Messages in this thread | | | Date | Tue, 21 Jul 2020 14:18:38 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] kernel: add a kernel_wait helper |
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On Tue, 21 Jul 2020 15:04:49 +0200 Christoph Hellwig <hch@lst.de> wrote:
> Add a helper that waits for a pid and stores the status in the passed > in kernel pointer. Use it to fix the usage of kernel_wait4 in > call_usermodehelper_exec_sync that only happens to work due to the > implicit set_fs(KERNEL_DS) for kernel threads.
I guess it's cleaner, although it's a bit sad to be adding code to address a non-problem.
Did you consider a simpler kernel_wait() which just wraps a set_fs(KERNEL_DS) around a call to kernel_wait4()?
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