X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=mm%2Fswapfile.c;h=1e330f2998fa259d2733f73f4c50ce0d649c5dc0;hb=a152db71d962f405f7e9be5c818bddf6d1be50a7;hp=2f33edb8bee9d5409880be93364cc1d4be4c3735;hpb=5c402355adf8f920531f02099f4ec0d2bccd4c64;p=linux-2.6-omap-h63xx.git

diff --git a/mm/swapfile.c b/mm/swapfile.c
index 2f33edb8bee..1e330f2998f 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -33,8 +33,8 @@
 #include <asm/tlbflush.h>
 #include <linux/swapops.h>
 
-DEFINE_SPINLOCK(swap_lock);
-unsigned int nr_swapfiles;
+static DEFINE_SPINLOCK(swap_lock);
+static unsigned int nr_swapfiles;
 long total_swap_pages;
 static int swap_overflow;
 static int least_priority;
@@ -44,7 +44,7 @@ static const char Unused_file[] = "Unused swap file entry ";
 static const char Bad_offset[] = "Bad swap offset entry ";
 static const char Unused_offset[] = "Unused swap offset entry ";
 
-struct swap_list_t swap_list = {-1, -1};
+static struct swap_list_t swap_list = {-1, -1};
 
 static struct swap_info_struct swap_info[MAX_SWAPFILES];
 
@@ -369,13 +369,13 @@ int remove_exclusive_swap_page(struct page *page)
 	retval = 0;
 	if (p->swap_map[swp_offset(entry)] == 1) {
 		/* Recheck the page count with the swapcache lock held.. */
-		write_lock_irq(&swapper_space.tree_lock);
+		spin_lock_irq(&swapper_space.tree_lock);
 		if ((page_count(page) == 2) && !PageWriteback(page)) {
 			__delete_from_swap_cache(page);
 			SetPageDirty(page);
 			retval = 1;
 		}
-		write_unlock_irq(&swapper_space.tree_lock);
+		spin_unlock_irq(&swapper_space.tree_lock);
 	}
 	spin_unlock(&swap_lock);
 
@@ -403,7 +403,7 @@ void free_swap_and_cache(swp_entry_t entry)
 	if (p) {
 		if (swap_entry_free(p, swp_offset(entry)) == 1) {
 			page = find_get_page(&swapper_space, entry.val);
-			if (page && unlikely(TestSetPageLocked(page))) {
+			if (page && unlikely(!trylock_page(page))) {
 				page_cache_release(page);
 				page = NULL;
 			}
@@ -656,8 +656,8 @@ static int unuse_mm(struct mm_struct *mm,
 
 	if (!down_read_trylock(&mm->mmap_sem)) {
 		/*
-		 * Activate page so shrink_cache is unlikely to unmap its
-		 * ptes while lock is dropped, so swapoff can make progress.
+		 * Activate page so shrink_inactive_list is unlikely to unmap
+		 * its ptes while lock is dropped, so swapoff can make progress.
 		 */
 		activate_page(page);
 		unlock_page(page);