folio_next_index(9)

✨ folio_next_index — the kernel API manual, bestie edition ✨

okay so picture this: you're deep in folio_next_index(9) from the Kernel API Manual, and honestly? it's a tiny little legend and I'm obsessed 🫶

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💖 NAME 💖

folio_next_index — literally gets you the index of the next folio. that's it. that's the whole job. iconic behaviour, no notes 💅

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🌸 SYNOPSIS 🌸

pgoff_t folio_next_index (const struct folio *folio );

like look at that signature. clean. minimal. giving main character energy ✨

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🎀 ARGUMENTS 🎀

• folio — the current folio, aka the one you're standing on right now bestie 👑

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🦋 RETURN 🦋

it hands you back the index of the folio that follows this folio in the file. so basically "who's next?" and it just tells you, no cap 💖

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🌈 SEE ALSO 🌈

okay this list is LONG, like a group chat where everyone's typing at once 😭 but every single one of these cuties is from the Kernel file ./include/linux/pagemap.h, and here they all are, not skipping a single one:

• filemap_set_wb_err(9)
• filemap_check_wb_err(9)
• filemap_sample_wb_err(9)
• file_sample_sb_err(9)
• mapping_set_error(9)
• mapping_set_large_folios(9)
• mapping_align_index(9)
• mapping_pmd_folio_support(9)
• folio_flush_mapping(9)
• folio_inode(9)
• folio_attach_private(9)
• folio_change_private(9)
• folio_detach_private(9)
• fgf_t(9)
• fgf_set_order(9)
• write_begin_get_folio(9)
• filemap_get_folio(9)
• filemap_lock_folio(9)
• filemap_grab_folio(9)
• find_get_page(9)
• find_lock_page(9)
• find_or_create_page(9)
• grab_cache_page_nowait(9)
• folio_next_pos(9)
• folio_file_page(9)
• folio_contains(9)
• page_pgoff(9)
• folio_pos(9)
• linear_page_delta(9)
• linear_page_index(9)
• linear_anon_page_index(9)
• folio_trylock(9)
• folio_lock(9)
• lock_page(9)
• folio_lock_killable(9)
• filemap_range_needs_writeback(9)
• struct readahead_control(9)
• page_cache_sync_readahead(9)
• page_cache_async_readahead(9)
• readahead_folio(9)
• readahead_pos(9)
• readahead_length(9)
• readahead_index(9)
• readahead_count(9)
• readahead_batch_length(9)
• folio_mkwrite_check_truncate(9)
• i_blocks_per_folio(9)

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bestie this page is one function, one argument, one return value. short and sweet and honestly? we love a low-maintenance icon 💀

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and that's the whole vibe check 💜 this legend lives over in ./include/linux, dated October 2026, and it's filed under folio_next_index(9) in the Kernel API Manual — periodt, that's the sign-off 🎀✨🌸