From: Christoph Hellwig <hch@lst.de>
To: Steve French <smfrench@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>, Al Viro <viro@zeniv.linux.org.uk>,
Peng Tao <tao.peng@primarydata.com>,
Jeffrey Layton <jeff.layton@primarydata.com>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
linux-btrfs@vger.kernel.org,
"linux-nfs@vger.kernel.org" <linux-nfs@vger.kernel.org>,
"linux-cifs@vger.kernel.org" <linux-cifs@vger.kernel.org>
Subject: Re: vfs: move btrfs clone ioctls to common code
Date: Wed, 2 Dec 2015 08:27:57 +0100 [thread overview]
Message-ID: <20151202072757.GB15839@lst.de> (raw)
In-Reply-To: <CAH2r5muW6=v6tx3BwXSYMgn7EZgzVANniebsxfwpdq9Y=0VcuA@mail.gmail.com>
Hi Steve,
we have two APIs in Linux:
- the copy_file_range syscall which just is a "do a copy by any means"
- the btrfs clone ioctls which have stricter semantics that very much
expect a reflink-like operation
I plan to also wire up copy_file_range to try the clone_file_range method
first if available to make life easier for file systems, but as there isn't
any test coverage for that I don't dare to actually submit it yet. I'll
send a compile tested only RFC for it when resending this series.
next prev parent reply other threads:[~2015-12-02 7:27 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-26 18:50 vfs: move btrfs clone ioctls to common code Christoph Hellwig
2015-11-26 18:50 ` [PATCH 2/5] locks: new locks_mandatory_area calling convention Christoph Hellwig
[not found] ` <1448563859-21922-3-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2015-11-30 22:38 ` J. Bruce Fields
[not found] ` <20151130223830.GB31564-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-12-01 7:37 ` Christoph Hellwig
2015-11-26 18:50 ` [PATCH 3/5] vfs: pull btrfs clone API to vfs layer Christoph Hellwig
2015-11-26 18:50 ` [PATCH 4/5] nfsd: Pass filehandle to nfs4_preprocess_stateid_op() Christoph Hellwig
[not found] ` <1448563859-21922-1-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2015-11-26 18:50 ` [PATCH 1/5] cifs: implement clone_file_range operation Christoph Hellwig
[not found] ` <1448563859-21922-2-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2015-11-27 10:42 ` David Disseldorp
[not found] ` <20151127114232.5b367b7b-TzLh5lQYVSQb1SvskN2V4Q@public.gmane.org>
2015-11-30 9:02 ` Christoph Hellwig
2015-11-26 18:50 ` [PATCH 5/5] nfsd: implement the NFSv4.2 CLONE operation Christoph Hellwig
2015-11-30 22:56 ` vfs: move btrfs clone ioctls to common code J. Bruce Fields
2015-12-01 17:09 ` Chris Mason
2015-12-01 22:48 ` Steve French
2015-12-02 7:27 ` Christoph Hellwig [this message]
[not found] ` <20151202072757.GB15839-jcswGhMUV9g@public.gmane.org>
2015-12-02 17:40 ` Steve French
2015-12-03 10:30 ` Christoph Hellwig
[not found] ` <20151203103035.GA15996-jcswGhMUV9g@public.gmane.org>
2015-12-03 19:28 ` Steve French
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