vfs: Rename end_writeback() to clear_inode()

After we moved inode_sync_wait() from end_writeback() it doesn't make sense
to call the function end_writeback() anymore. Rename it to clear_inode()
which well says what the function really does - set I_CLEAR flag.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c
index 1d75c92..66519d2 100644
--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -151,7 +151,7 @@
 spufs_evict_inode(struct inode *inode)
 {
 	struct spufs_inode_info *ei = SPUFS_I(inode);
-	end_writeback(inode);
+	clear_inode(inode);
 	if (ei->i_ctx)
 		put_spu_context(ei->i_ctx);
 	if (ei->i_gang)