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From: "Pádraig Brady" <P@draigBrady.com>
To: Anna Schumaker <Anna.Schumaker@netapp.com>,
	linux-nfs@vger.kernel.org, linux-btrfs@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, linux-api@vger.kernel.org,
	zab@zabbo.net, viro@zeniv.linux.org.uk, clm@fb.com,
	darrick.wong@oracle.com, mtk.manpages@gmail.com,
	andros@netapp.com, hch@infradead.org
Subject: Re: [PATCH v6 5/4] copy_file_range.2: New page documenting copy_file_range()
Date: Fri, 16 Oct 2015 22:42:40 +0100	[thread overview]
Message-ID: <56216F50.7030705@draigBrady.com> (raw)
In-Reply-To: <1445029707-31549-6-git-send-email-Anna.Schumaker@Netapp.com>

It's probably worth mentioning the sparse expansion caveat
in the docs, as it's important and not obvious.

I.E. copy_file_range() could be called from, but would
still benefit from a user space app using a SEEK_{HOLE,DATA} loop.

thanks,
Pádraig.
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WARNING: multiple messages have this Message-ID (diff)
From: "Pádraig Brady" <P@draigBrady.com>
To: Anna Schumaker <Anna.Schumaker@netapp.com>,
	linux-nfs@vger.kernel.org, linux-btrfs@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, linux-api@vger.kernel.org,
	zab@zabbo.net, viro@zeniv.linux.org.uk, clm@fb.com,
	darrick.wong@oracle.com, mtk.manpages@gmail.com,
	andros@netapp.com, hch@infradead.org
Subject: Re: [PATCH v6 5/4] copy_file_range.2: New page documenting copy_file_range()
Date: Fri, 16 Oct 2015 22:42:40 +0100	[thread overview]
Message-ID: <56216F50.7030705@draigBrady.com> (raw)
In-Reply-To: <1445029707-31549-6-git-send-email-Anna.Schumaker@Netapp.com>

It's probably worth mentioning the sparse expansion caveat
in the docs, as it's important and not obvious.

I.E. copy_file_range() could be called from, but would
still benefit from a user space app using a SEEK_{HOLE,DATA} loop.

thanks,
Pádraig.

  parent reply	other threads:[~2015-10-16 21:42 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-16 21:08 [PATCH v6 0/4] VFS: In-kernel copy system call Anna Schumaker
2015-10-16 21:08 ` Anna Schumaker
2015-10-16 21:08 ` [PATCH v6 1/4] vfs: add copy_file_range syscall and vfs helper Anna Schumaker
2015-10-16 21:08   ` Anna Schumaker
2015-10-16 21:08 ` [PATCH v6 2/4] x86: add sys_copy_file_range to syscall tables Anna Schumaker
2015-10-16 21:08   ` Anna Schumaker
     [not found] ` <1445029707-31549-1-git-send-email-Anna.Schumaker-ZwjVKphTwtPQT0dZR+AlfA@public.gmane.org>
2015-10-16 21:08   ` [PATCH v6 3/4] btrfs: add .copy_file_range file operation Anna Schumaker
2015-10-16 21:08     ` Anna Schumaker
2015-10-16 21:08     ` Anna Schumaker
2015-10-16 21:08   ` [PATCH v6 4/4] vfs: Add vfs_copy_file_range() support for pagecache copies Anna Schumaker
2015-10-16 21:08     ` Anna Schumaker
2015-10-16 21:08     ` Anna Schumaker
2015-10-16 21:08 ` [PATCH v6 5/4] copy_file_range.2: New page documenting copy_file_range() Anna Schumaker
2015-10-16 21:08   ` Anna Schumaker
     [not found]   ` <1445029707-31549-6-git-send-email-Anna.Schumaker-ZwjVKphTwtPQT0dZR+AlfA@public.gmane.org>
2015-10-16 21:21     ` Andreas Dilger
2015-10-16 21:21       ` Andreas Dilger
2015-10-16 21:42   ` Pádraig Brady [this message]
2015-10-16 21:42     ` Pádraig Brady
2015-10-18 18:30   ` Christoph Hellwig
2015-10-19 20:45     ` J. Bruce Fields
     [not found]       ` <20151019204503.GA15214-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2015-10-19 21:03         ` Christoph Hellwig
2015-10-19 21:03           ` Christoph Hellwig
2015-10-20  9:41 ` [PATCH v6 0/4] VFS: In-kernel copy system call Zhao Lei
2015-10-20  9:41   ` Zhao Lei

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