folio_lock_killable(9)

💅 folio_lock_killable(9)

okay so bestie, this one is straight from the Kernel API Manual, and it’s giving “lock the folio, but make the sleep interruptible by a fatal signal” 💖

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✨ NAME ✨

folio_lock_killable — lock this folio, interruptible by a fatal signal. 🎀

🦋 SYNOPSIS 🦋

int folio_lock_killable (struct folio *folio );

🌸 ARGUMENTS 🌸

• folio — the folio to lock. 🫶

💜 DESCRIPTION 💜

Attempts to lock the folio, like folio_lock, except that the sleep to acquire the lock is interruptible by a fatal signal. 😭✨

So yeah: same lock energy as folio_lock, but the little sleep can get interrupted by a fatal signal. That’s the whole vibe. 💅

🧚 CONTEXT 🧚

May sleep; see folio_lock. 😴

👑 RETURN 👑

• 0 — the lock was acquired, slay. 👑
• -EINTR — a fatal signal was received. 💀

🌈 SEE ALSO 🌈

Kernel file ./include/linux/pagemap.h and the whole friend group:

• 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)
• 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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made with 💖 from source/version ./include/linux, dated October 2026, and filed under folio_lock_killable(9) — byeee 🎀✨