grow_bit_array(9)

🌸 grow_bit_array(9) 🌸

okay so real talk, bestie — this is a page straight out of the Kernel API Manual, and it's all about grow_bit_array. yes, that's a function name and a whole vibe. let's get into it 💅

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✨ NAME ✨

grow_bit_array — re-allocate the bitmap word array so there will more instance numbers that can be allocated.

(and yes, the grammar of that sentence is exactly what the kernel gave us. we don't fix it. we respect it. periodt 💀)

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🦋 SYNOPSIS 🦋

int grow_bit_array (void );

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🎀 ARGUMENTS 🎀

• void — no arguments. nothing. nada. she takes zero input and she's thriving. 🫶

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⭐ DESCRIPTION ⭐

okay so here's the tea: the array starts out as NULL. like, literally nothing there at first. 🫥

so this function is doing double duty, and honestly? main character energy. since the array is initially NULL, this also initializes the array the very first time we allocate an instance number. first call = glow-up from nothing. iconic. 👑

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🔥 RETURN 🔥

• VDO_SUCCESS — slay, it worked 💖
• or an error code from the allocation — not slay, something went wrong 😭

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🌈 SEE ALSO 🌈

bestie this list is long, so buckle in. all of these live in the kernel file ./drivers/md/dm-vdo/dm-vdo-target.c:

• free_device_config(9)
• get_version_number(9)
• parse_bool(9)
• parse_memory(9)
• parse_slab_size(9)
• process_one_thread_config_spec(9)
• parse_one_thread_config_spec(9)
• parse_thread_config_string(9)
• process_one_key_value_pair(9)
• parse_one_key_value_pair(9)
• parse_key_value_pairs(9)
• parse_optional_arguments(9)
• handle_parse_error(9)
• parse_device_config(9)
• get_thread_id_for_phase(9)
• advance_phase(9)
• finish_operation_callback(9)
• decode_from_super_block(9)
• decode_vdo(9)
• pre_load_callback(9)
• get_bit_array_size(9)
• allocate_instance(9)
• check_may_grow_physical(9)
• grow_layout(9)
• validate_new_device_config(9)
• write_super_block_for_suspend(9)
• suspend_callback(9)
• was_new(9)
• requires_repair(9)
• get_load_type(9)
• load_callback(9)
• handle_load_error(9)
• write_super_block_for_resume(9)
• resume_callback(9)
• grow_logical_callback(9)
• handle_logical_growth_error(9)
• perform_grow_logical(9)
• copy_partition(9)
• grow_physical_callback(9)
• handle_physical_growth_error(9)
• perform_grow_physical(9)
• apply_new_vdo_configuration(9)

like I said. a lot of friends. iykyk 🧚

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ngl, that's the whole page. go forth and grow that bit array, bestie 🌱💜

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and that's a wrap!! this lil page came from ./drivers/md/dm-vdo, dated October 2026, and the whole thing is filed under grow_bit_array(9). mwah, bye 🍓✨