readahead_batch_length(9)

💅 readahead_batch_length — from the Kernel API Manual, bestie

Okay so picture this: you're deep in readahead_batch_length(9) territory, and this little icon of a function is here to tell you the number of bytes in the current batch. That's it. That's the whole vibe. She's not complicated, she's just useful ✨

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🌸 NAME 🌸

readahead_batch_length — literally just the number of bytes in the current batch, no cap 🫶

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🎀 SYNOPSIS 🎀

size_t readahead_batch_length (const struct readahead_control *rac );

Like, you hand her one pointer and she hands you a size_t back. Balanced. Symmetrical. Main character energy 🔥

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🦋 ARGUMENTS 🦋

• rac — the readahead request itself, aka the whole const struct readahead_control * situation. This is the thing you're asking about, so like… don't forget to pass it 💖

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🌈 SEE ALSO 🌈

She runs with a huge friend group, and honestly? Every single one of them matters. First up, the neighbourhood: the Kernel file ./include/linux/pagemap.h. Then the whole crew 👑

• 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_index(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)
• folio_mkwrite_check_truncate(9)
• i_blocks_per_folio(9)

Not one of these got left out, bestie — the whole group chat is invited 💀

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✨ that's the page ✨ brought to you straight from ./include/linux, dated October 2026, and signed readahead_batch_length(9) — mwah, go read your kernel docs, ily 🧚💜