[PATCH 3/6] proc: remove mm_for_maps()

Cong Wang
2012-04-11T06:01:16Z

mm_for_maps() is a simple wrapper for mm_access(),
and the name is misleading, so just remove it and use
mm_access() directly.

Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
---
fs/proc/base.c | 7 +------
fs/proc/internal.h | 2 --
fs/proc/task_mmu.c | 4 ++--
fs/proc/task_nommu.c | 2 +-
4 files changed, 4 insertions(+), 11 deletions(-)

diff --git a/fs/proc/base.c b/fs/proc/base.c
index 919d14c..8608a4d 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -198,11 +198,6 @@ static int proc_root_link(struct dentry *dentry, struct path *path)
return result;
}

-struct mm_struct *mm_for_maps(struct task_struct *task)
-{
- return mm_access(task, PTRACE_MODE_READ);
-}
-
static int proc_pid_cmdline(struct task_struct *task, char * buffer)
{
int res = 0;
@@ -242,7 +237,7 @@ out:

static int proc_pid_auxv(struct task_struct *task, char *buffer)
{
- struct mm_struct *mm = mm_for_maps(task);
+ struct mm_struct *mm = mm_access(task, PTRACE_MODE_READ);
int res = PTR_ERR(mm);
if (mm && !IS_ERR(mm)) {
unsigned int nwords = 0;
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 5f79bb8..a306437 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -31,8 +31,6 @@ struct vmalloc_info {
unsigned long largest_chunk;
};

-extern struct mm_struct *mm_for_maps(struct task_struct *);
-
#ifdef CONFIG_MMU
#define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START)
extern void get_vmalloc_info(struct vmalloc_info *vmi);
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 2b9a760..03360a1 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -125,7 +125,7 @@ static void *m_start(struct seq_file *m, loff_t *pos)
if (!priv->task)
return ERR_PTR(-ESRCH);

- mm = mm_for_maps(priv->task);
+ mm = mm_access(priv->task, PTRACE_MODE_READ);
if (!mm || IS_ERR(mm))
return mm;
down_read(&mm->mmap_sem);
@@ -914,7 +914,7 @@ static ssize_t pagemap_read(struct file *file, char __user *buf,
if (!pm.buffer)
goto out_task;

- mm = mm_for_maps(task);
+ mm = mm_access(task, PTRACE_MODE_READ);
ret = PTR_ERR(mm);
if (!mm || IS_ERR(mm))
goto out_free;
diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
index 74fe164..1ccfa53 100644
--- a/fs/proc/task_nommu.c
+++ b/fs/proc/task_nommu.c
@@ -223,7 +223,7 @@ static void *m_start(struct seq_file *m, loff_t *pos)
if (!priv->task)
return ERR_PTR(-ESRCH);

- mm = mm_for_maps(priv->task);
+ mm = mm_access(priv->task, PTRACE_MODE_READ);
if (!mm || IS_ERR(mm)) {
put_task_struct(priv->task);
priv->task = NULL;
--
1.7.7.6