STRUCT UBIFS_LPT_LPROPS(9)

💅 struct ubifs_lpt_lprops(9) 💅

okay bestie, welcome to the Kernel API Manual — this is the page for struct ubifs_lpt_lprops, which literally just means LPT logical eraseblock properties 🎀 (LPT = LPT, you already know, iykyk). It's one of those little structs that lives in ./fs/ubifs and just holds the vibe check numbers for a logical eraseblock. no cap.

✨ SYNOPSIS ✨

struct ubifs_lpt_lprops {
    int free;
    int dirty;
    unsigned tgc:1;
    unsigned cmt:1;
 };

that's the whole thing. four members. she's compact. she's iconic. 🦋

🌸 MEMBERS 🌸

• free — how much free space is chilling in there, counted in bytes. 💖
• dirty — how much dirty space is sitting in there, also in bytes. yes it's the messier sibling, we don't judge 🙈
• tgc — the trivial GC flag. it's a single bit, and 1 means "unmap after commit end". so if she's set, she gets unmapped once the commit finishes. periodt. ✨
• cmt — the commit flag. also a single bit, and 1 means "reserved for commit". so like, hands off, it's booked. 💅

fr fr both tgc and cmt are unsigned bitfields of exactly :1 — one bit each, no more, no less. do not come for them.

👑 SEE ALSO 👑

all the neighbors in Kernel file ./fs/ubifs/ubifs.h — go say hi, they're all linked up and honestly the whole friend group is giving main character energy 🌈:

• struct ubifs_old_idx(9)
• struct ubifs_scan_node(9)
• struct ubifs_scan_leb(9)
• struct ubifs_gced_idx_leb(9)
• struct ubifs_inode(9)
• struct ubifs_unclean_leb(9)
• struct ubifs_lprops(9)
• struct ubifs_lp_stats(9)
• struct ubifs_cnode(9)
• struct ubifs_pnode(9)
• struct ubifs_nbranch(9)
• struct ubifs_nnode(9)
• struct ubifs_lpt_heap(9)
• struct ubifs_wbuf(9)
• struct ubifs_bud(9)
• struct ubifs_jhead(9)
• struct ubifs_zbranch(9)
• struct ubifs_znode(9)
• struct bu_info(9)
• struct ubifs_node_range(9)
• struct ubifs_compressor(9)
• struct ubifs_budget_req(9)
• struct ubifs_orphan(9)
• struct ubifs_mount_opts(9)
• struct ubifs_budg_info(9)
• struct ubifs_stats_info(9)
• struct ubifs_info(9)
• ubifs_check_hash(9)
• ubifs_check_hmac(9)
• ubifs_branch_hash(9)
• ubifs_copy_hash(9)
• ubifs_auth_node_sz(9)

and that's the whole page, bestie 🫶 go read the source, it's living at ./fs/ubifs — this drop is from October 2026, straight outta the Kernel API Manual, and the header/footer both rep struct ubifs_lpt_lprops(9) 💜 slay, bye! 🧚🍓