On Fri, Feb 9, 2018 at 4:15 AM, KarimAllah Ahmed <karahmed@xxxxxxxxxx> wrote:
> Can you elaborate a bit? I do not really understand what is the concern.
I can't find the posting that gave me this impression. The only thing
I can find is the following in Documentation/vm/highmem.txt:
(*) kmap(). This permits a short duration mapping of a single page. It needs
global synchronization, but is amortized somewhat. It is also prone to
deadlocks when using in a nested fashion, and so it is not recommended for
new code.
What constitutes a "short duration," and does this new usage qualify?
