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proc: use ppos instead of m->version

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The ppos is a private cursor, just like m->version.  Use the canonical
cursor, not a special one.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20200317193201.9924-3-adobriyan@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2020-04-06 20:09:14 -07:00 committed by Linus Torvalds
parent c2e88d22e8
commit 4781f2c3ab
1 changed files with 3 additions and 4 deletions
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7
fs/proc/task_mmu.c
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@ -134,7 +134,7 @@ m_next_vma(struct proc_maps_private *priv, struct vm_area_struct *vma)
static void *m_start(struct seq_file *m, loff_t *ppos)
{
struct proc_maps_private *priv = m->private;
unsigned long last_addr = m->version;
unsigned long last_addr = *ppos;
struct mm_struct *mm;
struct vm_area_struct *vma;
@ -170,14 +170,13 @@ static void *m_start(struct seq_file *m, loff_t *ppos)
return priv->tail_vma;
}
static void *m_next(struct seq_file *m, void *v, loff_t *pos)
static void *m_next(struct seq_file *m, void *v, loff_t *ppos)
{
struct proc_maps_private *priv = m->private;
struct vm_area_struct *next;
(*pos)++;
next = m_next_vma(priv, v);
m->version = next ? next->vm_start : -1UL;
*ppos = next ? next->vm_start : -1UL;
return next;
}