gfs2_glock_put_eventually(9)

✨ gfs2_glock_put_eventually ✨

okay so bestie, this is a page from the Kernel API Manual, and it's about one very specific little function in the kernel. it's short, it's sweet, and it's all about not deadlocking 🫶

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💖 SYNOPSIS 💖

void gfs2_glock_put_eventually (struct gfs2_glock *gl );

that's it. that's the whole signature. no cap, it takes exactly one argument and returns nothing (void), because it's a "just do the thing" kind of function 💅

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🎀 ARGUMENTS 🎀

• gl — the glock to put. that's the whole description, bestie, the original page keeps it that brief and honestly? iconic. it's the struct gfs2_glock * you're handing over to be released 🦋

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🌸 DESCRIPTION 🌸

okay so here's the vibe check 🧚 when you're under memory pressure, this function triggers a deferred glock put — like, it schedules the put for later instead of doing it right now — and the reason is genuinely important: it makes sure we won't call into DLM and deadlock 💀 periodt. that's the whole safety mechanism.

Otherwise (i.e. when you're not under memory pressure), it just puts the glock directly. simple as that. no drama, no deferral, just an immediate put ✨

ngl the deadlock thing is the main character here — DLM calls under memory pressure = bad news, and that's exactly what the deferred path is dodging 🙈

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⭐ SEE ALSO ⭐

• Kernel file ./fs/gfs2/super.c 📁 — this is where you'll find the goods
• gfs2_jindex_free(9)
• gfs2_make_fs_rw(9)
• gfs2_lock_fs_check_clean(9)
• gfs2_write_inode(9)
• gfs2_dirty_inode(9)
• gfs2_make_fs_ro(9)
• gfs2_put_super(9)
• gfs2_sync_fs(9)
• gfs2_freeze_super(9)
• gfs2_thaw_super(9)
• statfs_slow_fill(9)
• gfs2_statfs_slow(9)
• gfs2_statfs_i(9)
• gfs2_statfs(9)
• gfs2_drop_inode(9)
• gfs2_show_options(9)
• evict_should_delete(9)
• evict_unlinked_inode(9)
• gfs2_evict_inode(9)

like, that's a whole friend group of functions right there and they all live under ./fs/gfs2 💜

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that's the whole page, bestie — go forth and put your glocks responsibly 💅✨

sign-off szn 🎀: this lil page comes from ./fs/gfs2, dated October 2026, and it's part of the Kernel API Manual — gfs2_glock_put_eventually(9), obviously 👑 mwah, slay, bye 🦋