LKML News v5.7

[PATCH v2 00/16] Introduce kvfree_rcu(1 or 2 arguments) (Uladzislau Rezki)

https://lkml.kernel.org/r/20200525214800.93072-1-urezki@gmail.com

This is the second version of the rcu-protected kvfree().

[PATCH v2 0/7] Add histogram measuring mmap_lock contention latency (Axel Rasmussen)

https://lkml.kernel.org/r/20200528235238.74233-1-axelrasmussen@google.com

For further analysis of the mmap_sem overhead from both kernel space and user space, this commit adds the latency historgram for mmap_sem acquisition time. Actually, mmap_sem is now renamed into mmap_lock, thanks to Michel’s patch.

[PATCH -V4] swap: Reduce lock contention on swap cache from swap slots allocation (Huang, Ying)

https://lkml.kernel.org/r/20200529010840.928819-1-ying.huang@intel.com

Fourth version of the swap slot allocation locking contention reduction patch. Previous version was also introduced in my previous posting.

[PATCH v5 00/39] Large pages in the page cache (Matthew Wilcox)

https://lkml.kernel.org/r/20200529025824.32296-1-willy@infradead.org

Fifth version of the page cache large pages work. The previous version was also introduced in my previous posting. It passes a little more test cases in xfstests than v4 did, but seems it still not entirely passes.

Linux 5.7

https://lkml.kernel.org/r/CAHk-=wiZGrCkiBB1V7bxp8NZH6yWi9mPM4ptMW16OzOiNprBFA@mail.gmail.com

Nothing worrisome happend, and therefore 5.7 has released, as expected. In other words, the merge window for 5.8 is open.