STRUCT UBI_FM_POOL(9)

🦋 struct ubi_fm_pool(9) 🦋

okay bestie, welcome to the Kernel API Manual page for struct ubi_fm_pool(9) — this is the in-memory fastmap pool situation, and it's lowkey iconic. let's get into it 💅

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🌸 NAME 🌸

struct ubi_fm_pool — in-memory fastmap pool

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✨ SYNOPSIS ✨

       struct ubi_fm_pool {
           int pebs[UBI_FM_MAX_POOL_SIZE];
           int used;
           int size;
           int max_size;
        };

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🎀 Members 🎀

• pebs — PEBs in this pool
• used — number of used PEBs
• size — total number of PEBs in this pool
• max_size — maximal size of the pool

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💫 Description 💫

so a pool gets filled with up to max_size. if all PEBs within the pool are used, a new fastmap will be written to the flash and the pool gets refilled with empty PEBs. that's the whole vibe check 🫶

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🔗 SEE ALSO 🔗

Kernel file ./drivers/mtd/ubi/ubi.h — and bestie, you also gotta peek at these:

• struct ubi_vid_io_buf(9)
• struct ubi_wl_entry(9)
• struct ubi_ltree_entry(9)
• struct ubi_rename_entry(9)
• struct ubi_fastmap_layout(9)
• struct ubi_eba_leb_desc(9)
• struct ubi_volume(9)
• struct ubi_volume_desc(9)
• struct ubi_debug_info(9)
• struct ubi_device(9)
• struct ubi_ainf_peb(9)
• struct ubi_ainf_volume(9)
• struct ubi_attach_info(9)
• struct ubi_work(9)
• ubi_init_vid_buf(9)
• ubi_free_vid_buf(9)
• ubi_get_vid_hdr(9)
• ubi_ro_mode(9)
• vol_id2idx(9)
• idx2vol_id(9)
• ubi_is_fm_vol(9)
• ubi_find_fm_block(9)

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mwah 💋 — source/version: ./drivers/mtd/ubi, date: October 2026, title: struct ubi_fm_pool(9). that's the whole footer, bestie 🫶