From: Hugh Dickins <hugh@veritas.com>
Date: Tue, 6 Jan 2009 22:39:48 +0000 (-0800)
Subject: swapfile: remove SWP_ACTIVE mask
X-Git-Tag: MMI-PSA29.97-13-9~30326
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=22c6f8fdb31993cf49bdd4a47b64a7002391e1c7;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

swapfile: remove SWP_ACTIVE mask

Remove the SWP_ACTIVE mask: it just obscures the SWP_WRITEOK flag.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/include/linux/swap.h b/include/linux/swap.h
index 3a31cc25bd2c..410c8e473727 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -120,7 +120,6 @@ struct swap_extent {
 enum {
 	SWP_USED	= (1 << 0),	/* is slot in swap_info[] used? */
 	SWP_WRITEOK	= (1 << 1),	/* ok to write to this swap?	*/
-	SWP_ACTIVE	= (SWP_USED | SWP_WRITEOK),
 					/* add others here before... */
 	SWP_SCANNING	= (1 << 8),	/* refcount in scan_swap_map */
 };
diff --git a/mm/swapfile.c b/mm/swapfile.c
index e2adc8eb9317..915cb3fc43d7 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1222,7 +1222,7 @@ asmlinkage long sys_swapoff(const char __user * specialfile)
 	spin_lock(&swap_lock);
 	for (type = swap_list.head; type >= 0; type = swap_info[type].next) {
 		p = swap_info + type;
-		if ((p->flags & SWP_ACTIVE) == SWP_ACTIVE) {
+		if (p->flags & SWP_WRITEOK) {
 			if (p->swap_file->f_mapping == mapping)
 				break;
 		}
@@ -1674,7 +1674,7 @@ asmlinkage long sys_swapon(const char __user * specialfile, int swap_flags)
 	else
 		p->prio = --least_priority;
 	p->swap_map = swap_map;
-	p->flags = SWP_ACTIVE;
+	p->flags |= SWP_WRITEOK;
 	nr_swap_pages += nr_good_pages;
 	total_swap_pages += nr_good_pages;