mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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39144062ea
Remove three functions that are no longer used. rxrpc_get_txbuf() last use was removed by 2020's commit5e6ef4f101("rxrpc: Make the I/O thread take over the call and local processor work") rxrpc_kernel_get_epoch() last use was removed by 2020's commit44746355cc("afs: Don't get epoch from a server because it may be ambiguous") rxrpc_kernel_set_max_life() last use was removed by 2023's commitdb099c625b("rxrpc: Fix timeout of a call that hasn't yet been granted a channel") Both of the rxrpc_kernel_* functions were documented. Remove that documentation as well as the code. Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org> Acked-by: David Howells <dhowells@redhat.com> Link: https://patch.msgid.link/20250422235147.146460-1-linux@treblig.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
96 lines
2.4 KiB
C
96 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/* RxRPC Tx data buffering.
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*
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* Copyright (C) 2022 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/slab.h>
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#include "ar-internal.h"
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static atomic_t rxrpc_txbuf_debug_ids;
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atomic_t rxrpc_nr_txbuf;
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/*
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* Allocate and partially initialise a data transmission buffer.
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*/
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struct rxrpc_txbuf *rxrpc_alloc_data_txbuf(struct rxrpc_call *call, size_t data_size,
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size_t data_align, gfp_t gfp)
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{
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struct rxrpc_txbuf *txb;
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size_t total, doff, jsize = sizeof(struct rxrpc_jumbo_header);
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void *buf;
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txb = kzalloc(sizeof(*txb), gfp);
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if (!txb)
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return NULL;
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/* We put a jumbo header in the buffer, but not a full wire header to
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* avoid delayed-corruption problems with zerocopy.
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*/
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doff = round_up(jsize, data_align);
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total = doff + data_size;
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data_align = umax(data_align, L1_CACHE_BYTES);
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mutex_lock(&call->conn->tx_data_alloc_lock);
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buf = page_frag_alloc_align(&call->conn->tx_data_alloc, total, gfp,
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data_align);
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mutex_unlock(&call->conn->tx_data_alloc_lock);
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if (!buf) {
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kfree(txb);
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return NULL;
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}
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refcount_set(&txb->ref, 1);
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txb->call_debug_id = call->debug_id;
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txb->debug_id = atomic_inc_return(&rxrpc_txbuf_debug_ids);
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txb->alloc_size = data_size;
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txb->space = data_size;
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txb->offset = 0;
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txb->flags = call->conn->out_clientflag;
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txb->seq = call->send_top + 1;
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txb->data = buf + doff;
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trace_rxrpc_txbuf(txb->debug_id, txb->call_debug_id, txb->seq, 1,
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rxrpc_txbuf_alloc_data);
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atomic_inc(&rxrpc_nr_txbuf);
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return txb;
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}
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void rxrpc_see_txbuf(struct rxrpc_txbuf *txb, enum rxrpc_txbuf_trace what)
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{
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int r = refcount_read(&txb->ref);
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trace_rxrpc_txbuf(txb->debug_id, txb->call_debug_id, txb->seq, r, what);
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}
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static void rxrpc_free_txbuf(struct rxrpc_txbuf *txb)
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{
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trace_rxrpc_txbuf(txb->debug_id, txb->call_debug_id, txb->seq, 0,
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rxrpc_txbuf_free);
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if (txb->data)
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page_frag_free(txb->data);
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kfree(txb);
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atomic_dec(&rxrpc_nr_txbuf);
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}
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void rxrpc_put_txbuf(struct rxrpc_txbuf *txb, enum rxrpc_txbuf_trace what)
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{
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unsigned int debug_id, call_debug_id;
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rxrpc_seq_t seq;
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bool dead;
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int r;
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if (txb) {
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debug_id = txb->debug_id;
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call_debug_id = txb->call_debug_id;
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seq = txb->seq;
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dead = __refcount_dec_and_test(&txb->ref, &r);
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trace_rxrpc_txbuf(debug_id, call_debug_id, seq, r - 1, what);
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if (dead)
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rxrpc_free_txbuf(txb);
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}
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}
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