readahead_pos(9)

💅 readahead_pos(9) — Kernel API Manual ✨

okay bestie, welcome to the Kernel API Manual 💖. we're doing a tiny little vibe check on readahead_pos(9), and honestly? it's giving “short but important.” no cap.

🎀 NAME 🎀

readahead_pos — the byte offset into the file of this readahead request. literally that's the whole thing, and it ate. 💅

✨ SYNOPSIS ✨

loff_t readahead_pos (const struct readahead_control *rac );

copy that exactly, bestie — spaces and all 🫶.

🦋 ARGUMENTS 🦋

• rac — the readahead request. that's the const struct readahead_control * in the mix, and it's lowkey the main character here. 🫶

🌈 SEE ALSO 🌈

bestie, the Kernel file for this one is ./include/linux/pagemap.h, and the whole crew is right here. iykyk 💫

• 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_length(9)
• readahead_index(9)
• readahead_count(9)
• readahead_batch_length(9)
• folio_mkwrite_check_truncate(9)
• i_blocks_per_folio(9)

xoxo, your kernel bestie 💅 — this page lives in ./include/linux, was dated October 2026, and it's readahead_pos(9) down to the last line. periodt. 💖