f2fs_vmalloc
cc->private = f2fs_vmalloc(F2FS_I_SB(cc->inode),
cc->private = f2fs_vmalloc(F2FS_I_SB(cc->inode), size);
workspace = f2fs_vmalloc(F2FS_I_SB(cc->inode), workspace_size);
workspace = f2fs_vmalloc(dic->sbi, workspace_size);