ubifs_find_free_leb_for_idx(9)

🌸 NAME 🌸

ubifs_find_free_leb_for_idx — find a free LEB for the index. 💖

This page is giving Kernel API Manual energy, and bestie, we're getting into finding a free LEB for the index. No cap, that's the whole assignment. 🎀

✨ SYNOPSIS ✨

int ubifs_find_free_leb_for_idx (struct ubifs_info *c );

🫶 ARGUMENTS 🫶

• c — the UBIFS file-system description object. That's the bestie we're passing in. 💅

👑 DESCRIPTION 👑

Okay so ubifs_find_free_leb_for_idx literally looks for a free LEB and returns that LEB number. The returned LEB is marked as "taken", "index". Slay, it's claimed now. ✨

Only empty LEBs are allocated, and there are two reasons for that, bestie:

1. First, the commit calculates the number of LEBs to allocate based on the assumption that they will be empty. So yeah, empty is the assignment. 🫶
2. Secondly, free space at the end of an index LEB is not guaranteed to be empty because it may have been used by the in-the-gaps method prior to an unclean unmount. iykyk 😭

If no LEB is found, -ENOSPC is returned. For other failures another negative error code is returned. That's the error-code tea. ☕

🌈 SEE ALSO 🌈

Kernel file ./fs/ubifs/find.c is the home base, and the related crew is:

• struct scan_data(9)
• valuable(9)
• scan_for_dirty_cb(9)
• scan_for_dirty(9)
• ubifs_find_dirty_leb(9)
• scan_for_free_cb(9)
• do_find_free_space(9)
• ubifs_find_free_space(9)
• scan_for_idx_cb(9)
• scan_for_leb_for_idx(9)
• ubifs_save_dirty_idx_lnums(9)
• scan_dirty_idx_cb(9)
• find_dirty_idx_leb(9)
• get_idx_gc_leb(9)
• find_dirtiest_idx_leb(9)
• ubifs_find_dirty_idx_leb(9)

Okay that's the page, bestie 🫶 source/version: ./fs/ubifs; date: October 2026; manual page: ubifs_find_free_leb_for_idx(9). Mwah 💋