From: Jan Kara Subject: Re: [PATCH 1/6] fs: add hole punching to fallocate Date: Tue, 16 Nov 2010 12:16:11 +0100 Message-ID: <20101116111611.GA4757@quack.suse.cz> References: <1289840723-3056-1-git-send-email-josef@redhat.com> <1289840723-3056-2-git-send-email-josef@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: david@fromorbit.com, linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, xfs@oss.sgi.com, cmm@us.ibm.com, cluster-devel@redhat.com, ocfs2-devel@oss.oracle.com To: Josef Bacik Return-path: Received: from cantor2.suse.de ([195.135.220.15]:47948 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752128Ab0KPLQP (ORCPT ); Tue, 16 Nov 2010 06:16:15 -0500 Content-Disposition: inline In-Reply-To: <1289840723-3056-2-git-send-email-josef@redhat.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Mon 15-11-10 12:05:18, Josef Bacik wrote: > diff --git a/fs/open.c b/fs/open.c > index 4197b9e..ab8dedf 100644 > --- a/fs/open.c > +++ b/fs/open.c > @@ -223,7 +223,7 @@ int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len) > return -EINVAL; > > /* Return error if mode is not supported */ > - if (mode && !(mode & FALLOC_FL_KEEP_SIZE)) > + if (mode && (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))) Why not just: if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) ? > diff --git a/include/linux/falloc.h b/include/linux/falloc.h > index 3c15510..851cba2 100644 > --- a/include/linux/falloc.h > +++ b/include/linux/falloc.h > @@ -2,6 +2,7 @@ > #define _FALLOC_H_ > > #define FALLOC_FL_KEEP_SIZE 0x01 /* default is extend size */ > +#define FALLOC_FL_PUNCH_HOLE 0X02 /* de-allocates range */ ^ use lowercase 'x' please... Honza -- Jan Kara SUSE Labs, CR