On Thu, Jun 15, 2017 at 03:03:41PM +0100, Dave P Martin wrote: > This patch factors out the allocator for signal frame optional > records into a separate function, to ensure consistency and > facilitate later expansion. > > No overrun checking is currently done, because the allocation is in > user memory and anyway the kernel never tries to allocate enough > space in the signal frame yet for an overrun to occur. This > behaviour will be refined in future patches. > > The approach taken in this patch to allocation of the terminator > record is not very clean: this will also be replaced in subsequent > patches. > > For future extension, a comment is added in sigcontext.h > documenting the current static allocations in __reserved[]. This > will be important for determining under what circumstances > userspace may or may not see an expanded signal frame. > > Signed-off-by: Dave Martin <Dave.Martin@xxxxxxx> Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>
