linux-kernel - [PATCH 1/3] kprobes: use hlist_for_each

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Message-ID: <20070331135920.GA17406@lst.de>
Date:	Sat, 31 Mar 2007 15:59:20 +0200
From:	Christoph Hellwig <hch@....de>
To:	akpm@...l.org
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] kprobes: use hlist_for_each_entry


Signed-off-by: Christoph Hellwig <hch@....de>

Index: linux-2.6/kernel/kprobes.c
===================================================================
--- linux-2.6.orig/kernel/kprobes.c	2007-03-31 14:15:39.000000000 +0200
+++ linux-2.6/kernel/kprobes.c	2007-03-31 14:20:29.000000000 +0200
@@ -133,8 +133,7 @@ kprobe_opcode_t __kprobes *get_insn_slot
 	struct hlist_node *pos;
 
       retry:
-	hlist_for_each(pos, &kprobe_insn_pages) {
-		kip = hlist_entry(pos, struct kprobe_insn_page, hlist);
+	hlist_for_each_entry(kip, pos, &kprobe_insn_pages, hlist) {
 		if (kip->nused < INSNS_PER_PAGE) {
 			int i;
 			for (i = 0; i < INSNS_PER_PAGE; i++) {
@@ -213,9 +212,8 @@ static int __kprobes collect_garbage_slo
 	if (check_safety() != 0)
 		return -EAGAIN;
 
-	hlist_for_each_safe(pos, next, &kprobe_insn_pages) {
+	hlist_for_each_entry_safe(kip, pos, next, &kprobe_insn_pages, hlist) {
 		int i;
-		kip = hlist_entry(pos, struct kprobe_insn_page, hlist);
 		if (kip->ngarbage == 0)
 			continue;
 		kip->ngarbage = 0;	/* we will collect all garbages */
@@ -234,8 +232,7 @@ void __kprobes free_insn_slot(kprobe_opc
 	struct kprobe_insn_page *kip;
 	struct hlist_node *pos;
 
-	hlist_for_each(pos, &kprobe_insn_pages) {
-		kip = hlist_entry(pos, struct kprobe_insn_page, hlist);
+	hlist_for_each_entry(kip, pos, &kprobe_insn_pages, hlist) {
 		if (kip->insns <= slot &&
 		    slot < kip->insns + (INSNS_PER_PAGE * MAX_INSN_SIZE)) {
 			int i = (slot - kip->insns) / MAX_INSN_SIZE;
-
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