ext4_mb_clear_bb(9)

💖 ext4_mb_clear_bb(9) — Kernel API Manual 💖

okay so bestie, we're in the Kernel API Manual today and the star of the show is ext4_mb_clear_bb 😌✨ she's a little function with main character energy and honestly? she carries the whole block-freeing operation on her back, no cap.

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🎀 NAME 🎀

ext4_mb_clear_bb — a helper function for freeing blocks. She's the one ext4_free_blocks() hits up when it needs the job done 🫶

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✨ SYNOPSIS ✨

void ext4_mb_clear_bb (handle_t *handle , struct inode *inode ,
ext4_fsblk_t block , unsigned long count , int flags );

look at her. five parameters. zero notes. she knows exactly who she is 💅

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🌸 ARGUMENTS 🌸

• handle — the handle for this transaction. like, the whole receipt of what's going down rn 🧾
• inode — an inode. that's it, that's the description. iconic minimalism honestly 😭
• block — the starting physical block to be freed. this is where the freeing begins, bestie 📍
• count — the number of blocks to be freed. so like, how many we're sending off 🦋
• flags — the flags used by ext4_free_blocks. the little vibe settings that tell everyone how to behave 🎀

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👑 SEE ALSO 👑

• Kernel file ./fs/ext4/mballoc.c
• ext4_free_blocks(9)
• ext4_group_add_blocks(9)
• ext4_trim_extent(9)
• ext4_trim_all_free(9)
• ext4_trim_fs(9)

the whole friend group fr fr, they all show up in the same file and they all ate 🔥

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lowkey a reminder that she's a helper — ext4_free_blocks() is the one calling her, she's not out here doing solo missions 🌈

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mwah, that's the page! 💜 this little number comes to you from ./fs/ext4, stamped October 2026, filed under ext4_mb_clear_bb(9) — go off and free those blocks responsibly, bestie, ily 🫶✨🎀