Welcome to the LWN.net Weekly Edition for May 12, 2022 [LWN.net]

This edition contains wall-to-wall coverage from the 2022 Linux Storage, Filesystem, Memory-Management, and BPF Summit, including:

Dealing with negative dentries: how the kernel can manage the cache of file-name lookup failures better.
Recent RCU changes: a quick overview of read-copy-update (RCU) followed by descriptions of some of the bigger changes that have gone into it over the last few years.
How to cope with hardware-poisoned page-cache pages: What should the kernel do when memory errors corrupt a page in the page cache?
Page pinning and filesystems: this year's discussion on how to solve the problems with get_user_pages().
Ways to reclaim unused page-table pages: a lot of the memory used to hold page tables is not needed in that role and could be put to better uses.
The ongoing search for mmap_lock scalability: the 2022 version of the perennial page-fault scalability topic, perhaps with some solutions on the horizon this time.
Improving memory-management documentation: how to capture some of the "tribal knowledge" behind memory management and make it available to more developers.
The state of memory-management development: : Andrew Morton describes some changes to how memory-management patches are handled.
Seeking an API for protection keys supervisor: protection keys can help to harden the kernel, but the best way of managing them is still unclear.
Better tools for out-of-memory debugging: understanding out-of-memory problems is not easy; what can be done to improve the situation?
Changing filesystem resize patterns: filesystems that are created small, but continually resized to be much larger, are causing some headaches.

This week's edition also includes these inner pages:

Brief items: Brief news items from throughout the community.
Announcements: Newsletters, conferences, security updates, patches, and more.

Please enjoy this week's edition, and, as always, thank you for supporting LWN.net.