[RESEND PATCH v7 3/4] vfs: Remove unnecessary list_for_each_entry_safe() variants

[Waiman Long]

From: Jan Kara <j...@suse.cz>

evict_inodes() and invalidate_inodes() use list_for_each_entry_safe()
to iterate sb->s_inodes list. However, since we use i_lru list entry for
our local temporary list of inodes to destroy, the inode is guaranteed
to stay in sb->s_inodes list while we hold sb->s_inode_list_lock. So
there is no real need for safe iteration variant and we can use
list_for_each_entry() just fine.

Signed-off-by: Jan Kara <j...@suse.cz>
Signed-off-by: Waiman Long <waiman.l...@hpe.com>
---
 fs/inode.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/fs/inode.c b/fs/inode.c
index 69b8b52..c9cbea8 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -596,12 +596,12 @@ static void dispose_list(struct list_head *head)
  */
 void evict_inodes(struct super_block *sb)
 {
-       struct inode *inode, *next;
+       struct inode *inode;
        LIST_HEAD(dispose);
 
 again:
        spin_lock(&sb->s_inode_list_lock);
-       list_for_each_entry_safe(inode, next, &sb->s_inodes, i_sb_list) {
+       list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
                if (atomic_read(&inode->i_count))
                        continue;
 
@@ -646,11 +646,11 @@ again:
 int invalidate_inodes(struct super_block *sb, bool kill_dirty)
 {
        int busy = 0;
-       struct inode *inode, *next;
+       struct inode *inode;
        LIST_HEAD(dispose);
 
        spin_lock(&sb->s_inode_list_lock);
-       list_for_each_entry_safe(inode, next, &sb->s_inodes, i_sb_list) {
+       list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
                spin_lock(&inode->i_lock);
                if (inode->i_state & (I_NEW | I_FREEING | I_WILL_FREE)) {
                        spin_unlock(&inode->i_lock);
-- 
1.7.1