[PATCH RFC POC 03/50] alpha: commit fds on syscall exit

[sashiko-bot at kernel.org]

> Add TIF_FD_SLOTS and test it once the untraced system call has stored
> its result. A task that reserved descriptors calls syscall_trace_leave()
> and joins ret_from_sys_call with the flag gone.
> 
> We mirror the traced error path where the switch stack is set up and the
> return address and the syscall restart state are placed in callee-saved
> registers.
> 
> Btw, let's remove alpha... It's a pain.
> 
> Signed-off-by: Christian Brauner (Amutable) <brauner at kernel.org>

Sashiko has reviewed this patch and found no issues. It looks great!

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