rpc_cancel_tasks(9)

okay so welcome to the Kernel API Manual, bestie — today's main character is rpc_cancel_tasks(9) and we're gonna understand it fr fr 💅✨

🎀 NAME 🎀

rpc_cancel_tasks — try to cancel a set of RPC tasks. that's the whole vibe: not "definitely cancel", it's "try to cancel", no cap 🫶

✨ SYNOPSIS ✨

unsigned long rpc_cancel_tasks (struct rpc_clnt *clnt , int error , bool (*fnmatch)(const struct rpc_task *, const void *) , const void *data );

🌸 ARGUMENTS 🌸

• clnt — pointer to RPC client. like, the RPC client we're working with 💖
• error — RPC task error value to set. and yes, DESCRIPTION is gonna yell about the negative part, so stay tuned 🚨
• fnmatch — pointer to selector function. this is the little matchmaker that picks which tasks are in the set 👑
• data — user data. it gets passed along for the selector to use, periodt.

🦋 DESCRIPTION 🦋

okay so here's the actual tea: it uses fnmatch to define a set of RPC tasks that are to be cancelled. that's the selector's whole job — decide which tasks are in the cancellation set 💅

🚨 important caveat, bestie: the argument error must be a negative error value. not zero, not positive — negative. this is not a drill 😭

🔥 SEE ALSO 🔥

Kernel file: ./net/sunrpc/clnt.c

• rpc_create(9)
• rpc_clone_client(9)
• rpc_clone_client_set_auth(9)
• rpc_switch_client_transport(9)
• rpc_clnt_iterate_for_each_xprt(9)
• rpc_hold_client(9)
• rpc_release_client(9)
• rpc_bind_new_program(9)
• rpc_run_task(9)
• rpc_call_sync(9)
• rpc_call_async(9)
• rpc_run_bc_task(9)
• rpc_prepare_reply_pages(9)
• rpc_peeraddr(9)
• rpc_peeraddr2str(9)
• rpc_localaddr(9)
• rpc_net_ns(9)
• rpc_max_payload(9)
• rpc_max_bc_payload(9)
• rpc_force_rebind(9)
• rpc_clnt_test_and_add_xprt(9)
• rpc_clnt_setup_test_and_add_xprt(9)
• rpc_clnt_add_xprt(9)

mwah 💋 that's the page! source/version: ./net/sunrpc · date: October 2026 · manual page: rpc_cancel_tasks(9) — bye bestie, go cancel some tasks (or try to) 🫶🌈