STRUCT NILFS_CPMODE(9)

💖 NAME 💖

struct nilfs_cpmode — the change checkpoint mode structure, bestie. it's giving "tiny struct, big job" ✨

so this page lives in the Kernel API Manual (yes that's the manual name, we're fancy here 👑) and it's all about one little struct that carries a checkpoint number and a mode. short and iconic. periodt.

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🌸 SYNOPSIS 🌸

okay so here's the whole thing, and yes it's literally this small, no cap:

struct nilfs_cpmode {
    __u64 cm_cno;
    __u32 cm_mode;
    __u32 cm_pad;
 };

look at her. three fields. zero drama. main character energy fr fr 💅

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🎀 Members 🎀

• cm_cno — the checkpoint number 🦋 this is the __u64 one, she's the big sister of the group
• cm_mode — the mode of checkpoint 🌸 a __u32, and yes it's exactly what it sounds like
• cm_pad — padding 💀 the humble little __u32 that's just here to keep things lined up. we love a supportive icon

ngl, every field keeps its exact type — __u64 for cm_cno, __u32 for cm_mode, __u32 for cm_pad. don't go switching them around, that's not the vibe 🙈

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⭐ SEE ALSO ⭐

the whole friend group 👑 these are all in the kernel file ./include/uapi/linux/nilfs2_api.h, and honestly? they're all slaying in their own way:

• struct nilfs_cpinfo(9)
• struct nilfs_suinfo(9)
• struct nilfs_suinfo_update(9)
• struct nilfs_argv(9)
• struct nilfs_period(9)
• struct nilfs_cpstat(9)
• struct nilfs_sustat(9)
• struct nilfs_vinfo(9)
• struct nilfs_vdesc(9)
• struct nilfs_bdesc(9)

go read them, iykyk 💖

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okay that's the whole page and you ate it up 🫶 this one comes to you straight from ./include/uapi/linux, dated October 2026 — like, the future?? she's ahead of her time. see you in the next manpage bestie, mwah 💋🎀