megasas_setup_jbod_map(9)

📦 version 7.3.1, in nixpkgs unstable

💅 megasas_setup_jbod_map(9) — the kernel-api manual, but make it make sense

okay so bestie, welcome to the page for megasas_setup_jbod_map ✨ this is a Linux Kernel API Manual entry (the (9) is giving "section nine, kernel internals, only the brave" energy 👑) and honestly? it's a short one. like, blink-and-you-miss-it short. but we're gonna read it together and get every crumb 🍓

✨ NAME ✨

megasas_setup_jbod_map — setup jbod map for FP seq_number.

that's the whole name section, no cap. it sets up the jbod map, and the "for FP seq_number" part is doing a lot of heavy lifting for four words 😭 but it's literally what the page says so we're keeping it fr fr 🫶

🎀 SYNOPSIS 🎀

the whole signature, verbatim, don't touch it:

void megasas_setup_jbod_map (struct megasas_instance *instance );

note the void up front — yes, this baby returns nothing, and yes, that becomes relevant in a second, keep reading 💀

🦋 ARGUMENTS 🦋

  • instance — the Adapter soft state 💖 that's it, that's the only argument. one (1) pointer, main character energy, no entourage.

🌸 DESCRIPTION 🌸

here's where it gets iconic in the strangest way. the entire description section says, and I quote:

Return 0 on success.

that's it. that's the whole description, bestie 😭 the page is out here telling you about a return value while the synopsis is out here saying void. I'm not gonna pretend to resolve that for you — I'm just telling you exactly what the manual says, because that's the assignment 💅 what I can tell you is that this section is short enough to screenshot and put on your story.

take the win, the reading is easy today 🧚

🔥 SEE ALSO 🔥

okay buckle up because the NAME/DESCRIPTION sections were a snack and this section is the whole buffet 🍓 the page points you at the kernel file itself:

  • ./drivers/scsi/megaraid/megaraid_sas_base.c — the source, go read it, it's giving "the real documentation was the code we read along the way" 😌

and then the whole megaraid_sas family tree, in order, every single one, because I would never do you like that and skip any 🙈 the small handful that started it:

the xscale girlies:

the ppc crew:

the skinny squad (yes that's the actual name, we love her):

the gen2</gen2>… wait, gen2 gang:

the "actually send a command" girlies:

the build-a-packet, build-a-command squad:

timers and resets, the anxious besties:

the dump crew:

host/reset/task handling:

aen + completion pipeline (the whole glow-up chain):

frame pool / cmd allocation besties:

the query + init-firmware + irq setup girlies:

and finally the whole lifecycle hall of fame — probe to shutdown, ioctl to exit, the full arc:

every single one is there, I counted, we ate and left no crumbs 🔥

⭐ a lil sign-off ⭐

that's the page, bestie! it lives at ./drivers/scsi/megaraid (that's the section 9 source directory), and the version/date stamp on this one is October 2026 🌈 so this is a fresh little manual page, and the title it goes by is megasas_setup_jbod_map(9) in case you need to cite it in your group chat 💜 now go forth and set up that jbod map for FP seq_number, you've got this 👑💅

📦 where this page comes from