All of lore.kernel.org
 help / color / mirror / Atom feed
From: Dave Chinner <david@fromorbit.com>
To: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: sandeen@redhat.com, linux-nfs@vger.kernel.org,
	linux-cifs@vger.kernel.org, linux-unionfs@vger.kernel.org,
	linux-xfs@vger.kernel.org, linux-mm@kvack.org,
	linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	ocfs2-devel@oss.oracle.com
Subject: Re: [PATCH 25/28] xfs: support returning partial reflink results
Date: Mon, 22 Oct 2018 13:14:39 +1100	[thread overview]
Message-ID: <20181022021439.GT6311@dastard> (raw)
In-Reply-To: <154013867727.29026.14417615066515846065.stgit@magnolia>

On Sun, Oct 21, 2018 at 09:17:57AM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@oracle.com>
> 
> Back when the XFS reflink code only supported clone_file_range, we were
> only able to return zero or negative error codes to userspace.  However,
> now that copy_file_range (which returns bytes copied) can use XFS'
> clone_file_range, we have the opportunity to return partial results.
> For example, if userspace sends a 1GB clone request and we run out of
> space halfway through, we at least can tell userspace that we completed
> 512M of that request like a regular write.
> 
> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

Looks ok to me. remap_file_range() still returns the full length,
so there's no change of behaviour there.

Reviewed-by: Dave Chinner <dchinner@redhat.com>

-- 
Dave Chinner
david@fromorbit.com

WARNING: multiple messages have this Message-ID
From: Dave Chinner <david@fromorbit.com>
To: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: sandeen@redhat.com, linux-nfs@vger.kernel.org,
	linux-cifs@vger.kernel.org, linux-unionfs@vger.kernel.org,
	linux-xfs@vger.kernel.org, linux-mm@kvack.org,
	linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	ocfs2-devel@oss.oracle.com
Subject: [Ocfs2-devel] [PATCH 25/28] xfs: support returning partial reflink results
Date: Mon, 22 Oct 2018 13:14:39 +1100	[thread overview]
Message-ID: <20181022021439.GT6311@dastard> (raw)
In-Reply-To: <154013867727.29026.14417615066515846065.stgit@magnolia>

On Sun, Oct 21, 2018 at 09:17:57AM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@oracle.com>
> 
> Back when the XFS reflink code only supported clone_file_range, we were
> only able to return zero or negative error codes to userspace.  However,
> now that copy_file_range (which returns bytes copied) can use XFS'
> clone_file_range, we have the opportunity to return partial results.
> For example, if userspace sends a 1GB clone request and we run out of
> space halfway through, we at least can tell userspace that we completed
> 512M of that request like a regular write.
> 
> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

Looks ok to me. remap_file_range() still returns the full length,
so there's no change of behaviour there.

Reviewed-by: Dave Chinner <dchinner@redhat.com>

-- 
Dave Chinner
david at fromorbit.com

  reply	other threads:[~2018-10-22  2:14 UTC|newest]

