goldfish: fix loop driver compat mode ioctl
BUG: 146580512
Test: build x86_64 ranchu kernel
boot sdk_phone_x86-userdebug with avb on
Combining the following cls:
go/oag/777015
Author: Evan Green <evgreen@chromium.org>
Date: Mon Jul 2 16:03:46 2018 -0700
loop: Add LOOP_SET_BLOCK_SIZE in compat ioctl
This change adds LOOP_SET_BLOCK_SIZE as one of the supported ioctls
in lo_compat_ioctl. It only takes an unsigned long argument, and
in practice a 32-bit value works fine.
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Evan Green <evgreen@chromium.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Author: Alessio Balsini <balsini@android.com>
Date: Wed Aug 7 01:48:28 2019 +0100
loop: Add LOOP_SET_DIRECT_IO to compat ioctl
Enabling Direct I/O with loop devices helps reducing memory usage by
avoiding double caching. 32 bit applications running on 64 bits systems
are currently not able to request direct I/O because is missing from the
lo_compat_ioctl.
This patch fixes the compatibility issue mentioned above by exporting
LOOP_SET_DIRECT_IO as additional lo_compat_ioctl() entry.
The input argument for this ioctl is a single long converted to a 1-bit
boolean, so compatibility is preserved.
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Alessio Balsini <balsini@android.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Bo Hu <bohu@google.com>
Change-Id: I99a82d9f1d1c6ab16c13d96e7ce5838bdec507ff
1 file changed
