blk_fill_rwbs(9)

✨ blk_fill_rwbs(9) ✨

okay so bestie, we're in the Kernel API Manual and this little icon is blk_fill_rwbs(9) — it's giving "turn the operation into a cute little character string" energy, and honestly? obsessed. 💅

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🌸 NAME 🌸

blk_fill_rwbs — fill the buffer rwbs by mapping op to character string. no cap, that's the whole vibe. ✨

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🎀 SYNOPSIS 🎀

void blk_fill_rwbs (char *rwbs , blk_opf_t opf );

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🦋 ARGUMENTS 🦋

• rwbs — buffer to be filled. it's the little container getting the glow-up 💖
• opf — request operation type (REQ_OP_XXX) and flags for the tracepoint. yes ma'am, both the op and the flags are in the mix 🫶

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💜 DESCRIPTION 💜

Maps each request operation and flag to a single character and fills the buffer provided by the caller with resulting string.

literally that's it — each op/flag gets mapped to one character, and the caller's buffer gets filled with the resulting string. iconic behavior, fr fr. 🌈

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👑 SEE ALSO 👑

• Kernel file ./kernel/trace/blktrace.c
• blk_trace_ioctl(9)
• blk_trace_shutdown(9)
• blk_add_trace_rq(9)
• blk_add_trace_bio(9)
• blk_add_trace_bio_remap(9)
• blk_add_trace_rq_remap(9)
• blk_add_driver_data(9)

go read those if you want the full lore, iykyk 📚✨

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source vibes: ./kernel/trace · dated October 2026 · page blk_fill_rwbs(9) — mwah, bye bestie 💋🎀💖