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SubjectRe: [patch] proc: cleanup: remove unused assignments
Dan Carpenter wrote:
> I removed 3 unused assignments. The first two get reset on the first
> statement of their functions. For "err" in root.c we don't return an
> error and we don't use the variable again.
>
> Signed-off-by: Dan Carpenter <error27@gmail.com>
>
> diff --git a/fs/proc/base.c b/fs/proc/base.c
> index a731084..875d636 100644
> --- a/fs/proc/base.c
> +++ b/fs/proc/base.c
> @@ -2434,7 +2434,7 @@ static struct dentry *proc_base_instantiate(struct inode *dir,
> const struct pid_entry *p = ptr;
> struct inode *inode;
> struct proc_inode *ei;
> - struct dentry *error = ERR_PTR(-EINVAL);
> + struct dentry *error;
>
> /* Allocate the inode */
> error = ERR_PTR(-ENOMEM);
>
why not do it like this:

@@ -2434,7 +2434,7 @@ static struct dentry *proc_base_instantiate(struct inode *dir,
const struct pid_entry *p = ptr;
struct inode *inode;
struct proc_inode *ei;
- struct dentry *error = ERR_PTR(-EINVAL);
+ struct dentry *error = ERR_PTR(-ENOMEM);

/* Allocate the inode */
- error = ERR_PTR(-ENOMEM);



> @@ -2784,7 +2784,7 @@ out:
>
> struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *nd)
> {
> - struct dentry *result = ERR_PTR(-ENOENT);
> + struct dentry *result;
> struct task_struct *task;
> unsigned tgid;
> struct pid_namespace *ns;
> diff --git a/fs/proc/root.c b/fs/proc/root.c
> index 757c069..4258384 100644
> --- a/fs/proc/root.c
> +++ b/fs/proc/root.c
> @@ -110,7 +110,6 @@ void __init proc_root_init(void)
> if (err)
> return;
> proc_mnt = kern_mount_data(&proc_fs_type, &init_pid_ns);
> - err = PTR_ERR(proc_mnt);
> if (IS_ERR(proc_mnt)) {
> unregister_filesystem(&proc_fs_type);
> return;
>
>


--
Zhenwen Xu - Seven Helight
Home Page: http://zhwen.org



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