gfs2_ail1_wipe(9)

💅 gfs2_ail1_wipe(9) — from the Kernel API Manual, bestie 🎀

okay so bestie, buckle up, because this one is a little kernel-side gem from <pink>gfs2_ail1_wipe</pink> (section 9 of the Kernel API Manual, iykyk) and it's literally about cleaning up after deleted stuff. main character energy: cleanup crew edition. 🧹✨

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✨ NAME ✨

gfs2_ail1_wipe — remove deleted/freed buffers from the ail1 list 🗑️💖

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🌸 SYNOPSIS 🌸

void gfs2_ail1_wipe (struct gfs2_sbd *sdp , u64 bstart , u32 blen );

that's it, that's the whole vibe. it returns void, so like… nothing comes back. it just does the thing. 🫶

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🦋 ARGUMENTS 🦋

• sdp — the superblock, bestie. the big one. the whole filesystem's main character 🫡
• bstart — starting block address of the buffers you wanna remove 📍
• blen — the length of buffers to be removed, aka how many we're yeeting 🌈

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👑 DESCRIPTION 👑

okay so here's the tea ☕: this function gets called from gfs2_journal wipe, and that one's whole job is to remove buffers — the ones corresponding to deleted blocks — from the journal. literally janitor duty but make it filesystem. 🧚

and here's the part that matters: if we find any bufdata elements still chilling on the system ail1 list, that means they haven't been written to the journal yet. 😭 so… we remove them. that's it. that's the function. no cap. ✨

fr fr this is a "if it's still hanging around unwritten, wipe it" situation — please don't @ me, that's just what the manpage says 💀

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🔥 SEE ALSO 🔥

go read these next, bestie, they're all in the kernel file ./fs/gfs2/meta_io.c and they're lowkey iconic 👑:

• gfs2_getbuf(9)
• gfs2_meta_new(9)
• gfs2_meta_read(9)
• gfs2_meta_wait(9)
• gfs2_journal_wipe(9)
• gfs2_meta_buffer(9)
• gfs2_meta_ra(9)

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and that's the whole page, bb 🫶 this lil drop came out of ./fs/gfs2 in October 2026 — stay slay, stay wiped, and remember: buffers don't belong on the ail1 list if they never made it to the journal 💜✨