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[$] Sharing memory for shared file extents

On the second day of the
2022 Linux Storage,
Filesystem, Memory-management and BPF Summit (LSFMM), Goldwyn Rodrigues
led a
combined filesystem and memory-management session on saving memory when
reading files that share extents. That kind of sharing can occur with
copy-on-write (COW) filesystems, reflinks, snapshots, and other features
of t

Link: lwn.net/Articles/895907/

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