lustre: don't set f_version in ll_readdir

f_version is only ever used by filesystem-specific code. Generic
VFS code never uses it.

Nothing in lustre ever looks at it, so just remove this.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>

drivers/staging/lustre/lustre/llite/dir.c

@@ -369,8 +369,6 @@ static int ll_readdir(struct file *filp, struct dir_context *ctx)
 	}
 	ctx->pos = pos;
 	ll_finish_md_op_data(op_data);
-	filp->f_version = inode->i_version;
-
 out:
 	if (!rc)
 		ll_stats_ops_tally(sbi, LPROC_LL_READDIR, 1);
@@ -1678,7 +1676,6 @@ static loff_t ll_dir_seek(struct file *file, loff_t offset, int origin)
 			else
 				fd->lfd_pos = offset;
 			file->f_pos = offset;
-			file->f_version = 0;
 		}
 		ret = offset;
 	}