copy_to_user() returns the number of bytes left to be copied.
This was a typo from: d82ef020cf31504c816803b1def94eb5ff173363
"proc: pagemap: Hold mmap_sem during page walk".
Signed-off-by: Dan Carpenter <error27@gmail.com>
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 0962739..bfb2773 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -799,7 +799,7 @@ static ssize_t pagemap_read(struct file *file, char __user *buf,
start_vaddr = end;
len = min(count, PM_ENTRY_BYTES * pm.pos);
- if (copy_to_user(buf, pm.buffer, len) < 0) {
+ if (copy_to_user(buf, pm.buffer, len)) {
ret = -EFAULT;
goto out_free;
}
--
