blkg_rwstat_read(9)

✨ blkg_rwstat_read(9) ✨

okay so bestie, welcome to the Kernel API Manual 💖 this one's a lil function from the kernel block layer and honestly it's giving "tiny but essential" energy. it lives in ./block and it's lowkey the read half of the blkg_rwstat squad 🎀

🌸 NAME 🌸

blkg_rwstat_read — read the current values of a blkg_rwstat

✨ SYNOPSIS ✨

void blkg_rwstat_read (struct blkg_rwstat *rwstat , struct
       blkg_rwstat_sample *result );

like, that's the whole signature, no cap 🫶

🦋 ARGUMENTS 🦋

• rwstat — the blkg_rwstat you wanna read, bestie. this is the thing you're peeking at 👀
• result — where to put the current values. yes, you gotta give it somewhere to land 💅

💜 DESCRIPTION 💜

Read the current snapshot of rwstat and return it in the result counts. that's it, that's the vibe — you hand it the stat, it hands you back a lil snapshot of the counts as they are right now ✨ literally a snapshot moment, main character energy 📸

👑 SEE ALSO 👑

Kernel file ./block/blk-cgroup-rwstat.h, plus the rest of the crew:

• blkg_rwstat_add(9)
• blkg_rwstat_total(9)
• blkg_rwstat_reset(9)
• blkg_rwstat_add_aux(9)

🎀 friendly reminder: blkg_rwstat_read is the reader, not the writer — if you're trying to change the stats you want blkg_rwstat_add(9) or blkg_rwstat_reset(9), iykyk 💅

and that's a wrap, bestie 🌈 this page came from ./block in the Kernel API Manual, dated October 2026, and it's still filed under blkg_rwstat_read(9) — slay 💖✨🦋