Subj : [$] Improving the merging of anonymous VMAs
To   : All
From : LWN.net
Date : Mon Mar 31 2025 23:30:08

[$] Improving the merging of anonymous VMAs

Date:
Mon, 31 Mar 2025 22:26:56 +0000

Description:
The virtual memory area (VMA), represented by struct
vm_area_struct , is one of the core abstractions of the kernel's
memory-management subsystem; a VMA represents a portion of a process's
address space with the same characteristics.  A memory-mapped file will be
represented by (at least) one VMA, as will the process's stack or a region
of anonymous memory.  Efficiently managing VMAs and the logic around them
is crucial for good performance overall.  Lorenzo Stoakes focused on one
specific problem area: the merging of anonymous VMAs, during the
memory-management track at the 2025 Linux Storage, Filesystem,
Memory-Management, and BPF Summit.

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Link to news story:
https://lwn.net/Articles/1015762/


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