btrfs: pass struct btrfs_inode to btrfs_double_mmap_lock()

Pass a struct btrfs_inode to btrfs_double_mmap_lock() as it's an
internal interface, allowing to remove some use of BTRFS_I.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/reflink.c b/fs/btrfs/reflink.c
index 8640dbf1aefa47aca4e40b5d2b5ece9158d49114..2e000e96d026b456d7f7d7bb2c32d3d8db94ec7c 100644 (file)
--- a/fs/btrfs/reflink.c
+++ b/fs/btrfs/reflink.c
@@ -617,12 +617,12 @@ out:
        return ret;
 }
 
-static void btrfs_double_mmap_lock(struct inode *inode1, struct inode *inode2)
+static void btrfs_double_mmap_lock(struct btrfs_inode *inode1, struct btrfs_inode *inode2)
 {
        if (inode1 < inode2)
                swap(inode1, inode2);
-       down_write(&BTRFS_I(inode1)->i_mmap_lock);
-       down_write_nested(&BTRFS_I(inode2)->i_mmap_lock, SINGLE_DEPTH_NESTING);
+       down_write(&inode1->i_mmap_lock);
+       down_write_nested(&inode2->i_mmap_lock, SINGLE_DEPTH_NESTING);
 }
 
 static void btrfs_double_mmap_unlock(struct inode *inode1, struct inode *inode2)
@@ -875,7 +875,7 @@ loff_t btrfs_remap_file_range(struct file *src_file, loff_t off,
                btrfs_inode_lock(BTRFS_I(src_inode), BTRFS_ILOCK_MMAP);
        } else {
                lock_two_nondirectories(src_inode, dst_inode);
-               btrfs_double_mmap_lock(src_inode, dst_inode);
+               btrfs_double_mmap_lock(BTRFS_I(src_inode), BTRFS_I(dst_inode));
        }
 
        ret = btrfs_remap_file_range_prep(src_file, off, dst_file, destoff,