async_raid6_datap_recov(9)

💜 async_raid6_datap_recov(9) 💜

okay bestie, so we're in the Kernel API Manual today, and no this isn't a drill — this is the literal page for async_raid6_datap_recov(9) and it's honestly kind of iconic. 🎀

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✨ NAME ✨

async_raid6_datap_recov — asynchronously calculate a data and the 'p' block 🦋

like, read that again. it does two things at once. main character energy fr fr.

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🌸 SYNOPSIS 🌸

struct dma_async_tx_descriptor * async_raid6_datap_recov (int disks ,
       size_t bytes , int faila , struct page **blocks , unsigned int *offs ,
       struct async_submit_ctl *submit );

look at that signature. she's long, she's thorough, she returns a struct dma_async_tx_descriptor *. we love a return type that actually tells you something. 💅

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🫶 ARGUMENTS 🫶

okay so here's the whole cast — every single one of them, no cuts:

• disks — number of disks in the RAID-6 array. yes, all of them. count them. 👑
• bytes — block size. the actual size of the block, in bytes. that's it, that's the whole thing. ✨
• faila — failed drive index. this is the one that ghosted us and now we're over here doing recovery. 😭
• blocks — array of source pointers where the last two entries are p and q. that's the important bit — p and q live at the end, don't come for me if you get the order wrong. 🔥
• offs — array of offset for pages in blocks. matches up with blocks, one offset per page. ⭐
• submit — submission/completion modifiers. the little knobs for how this all gets submitted and marked done. 🎀

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🌈 SEE ALSO 🌈

• Kernel file ./crypto/async_tx/async_raid6_recov.c — go read the source, iykyk 👀
• async_raid6_2data_recov(9) — her sister function, also slaying in her own way 💖

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ngl this one has a tiny call — six args, one return, and p and q chillin' at the end of blocks. don't overthink it, bestie. 🧚

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and that's the whole page! shoutout to the source/version line ./crypto/async_tx and the date October 2026, from the Kernel API Manual — see you in the next one, mwah 💋💜