s390: TASK_SIZE for kernel threads

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Return a sensible value if TASK_SIZE if called from a kernel thread.

This gets us around an issue with copy_mount_options that does a magic
size calculation "TASK_SIZE - (unsigned long)data" while in a kernel
thread and data pointing to kernel space.

Cc: <stable@vger.kernel.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Martin Schwidefsky 2017-02-24 07:43:51 +01:00

parent 2793784307

commit fb94a687d9

1 changed files with 2 additions and 1 deletions

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arch/s390/include/asm/processor.h

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