Messages in this thread |  | | Date | Sat, 21 Apr 2018 02:07:22 -0700 | From | Christoph Hellwig <> | Subject | Re: [PATCH net-next 0/4] mm,tcp: provide mmap_hook to solve lockdep issue |
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On Fri, Apr 20, 2018 at 08:55:38AM -0700, Eric Dumazet wrote: > This patch series provide a new mmap_hook to fs willing to grab > a mutex before mm->mmap_sem is taken, to ensure lockdep sanity. > > This hook allows us to shorten tcp_mmap() execution time (while mmap_sem > is held), and improve multi-threading scalability.
Missing CC to linu-fsdevel and linux-mm that will have to decide.
We've rejected this approach multiple times before, so you better make a really good argument for it.
introducing a multiplexer that overloads a single method certainly doesn't help making that case.
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