Commit bbcdac0c authored Jun 05, 2008 by Thomas Tuttle Committed by Linus Torvalds Jun 06, 2008

pagemap: return map count, not reference count, in /proc/kpagecount



Since pagemap is all about examining pages mapped into processes' memory
spaces, it makes sense for kpagecount to return the map counts, not the
reference counts.

Signed-off-by: Thomas Tuttle <ttuttle@google.com>
Cc: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent a4fa7ef0

fs/proc/proc_misc.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -726,7 +726,7 @@ static ssize_t kpagecount_read(struct file file, char __user buf,
		if (!ppage)
		pcount = 0;
		else
		pcount = atomic_read(&ppage->_count);
		pcount = page_mapcount(ppage);

		if (put_user(pcount, out++)) {
		ret = -EFAULT;