Thread overview: 83+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-21 16:15 [PATCH v6 00/28] fs: fixes for serious clone/dedupe problems Darrick J. Wong
2018-10-21 16:15 ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:15 ` [PATCH 01/28] vfs: vfs_clone_file_prep_inodes should return EINVAL for a clone from beyond EOF Darrick J. Wong
2018-10-21 16:15   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:15 ` [PATCH 02/28] vfs: check file ranges before cloning files Darrick J. Wong
2018-10-21 16:15   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:15 ` [PATCH 03/28] vfs: exit early from zero length remap operations Darrick J. Wong
2018-10-21 16:15   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:15 ` [PATCH 04/28] vfs: strengthen checking of file range inputs to generic_remap_checks Darrick J. Wong
2018-10-21 16:15   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:15 ` [PATCH 05/28] vfs: avoid problematic remapping requests into partial EOF block Darrick J. Wong
2018-10-21 16:15   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:15   ` Darrick J. Wong
2018-10-21 16:15 ` [PATCH 06/28] vfs: skip zero-length dedupe requests Darrick J. Wong
2018-10-21 16:15   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:15 ` [PATCH 07/28] vfs: rename vfs_clone_file_prep to be more descriptive Darrick J. Wong
2018-10-21 16:15   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:15 ` [PATCH 08/28] vfs: rename clone_verify_area to remap_verify_area Darrick J. Wong
2018-10-21 16:15   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:16 ` [PATCH 09/28] vfs: combine the clone and dedupe into a single remap_file_range Darrick J. Wong
2018-10-21 16:16   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:16 ` [PATCH 10/28] vfs: pass remap flags to generic_remap_file_range_prep Darrick J. Wong
2018-10-21 16:16   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:16 ` [PATCH 11/28] vfs: pass remap flags to generic_remap_checks Darrick J. Wong
2018-10-21 16:16   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:16   ` Darrick J. Wong
2018-10-21 16:16 ` [PATCH 12/28] vfs: remap helper should update destination inode metadata Darrick J. Wong
2018-10-21 16:16   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:16 ` [PATCH 13/28] vfs: make remap_file_range functions take and return bytes completed Darrick J. Wong
2018-10-21 16:16   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:16 ` [PATCH 14/28] vfs: plumb remap flags through the vfs clone functions Darrick J. Wong
2018-10-21 16:16   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:16 ` [PATCH 15/28] vfs: plumb remap flags through the vfs dedupe functions Darrick J. Wong
2018-10-21 16:16   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:16 ` [PATCH 16/28] vfs: enable remap callers that can handle short operations Darrick J. Wong
2018-10-21 16:16   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:17 ` [PATCH 17/28] vfs: hide file range comparison function Darrick J. Wong
2018-10-21 16:17   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:17   ` Darrick J. Wong
2018-10-21 16:17 ` [PATCH 18/28] vfs: clean up generic_remap_file_range_prep return value Darrick J. Wong
2018-10-21 16:17   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:17   ` Darrick J. Wong
2018-10-21 16:17 ` [PATCH 19/28] ocfs2: truncate page cache for clone destination file before remapping Darrick J. Wong
2018-10-21 16:17   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:17 ` [PATCH 20/28] ocfs2: fix pagecache truncation prior to reflink Darrick J. Wong
2018-10-21 16:17   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:17 ` [PATCH 21/28] ocfs2: support partial clone range and dedupe range Darrick J. Wong
2018-10-21 16:17   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:17 ` [PATCH 22/28] ocfs2: remove ocfs2_reflink_remap_range Darrick J. Wong
2018-10-21 16:17   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:17 ` [PATCH 23/28] xfs: fix pagecache truncation prior to reflink Darrick J. Wong
2018-10-21 16:17   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:17   ` Darrick J. Wong
2018-10-21 16:17 ` [PATCH 24/28] xfs: clean up xfs_reflink_remap_blocks call site Darrick J. Wong
2018-10-21 16:17   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-22  2:11   ` Dave Chinner
2018-10-22  2:11     ` [Ocfs2-devel] " Dave Chinner
2018-10-21 16:17 ` [PATCH 25/28] xfs: support returning partial reflink results Darrick J. Wong
2018-10-21 16:17   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:17   ` Darrick J. Wong
2018-10-22  2:14   ` Dave Chinner [this message]
2018-10-22  2:14     ` [Ocfs2-devel] " Dave Chinner
2018-10-21 16:18 ` [PATCH 26/28] xfs: remove redundant remap partial EOF block checks Darrick J. Wong
2018-10-21 16:18   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-21 16:18 ` [PATCH 27/28] xfs: remove xfs_reflink_remap_range Darrick J. Wong
2018-10-21 16:18   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-22  2:17   ` Dave Chinner
2018-10-22  2:17     ` [Ocfs2-devel] " Dave Chinner
2018-10-21 16:18 ` [PATCH 28/28] xfs: remove [cm]time update from reflink calls Darrick J. Wong
2018-10-21 16:18   ` [Ocfs2-devel] " Darrick J. Wong
2018-10-22  2:18   ` Dave Chinner
2018-10-22  2:18     ` [Ocfs2-devel] " Dave Chinner
2018-10-22  2:21 ` [PATCH v6 00/28] fs: fixes for serious clone/dedupe problems Dave Chinner
2018-10-22  2:21   ` [Ocfs2-devel] " Dave Chinner
2018-10-22  4:37   ` Dave Chinner
2018-10-22  4:37     ` [Ocfs2-devel] " Dave Chinner
2018-10-22  4:52     ` Al Viro
2018-10-22  4:52       ` [Ocfs2-devel] " Al Viro
2018-10-22  5:08       ` Dave Chinner
2018-10-22  5:08         ` [Ocfs2-devel] " Dave Chinner
2018-10-22  5:42         ` Amir Goldstein
2018-10-22  6:55           ` Dave Chinner
2018-10-22  6:55             ` [Ocfs2-devel] " Dave Chinner

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20181022021439.GT6311@dastard \
    --to=david@fromorbit.com \
    --cc=darrick.wong@oracle.com \
    --cc=linux-btrfs@vger.kernel.org \
    --cc=linux-cifs@vger.kernel.org \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=linux-nfs@vger.kernel.org \
    --cc=linux-unionfs@vger.kernel.org \
    --cc=linux-xfs@vger.kernel.org \
    --cc=ocfs2-devel@oss.oracle.com \
    --cc=sandeen@redhat.com \
    --subject='Re: [PATCH 25/28] xfs: support returning partial reflink results' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.