Author: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Doubly linked lists which are iterated using list_empty
and list_entry macros have been replaced with list_for_each_entry_safe
macro.
This makes the iteration simpler and more readable.
This patch replaces the while loop containing list_empty and list_entry
with list_for_each_entry_safe.
This was done with Coccinelle.
@@
expression E1;
identifier I1, I2;
type T;
iterator name list_for_each_entry_safe;
@@
T *I1;
+ T *tmp;
...
- while (list_empty(&E1) == 0)
+ list_for_each_entry_safe (I1, tmp, &E1, I2)
{
...when != T *I1;
- I1 = list_entry(E1.next, T, I2);
...
}
Signed-off-by: Bhaktipriya Shridhar
Signed-off-by: Greg Kroah-Hartman
---
drivers/staging/lustre/lustre/osc/osc_cache.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/lustre/lustre/osc/osc_cache.c b/drivers/staging/lustre/lustre/osc/osc_cache.c
index 2e45255..6336311 100644
--- a/drivers/staging/lustre/lustre/osc/osc_cache.c
+++ b/drivers/staging/lustre/lustre/osc/osc_cache.c
@@ -1905,13 +1905,12 @@ static int get_write_extents(struct osc_object *obj, struct list_head *rpclist)
{
struct client_obd *cli = osc_cli(obj);
struct osc_extent *ext;
+ struct osc_extent *temp;
int page_count = 0;
unsigned int max_pages = cli->cl_max_pages_per_rpc;
LASSERT(osc_object_is_locked(obj));
- while (!list_empty(&obj->oo_hp_exts)) {
- ext = list_entry(obj->oo_hp_exts.next, struct osc_extent,
- oe_link);
+ list_for_each_entry_safe(ext, temp, &obj->oo_hp_exts, oe_link) {
LASSERT(ext->oe_state == OES_CACHE);
if (!try_to_add_extent_for_io(cli, ext, rpclist, &page_count,
&max_pages))
@@ -2667,6 +2666,7 @@ int osc_cache_truncate_start(const struct lu_env *env, struct osc_io *oio,
{
struct client_obd *cli = osc_cli(obj);
struct osc_extent *ext;
+ struct osc_extent *temp;
struct osc_extent *waiting = NULL;
pgoff_t index;
LIST_HEAD(list);
@@ -2726,10 +2726,9 @@ again:
osc_list_maint(cli, obj);
- while (!list_empty(&list)) {
+ list_for_each_entry_safe(ext, temp, &list, oe_link) {
int rc;
- ext = list_entry(list.next, struct osc_extent, oe_link);
list_del_init(&ext->oe_link);
/* extent may be in OES_ACTIVE state because inode mutex |
---
drivers/staging/lustre/lustre/osc/osc_cache.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/lustre/lustre/osc/osc_cache.c b/drivers/staging/lustre/lustre/osc/osc_cache.c
index 2e45255..6336311 100644
--- a/drivers/staging/lustre/lustre/osc/osc_cache.c
+++ b/drivers/staging/lustre/lustre/osc/osc_cache.c
@@ -1905,13 +1905,12 @@ static int get_write_extents(struct osc_object *obj, struct list_head *rpclist)
{
struct client_obd *cli = osc_cli(obj);
struct osc_extent *ext;
+ struct osc_extent *temp;
int page_count = 0;
unsigned int max_pages = cli->cl_max_pages_per_rpc;
LASSERT(osc_object_is_locked(obj));
- while (!list_empty(&obj->oo_hp_exts)) {
- ext = list_entry(obj->oo_hp_exts.next, struct osc_extent,
- oe_link);
+ list_for_each_entry_safe(ext, temp, &obj->oo_hp_exts, oe_link) {
LASSERT(ext->oe_state == OES_CACHE);
if (!try_to_add_extent_for_io(cli, ext, rpclist, &page_count,
&max_pages))
@@ -2667,6 +2666,7 @@ int osc_cache_truncate_start(const struct lu_env *env, struct osc_io *oio,
{
struct client_obd *cli = osc_cli(obj);
struct osc_extent *ext;
+ struct osc_extent *temp;
struct osc_extent *waiting = NULL;
pgoff_t index;
LIST_HEAD(list);
@@ -2726,10 +2726,9 @@ again:
osc_list_maint(cli, obj);
- while (!list_empty(&list)) {
+ list_for_each_entry_safe(ext, temp, &list, oe_link) {
int rc;
- ext = list_entry(list.next, struct osc_extent, oe_link);
list_del_init(&ext->oe_link);
/* extent may be in OES_ACTIVE state because inode mutex