sys_swapon: remove nr_good_pages variable

It still exists within setup_swap_map_and_extents(), but after it
nr_good_pages == p->pages.

Signed-off-by: Cesar Eduardo Barros <cesarb@cesarb.net>
Tested-by: Eric B Munson <emunson@mgebm.net>
Acked-by: Eric B Munson <emunson@mgebm.net>
Reviewed-by: Pekka Enberg <penberg@kernel.org>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 5 deletions

diff --git a/mm/swapfile.c b/mm/swapfile.c
index be0d0a28690e..9e3613b91612 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -2039,7 +2039,6 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
         int i, prev;
         int error;
         union swap_header *swap_header;
-        unsigned int nr_good_pages;
         int nr_extents;
         sector_t span;
         unsigned long maxpages;
@@ -2123,7 +2122,6 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
                 error = nr_extents;
                 goto bad_swap;
         }
-        nr_good_pages = p->pages;
 
         if (p->bdev) {
                 if (blk_queue_nonrot(bdev_get_queue(p->bdev))) {
@@ -2143,12 +2141,12 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
                 p->prio = --least_priority;
         p->swap_map = swap_map;
         p->flags |= SWP_WRITEOK;
-        nr_swap_pages += nr_good_pages;
-        total_swap_pages += nr_good_pages;
+        nr_swap_pages += p->pages;
+        total_swap_pages += p->pages;
 
         printk(KERN_INFO "Adding %uk swap on %s.  "
                         "Priority:%d extents:%d across:%lluk %s%s\n",
-                nr_good_pages<<(PAGE_SHIFT-10), name, p->prio,
+                p->pages<<(PAGE_SHIFT-10), name, p->prio,
                 nr_extents, (unsigned long long)span<<(PAGE_SHIFT-10),
                 (p->flags & SWP_SOLIDSTATE) ? "SS" : "",
                 (p->flags & SWP_DISCARDABLE) ? "D" : "");