__devlink_sn...ot_id_insert(9)

✨ __devlink_snapshot_id_insert ✨

okay so bestie, this one's straight out of the Kernel API Manual and honestly? it's lowkey a little gatekeeper function. let's get into it 🫶

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🌸 NAME 🌸

__devlink_snapshot_id_insert — insert a specific snapshot ID 💅

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🎀 SYNOPSIS 🎀

int __devlink_snapshot_id_insert (struct devlink *devlink , u32 id );

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🦋 ARGUMENTS 🦋

• devlink — the devlink instance, aka the whole vibe we're operating on
• id — the snapshot id, the one you're claiming, no cap

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💖 DESCRIPTION 💖

So what this does: it marks the given snapshot id as used by inserting a zero value into the snapshot xarray. that's literally it. iconic behaviour, zero drama. ✨

🚨 okay this part matters: this must be called while holding the devlink instance lock. like, not optional. hold the lock, bestie.

and here's the tea — unlike devlink_snapshot_id_get, the initial reference count here is zero, not one. very different energy. it's expected that the id will immediately be used before releasing the devlink instance lock, so don't be out here sitting on it 🙈

Returns zero on success, or an error code if the snapshot id could not be inserted. so if you get a zero back, slay. anything else? 💀 something went wrong.

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🌈 SEE ALSO 🌈

Kernel file ./net/devlink/region.c — plus all these siblings and cousins, go say hi 👑

• __devlink_snapshot_id_increment(9)
• __devlink_snapshot_id_decrement(9)
• __devlink_region_snapshot_id_get(9)
• __devlink_region_snapshot_create(9)
• devl_region_create(9)
• devlink_region_create(9)
• devlink_port_region_create(9)
• devl_region_destroy(9)
• devlink_region_destroy(9)
• devlink_region_snapshot_id_get(9)
• devlink_region_snapshot_id_put(9)
• devlink_region_snapshot_create(9)

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that's the whole page, no crumbs left 🍓 this one came from ./net/devlink, dated October 2026 — so like, mark your calendars bestie, and remember: hold the lock, insert the zero, use the id immediately. periodt 💜🧚