sunrpc_nl_cache_flush_doit(9)

✨ sunrpc_nl_cache_flush_doit(9) ✨

okay so bestie, we're in the Kernel API Manual today and the star of the show is sunrpc_nl_cache_flush_doit — yes that's a whole mouthful, no I will not be shortening it 💅

🌸 NAME 🌸

sunrpc_nl_cache_flush_doit — flush sunrpc caches via netlink

like literally, that's the whole vibe. it flushes sunrpc caches, and it does it through netlink. periodt.

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🎀 SYNOPSIS 🎀

int sunrpc_nl_cache_flush_doit (struct sk_buff *skb , struct genl_info
*info );

🦋 ARGUMENTS 🦋

• skb — reply buffer. that's the thing you're writing your answer into 🫶
• info — netlink metadata and command arguments. all the context and the args live in here ✨

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💖 DESCRIPTION 💖

okay so here's what's actually happening: this function flushes the ip_map and/or unix_gid caches. iconic behavior honestly.

here's the tea 🔥 — if SUNRPC_A_CACHE_FLUSH_MASK is provided, then only the caches indicated by that bitmask get flushed. and the bits are:

• bit 1 = ip_map
• bit 2 = unix_gid

but if you just... don't provide it? then it flushes both. generous queen energy 👑

returns 0 on success, or a negative errno if things went sideways 😭

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🌈 SEE ALSO 🌈

kernel file ./net/sunrpc/svcauth_unix.c — go read her, she's right there 🧚

and the whole friend group:

• sunrpc_nl_unix_gid_get_reqs_dumpit(9)
• sunrpc_nl_parse_one_unix_gid(9)
• sunrpc_nl_unix_gid_set_reqs_doit(9)
• svcauth_null_accept(9)
• svcauth_tls_accept(9)
• svcauth_unix_accept(9)
• sunrpc_nl_ip_map_get_reqs_dumpit(9)
• sunrpc_nl_parse_one_ip_map(9)
• sunrpc_nl_ip_map_set_reqs_doit(9)

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ngl bestie, if you're poking at the ip_map or unix_gid caches through netlink, this is your girl. read the mask bits twice, flush once 💀

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that's the whole page, mwah 💋 this came to you from ./net/sunrpc in October 2026, on the sunrpc_nl_cache_flush_doit(9) tip — stay hydrated, stay flushed 🍓🌸💜