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Subject[PATCH 4/5] staging: lustre: llite: Use list_for_each_entry_safe
Date
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: simran singhal <singhalsimran0@gmail.com>
---
drivers/staging/lustre/lustre/llite/statahead.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/lustre/lustre/llite/statahead.c b/drivers/staging/lustre/lustre/llite/statahead.c
index fb7c315..d1287b2 100644
--- a/drivers/staging/lustre/lustre/llite/statahead.c
+++ b/drivers/staging/lustre/lustre/llite/statahead.c
@@ -860,6 +860,7 @@ static int ll_agl_thread(void *arg)
struct inode *dir = d_inode(parent);
struct ll_inode_info *plli = ll_i2info(dir);
struct ll_inode_info *clli;
+ struct ll_inode_info *tmp;
struct ll_sb_info *sbi = ll_i2sbi(dir);
struct ll_statahead_info *sai;
struct ptlrpc_thread *thread;
@@ -909,9 +910,7 @@ static int ll_agl_thread(void *arg)

spin_lock(&plli->lli_agl_lock);
sai->sai_agl_valid = 0;
- while (!list_empty(&sai->sai_agls)) {
- clli = list_entry(sai->sai_agls.next,
- struct ll_inode_info, lli_agl_list);
+ list_for_each_entry_safe(clli, tmp, &sai->sai_agls, lli_agl_list) {
list_del_init(&clli->lli_agl_list);
spin_unlock(&plli->lli_agl_lock);
clli->lli_agl_index = 0;
--
2.7.4
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