intel.com> Cc: Zhi Wang <zhi.a.wang@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: http://lkml.kernel.org/r/20200404094101.672954-7-hch@lst.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2020-06-10 19:14:18 -07:00
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atm
c67x00
cdns3
chipidea
class
common
core	USB/PHY driver updates for 5.8-rc1	2020-06-07 09:42:16 -07:00
dwc2
dwc3
early
gadget	kernel: set USER_DS in kthread_use_mm	2020-06-10 19:14:18 -07:00
host	USB/PHY driver updates for 5.8-rc1	2020-06-07 09:42:16 -07:00
image
isp1760
misc
mon
mtu3
musb
phy
renesas_usbhs
roles
serial
storage
typec	USB/PHY driver updates for 5.8-rc1	2020-06-07 09:42:16 -07:00
usbip
Kconfig
Makefile
usb-skeleton.c