proc: copy_to_user() returns unsigned

copy_to_user() returns the number of bytes left to be copied.

This was a typo from: d82ef020cf31 "proc: pagemap: Hold mmap_sem during
page walk".

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index caf0337..a05a669 100644 (file)
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -800,7 +800,7 @@ 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;
                }