Tag
block-pointers
- Jun 26, 2026 Copy-on-Write and Block Shadowing Instead of a Log How never modifying a reachable block replaces journal replay with a root pointer swap, and what the tree-copying cost buys in atomicity. filesystems
- Mar 21, 2026 Shadow Paging and Copy-on-Write Trees How writing a modified page to a new location instead of in place makes every update atomic, what the pointer-update protocol must flush, and how the space cost accumulates until a collection pass reclaims it. memory systems
- Jan 5, 2026 Checksum Placement: Block Pointers, Metadata Trees, and Payloads Where a filesystem can store a block checksum, why the pointer is usually the right home for it, and how each placement choice changes what a torn write can do. filesystems