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Learn about the complex relationship between filesystem operations and memory management in the Linux kernel through this 50-minute conference talk from Kernel Recipes 2025. Explore the intricate challenges that arise when the system needs to reclaim memory from filesystems, which are among the most complicated memory users in the kernel. Discover how memory allocation and reclamation create potential deadlock scenarios when filesystems must allocate memory in order to free memory. Examine existing deadlock avoidance mechanisms that have been developed over time, and understand newly discovered problems where filesystems paradoxically need to allocate memory during the memory reclamation process. Gain insights into current solutions and potential approaches to address these emerging challenges in kernel memory management, presented by Matthew Wilcox, a recognized expert in Linux kernel development.
