ext4_group_add_blocks(9)

💅 ext4_group_add_blocks(9) — kernel API manual, but make it make sense

okay so bestie, welcome to the ext4_group_add_blocks(9) page — that's the kernel API manual, section 9, and yes we're reading kernel source docs for fun now, this is who we are 🫶

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✨ NAME ✨

ext4_group_add_blocks — Add given blocks to an existing group 💖

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🌸 SYNOPSIS 🌸

int ext4_group_add_blocks (handle_t *handle , struct super_block *sb ,
ext4_fsblk_t block , unsigned long count );

it's giving "four args, one int, no drama" ✨

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🎀 ARGUMENTS 🎀

• handle — handle to this transaction 🔥 like, the little VIP pass for the whole operation
• sb — super block 👑 the main character itself
• block — start physical block to add to the block group 📍 literally the starting point, no cap
• count — number of blocks to free 🌈 how many we're doing here

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🦋 DESCRIPTION 🦋

okay so here's the whole vibe: this marks the blocks as free in the bitmap and in the buddy. both. not one, not the other — both 💅 that's the entire job description and honestly? iconic.

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🌟 SEE ALSO 🌟

• Kernel file ./fs/ext4/mballoc.c 📁
• ext4_mb_clear_bb(9)
• ext4_free_blocks(9)
• ext4_trim_extent(9)
• ext4_trim_all_free(9)
• ext4_trim_fs(9)

go read the whole friend group, they're all in the same file bestie iykyk 🧚

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that's the page!! brought to you by ./fs/ext4 🌸, dated October 2026 ⭐, and yes it's still called ext4_group_add_blocks(9) — mwah, slay, periodt 💜🎀