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authorDong Fang <yp.fangdong@gmail.com>2013-09-11 14:19:50 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-11 15:56:36 -0700
commitdf53cd3b70712cd136f10ef79457623c5c3764a4 (patch)
tree426988282de0ac3ff6d00a51dc8f299e47dfeefc /fs/ocfs2/dlm/dlmmaster.c
parent8dd7903e48df3779bc424196c22dc73b66d0643e (diff)
ocfs2: use list_for_each_entry() instead of list_for_each()
[dan.carpenter@oracle.com: fix up some NULL dereference bugs] Signed-off-by: Dong Fang <yp.fangdong@gmail.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Jeff Liu <jeff.liu@oracle.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ocfs2/dlm/dlmmaster.c')
-rw-r--r--fs/ocfs2/dlm/dlmmaster.c18
1 files changed, 5 insertions, 13 deletions
diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index 33ecbe0e6734..cf0f103963b1 100644
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -342,16 +342,13 @@ static int dlm_find_mle(struct dlm_ctxt *dlm,
{
struct dlm_master_list_entry *tmpmle;
struct hlist_head *bucket;
- struct hlist_node *list;
unsigned int hash;
assert_spin_locked(&dlm->master_lock);
hash = dlm_lockid_hash(name, namelen);
bucket = dlm_master_hash(dlm, hash);
- hlist_for_each(list, bucket) {
- tmpmle = hlist_entry(list, struct dlm_master_list_entry,
- master_hash_node);
+ hlist_for_each_entry(tmpmle, bucket, master_hash_node) {
if (!dlm_mle_equal(dlm, tmpmle, name, namelen))
continue;
dlm_get_mle(tmpmle);
@@ -3183,7 +3180,7 @@ void dlm_clean_master_list(struct dlm_ctxt *dlm, u8 dead_node)
struct dlm_master_list_entry *mle;
struct dlm_lock_resource *res;
struct hlist_head *bucket;
- struct hlist_node *list;
+ struct hlist_node *tmp;
unsigned int i;
mlog(0, "dlm=%s, dead node=%u\n", dlm->name, dead_node);
@@ -3194,10 +3191,7 @@ top:
spin_lock(&dlm->master_lock);
for (i = 0; i < DLM_HASH_BUCKETS; i++) {
bucket = dlm_master_hash(dlm, i);
- hlist_for_each(list, bucket) {
- mle = hlist_entry(list, struct dlm_master_list_entry,
- master_hash_node);
-
+ hlist_for_each_entry_safe(mle, tmp, bucket, master_hash_node) {
BUG_ON(mle->type != DLM_MLE_BLOCK &&
mle->type != DLM_MLE_MASTER &&
mle->type != DLM_MLE_MIGRATION);
@@ -3378,7 +3372,7 @@ void dlm_force_free_mles(struct dlm_ctxt *dlm)
int i;
struct hlist_head *bucket;
struct dlm_master_list_entry *mle;
- struct hlist_node *tmp, *list;
+ struct hlist_node *tmp;
/*
* We notified all other nodes that we are exiting the domain and
@@ -3394,9 +3388,7 @@ void dlm_force_free_mles(struct dlm_ctxt *dlm)
for (i = 0; i < DLM_HASH_BUCKETS; i++) {
bucket = dlm_master_hash(dlm, i);
- hlist_for_each_safe(list, tmp, bucket) {
- mle = hlist_entry(list, struct dlm_master_list_entry,
- master_hash_node);
+ hlist_for_each_entry_safe(mle, tmp, bucket, master_hash_node) {
if (mle->type != DLM_MLE_BLOCK) {
mlog(ML_ERROR, "bad mle: %p\n", mle);
dlm_print_one_mle(mle);