ext4: use swap() in mext_page_double_lock()

Use kernel.h macro definition.

Thanks to Julia Lawall for Coccinelle scripting support.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

1 files changed, 3 insertions, 6 deletions

diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c
index 370420bfae8d..8c04afb90b1b 100644
--- a/fs/ext4/move_extent.c
+++ b/fs/ext4/move_extent.c
@@ -166,12 +166,9 @@ mext_page_double_lock(struct inode *inode1, struct inode *inode2,
          */
         wait_on_page_writeback(page[0]);
         wait_on_page_writeback(page[1]);
-        if (inode1 > inode2) {
-                struct page *tmp;
-                tmp = page[0];
-                page[0] = page[1];
-                page[1] = tmp;
-        }
+        if (inode1 > inode2)
+                swap(page[0], page[1]);
+
         return 0;
 }