btrfs: use copy_highpage() instead of 2 kmaps()

[platform/kernel/linux-rpi.git] / fs / btrfs / raid56.c

diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c
index 93fbf87..c86aff9 100644 (file)
--- a/fs/btrfs/raid56.c
+++ b/fs/btrfs/raid56.c
@@ -250,8 +250,6 @@ int btrfs_alloc_stripe_hash_table(struct btrfs_fs_info *info)
 static void cache_rbio_pages(struct btrfs_raid_bio *rbio)
 {
        int i;
-       char *s;
-       char *d;
        int ret;
 
        ret = alloc_rbio_pages(rbio);
@@ -262,13 +260,7 @@ static void cache_rbio_pages(struct btrfs_raid_bio *rbio)
                if (!rbio->bio_pages[i])
                        continue;
 
-               s = kmap(rbio->bio_pages[i]);
-               d = kmap(rbio->stripe_pages[i]);
-
-               copy_page(d, s);
-
-               kunmap(rbio->bio_pages[i]);
-               kunmap(rbio->stripe_pages[i]);
+               copy_highpage(rbio->stripe_pages[i], rbio->bio_pages[i]);
                SetPageUptodate(rbio->stripe_pages[i]);
        }
        set_bit(RBIO_CACHE_READY_BIT, &rbio->flags);