take_gc_lnum(9)

take_gc_lnum(9) 🎀

okay so bestie, welcome to the page for take_gc_lnum(9) from the Kernel API Manual — manual name folded in near the top, and yes it's serving ✨.

✨ NAME ✨

take_gc_lnum — reserve GC LEB. periodt 💅

🌸 SYNOPSIS 🌸

int take_gc_lnum (struct ubifs_info *c );

🫶 ARGUMENTS 🫶

• c — UBIFS file-system description object. that's the one and only arg, bestie ✨

🔥 DESCRIPTION 🔥

okay so here's the main character move: take_gc_lnum ensures that the LEB reserved for garbage collection is marked as "taken" in lprops. literally its whole job, and it ate 💅.

We also have to set free space to LEB size and dirty space to zero, because lprops may contain out-of-date information if the file-system was un-mounted before it has been committed. yes bestie, stale lprops info is the villain of this episode 😭.

This function returns zero in case of success and a negative error code in case of failure. zero = slay, negative error = the plot twist 🙈.

🦋 SEE ALSO 🦋

Kernel file ./fs/ubifs/super.c, plus the whole see-also friend group:

• validate_inode(9)
• init_constants_early(9)
• bud_wbuf_callback(9)
• alloc_wbufs(9)
• free_wbufs(9)
• free_orphans(9)
• free_buds(9)
• check_volume_empty(9)
• ubifs_parse_param(9)
• destroy_journal(9)
• bu_init(9)
• check_free_space(9)
• mount_ubifs(9)
• ubifs_umount(9)
• ubifs_remount_rw(9)
• ubifs_remount_ro(9)
• open_ubi(9)

xoxo, your kernel bestie 💖 — source/version ./fs/ubifs, dated October 2026, signing off for take_gc_lnum(9) 🌈.