linux-kernel - Re: [PATCH v2 0/2] btrfs: send: fix sending link commands for existing file paths

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Date:   Tue, 12 Jul 2022 15:52:01 +0100
From:   Filipe Manana <fdmanana@...nel.org>
To:     bingjingc <bingjingc@...ology.com>
Cc:     josef@...icpanda.com, dsterba@...e.com, clm@...com,
        linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        robbieko@...ology.com, bxxxjxxg@...il.com
Subject: Re: [PATCH v2 0/2] btrfs: send: fix sending link commands for
 existing file paths

On Tue, Jul 12, 2022 at 09:36:30AM +0800, bingjingc wrote:
> From: BingJing Chang <bingjingc@...ology.com>
> 
> There is a bug sending link commands for existing file paths. When we're
> processing an inode, we go over all references. All the new file paths are
> added to the "new_refs" list. And all the deleted file paths are added to
> the "deleted_refs" list. In the end, when we finish processing the inode,
> we iterate over all the items in the "new_refs" list and send link commands
> for those file paths. After that, we go over all the items in the
> "deleted_refs" list and send unlink commands for them. If there are
> duplicated file paths in both lists, we will try to create them before we
> remove them. Then the receiver gets an -EEXIST error when trying the link
> operations.
> 
> BingJing Chang (2):
>   btrfs: send: introduce recorded_ref_alloc and recorded_ref_free
>   btrfs: send: fix sending link commands for existing file paths
> 
>  fs/btrfs/send.c | 195 ++++++++++++++++++++++++++++++++++++++++++++----
>  1 file changed, 181 insertions(+), 14 deletions(-)

Looks good now, thanks.

Reviewed-by: Filipe Manana <fdmanana@...e.com>

Also, are you planning on submitting a test case for fstests too?

> 
> -- 
> 2.37.0
>