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proc: copy_to_user() returns unsigned
copy_to_user() returns the number of bytes left to be copied.
This was a typo from: d82ef020cf
"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>
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@ -800,7 +800,7 @@ static ssize_t pagemap_read(struct file *file, char __user *buf,
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start_vaddr = end;
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len = min(count, PM_ENTRY_BYTES * pm.pos);
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if (copy_to_user(buf, pm.buffer, len) < 0) {
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if (copy_to_user(buf, pm.buffer, len)) {
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ret = -EFAULT;
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goto out_free;
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}
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