nfs4_ff_find...te_ds_client(9)

💅 nfs4_ff_find...te_ds_client(9) — from the Kernel API Manual 🎀

okay so bestie, you're in the Kernel API Manual and today's main character is nfs4_ff_find_or_create_ds_client(9). yes the header is doing that truncation thing (nfs4_ff_find...te_ds_client) — she's mysterious, she's abbreviated, she's fine. let's get into it 🦋

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✨ NAME ✨

nfs4_ff_find_or_create_ds_client — find or create a DS rpc client. that's literally the whole job. find it, or make it. slay 💅

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🌸 SYNOPSIS 🌸

struct rpc_clnt * nfs4_ff_find_or_create_ds_client (struct
nfs4_ff_layout_mirror *mirror , struct nfs_client *ds_clp , struct inode
*inode , u32 dss_id );

it hands you back a struct rpc_clnt *, and it wants four things from you. we're gonna go through them one by one, no skipping, i promise 🫶

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💖 ARGUMENTS 💖

• mirror — pointer to the mirror. she's a struct nfs4_ff_layout_mirror * and she is literally the mirror.
• ds_clp — the nfs_client for the DS. your data server's client handle, periodt.
• inode — pointer to inode. just an inode. a classic. iconic.
• dss_id — the DS stripe id, typed u32. yes it's a stripe id. yes it matters. iykyk ⭐

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🔥 DESCRIPTION 🔥

so what does she do? she finds or creates a DS rpc client with the MDS server rpc client auth flavor, and she looks for it in the nfs_client cl_ds_clients list.

that's it. that's the whole vibe check. find or create. in the list. with the auth flavor inherited from the MDS server rpc client. no cap, that's the entire personality 💀✨

lowkey important detail: the auth flavor comes from the MDS server rpc client, and the lookup happens in the nfs_client cl_ds_clients list. don't lose those, bestie, they're the whole point 🙈

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🦋 SEE ALSO 🦋

• Kernel file ./fs/nfs/flexfilelayout/flexfilelayoutdev.c — go read the source, she's right there 👑
• nfs4_ff_layout_prepare_ds(9) — her friend, also in the manual, also important 🌈

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and that's the page!! source/version is ./fs/nfs/flexfilelayout, dated October 2026, filed under nfs4_ff_find...te_ds_client(9) — mwah, drink water, and may all your rpc clients be found rather than created 💜🧚🍓