kprobes: use hlist_for_each_entry

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index bee29bd..9934523 100644 (file)
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -134,8 +134,7 @@ kprobe_opcode_t __kprobes *get_insn_slot(void)
        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++) {
@@ -214,9 +213,8 @@ static int __kprobes collect_garbage_slots(void)
        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 */
@@ -235,8 +233,7 @@ void __kprobes free_insn_slot(kprobe_opcode_t * slot, int dirty)
        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;