STRUCT DAMON_FILTER(9)

💖 struct damon_filter(9) 💖

okay so bestie, welcome to the Kernel API Manual page for struct damon_filter(9) — yes that's the manual name, we're being fancy today. This is the DAMON region filter for &struct damon_probe, and it's genuinely iconic, let me tell you everything ✨

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🌸 NAME 🌸

struct damon_filter — the DAMON region filter for &struct damon_probe. That's the whole vibe. Short, sweet, main character energy 🎀

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✨ SYNOPSIS ✨

here's the whole struct, copypasta-exact because we do NOT play with code:

struct damon_filter {
    enum damon_filter_type type;
    bool matching;
    bool allow;
    union {
      u64 memcg_id;
    };
 };

look at her. flawless. no notes 💅

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🦋 Members 🦋

okay so let's meet the members one by one, they all have lore:

• type — Type of the region. that's it, that's the job 💜
• matching — Whether this filter is for the type-matching ones. iykyk 🧚
• allow — Whether the type-matching ones should pass this filter. gatekeeping queen 👑
• {unnamed_union} — anonymous. yeah she's mysterious, she doesn't need a name 🙈
• memcg_id — Memcg id of the question if type is DAMON_FILTER_MEMCG. conditional icon ⭐

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🌈 SEE ALSO 🌈

go read the kernel file ./include/linux/damon.h bestie, and while you're at it, the whole friend group:

• struct damon_addr_range(9)
• struct damon_size_range(9)
• struct damon_region(9)
• struct damon_target(9)
• enum damos_action(9)
• enum damos_quota_goal_metric(9)
• struct damos_quota_goal(9)
• enum damos_quota_goal_tuner(9)
• struct damos_quota(9)
• enum damos_wmark_metric(9)
• struct damos_watermarks(9)
• struct damos_stat(9)
• enum damos_filter_type(9)
• struct damos_filter(9)
• struct damos_walk_control(9)
• struct damos_access_pattern(9)
• struct damos_migrate_dests(9)
• struct damos(9)
• enum damon_ops_id(9)
• struct damon_operations(9)
• struct damon_intervals_goal(9)
• enum damon_filter_type(9)
• struct damon_probe(9)
• struct damon_attrs(9)
• struct damon_ctx(9)

like, the entire extended universe fr fr 🔥

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okay that's the page!! sourced straight from ./include/linux, dated October 2026 — shoutout to the kernel docs girlies, mwah 🫶💖 slay and read your headers, periodt ✨