nilfs_mdt_forget_block(9)

💖 NAME 💖

Okay bestie, welcome to nilfs_mdt_forget_block(9) — this one lives in the Kernel API Manual. The name says it all: nilfs_mdt_forget_block — discard dirty state and try to remove the page. It's giving cleanup-era main character energy ✨

✨ SYNOPSIS ✨

int nilfs_mdt_forget_block (struct inode *inode , unsigned long block );

🎀 ARGUMENTS 🎀

• inode — the inode of the meta data file. Yep, that meta data file.
• block — block offset. That's the spot we're talking about.

🦋 DESCRIPTION 🦋

So here's the vibe: nilfs_mdt_forget_block clears a dirty flag of the specified buffer, and then it tries to release the page that includes the buffer from a page cache. Lowkey it's doing a little "forget this block's dirty era and see if the page can bounce" situation 💅

No cap, that's the whole move: clear the dirty flag, then try to release the page including the buffer from the page cache.

🔥 RETURN 🔥

On success you get 0, iconic. On failure you get one of these negative error codes, fr fr:

• -EBUSY — Page has an active buffer.
• -ENOENT — Page cache has no page addressed by the offset.

🌈 SEE ALSO 🌈

Kernel file ./fs/nilfs2/mdt.c plus these function besties:

• nilfs_mdt_get_block(9)
• nilfs_mdt_find_block(9)
• nilfs_mdt_delete_block(9)
• nilfs_mdt_clear(9)
• nilfs_mdt_destroy(9)
• nilfs_mdt_setup_shadow_map(9)
• nilfs_mdt_save_to_shadow_map(9)
• nilfs_mdt_restore_from_shadow_map(9)
• nilfs_mdt_clear_shadow_map(9)

Byeee 💜 — source/version: ./fs/nilfs2; date: October 2026; page: nilfs_mdt_forget_block(9). Slay and stay safe out there 🫶