[PATCH]xfs: Fix xfs_swap_extents() after removal of xfs_flushinval_pages()

[Torsten Kaiser <just.for.lkml@xxxxxxxxxxxxxx>]

From: Torsten Kaiser <just.for.lkml@xxxxxxxxxxxxxx>

Commit fb59581404ab7ec5075299065c22cb211a9262a9 removed
xfs_flushinval_pages() and changed its callers to use
filemap_write_and_wait() and  truncate_pagecache_range() directly.

But in xfs_swap_extents() this change accidental switched the argument
for 'tip' to 'ip'. This patch switches it back to 'tip'

Signed-off-by: Torsten Kaiser <just.for.lkml@xxxxxxxxxxxxxx>

--- a/fs/xfs/xfs_dfrag.c
+++ b/fs/xfs/xfs_dfrag.c
@@ -246,10 +246,10 @@ xfs_swap_extents(
                goto out_unlock;
        }
 
-       error = -filemap_write_and_wait(VFS_I(ip)->i_mapping);
+       error = -filemap_write_and_wait(VFS_I(tip)->i_mapping);
        if (error)
                goto out_unlock;
-       truncate_pagecache_range(VFS_I(ip), 0, -1);
+       truncate_pagecache_range(VFS_I(tip), 0, -1);
 
        /* Verify O_DIRECT for ftmp */
        if (VN_CACHED(VFS_I(tip)) != 0) {