file_sample_sb_err(9)

💅 file_sample_sb_err(9) — Kernel API Manual ✨

okay bestie, welcome to the file_sample_sb_err page, section 9 of the Kernel API Manual 🎀 it's short, it's sweet, and it's lowkey important — let's get into it 🫶

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🌸 NAME 🌸

file_sample_sb_err — sample the current errseq_t to test for later errors ✨

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💖 SYNOPSIS 💖

errseq_t file_sample_sb_err (struct file *file );

that's it. that's the whole signature. iconic behaviour, no notes 💅

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🦋 ARGUMENTS 🦋

• file — file pointer to be sampled 🎀

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🧚 DESCRIPTION 🧚

so what does it actually do? it grabs the most current superblock-level errseq_t value for the given struct file. that's the whole vibe — you take a sample of the error sequence right now, and later you can check it to see if any errors happened in the meantime 👑

fr fr, that's it. no cap, no hidden extras 🌈

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🔥 SEE ALSO 🔥

bestie, they really went off with this list, so buckle up 🍓 — Kernel file ./include/linux/pagemap.h, filemap_set_wb_err(9), filemap_check_wb_err(9), filemap_sample_wb_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), readahead_batch_length(9), folio_mkwrite_check_truncate(9), i_blocks_per_folio(9) 💀

like, that's a whole friend group and file_sample_sb_err is the main character of it, iykyk 💜

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🎀 tiny reminder bestie: everything you just read lives under ./include/linux — go touch some source code, it's good for you 🌸

and that's the page!! mwah 💋 this one came from ./include/linux, dated October 2026, and yes the manual is literally called file_sample_sb_err(9) — slay, periodt 👑✨