[patch] proc: copy_to_user() returns unsigned

From: Dan Carpenter
Date: Tue Apr 06 2010 - 06:45:58 EST

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@xxxxxxxxx>

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;
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