Re: [PATCH 00/13] cross rename v4

[Linus Torvalds]

On Thu, Feb 13, 2014 at 9:28 AM, Miklos Szeredi <miklos@xxxxxxxxxx> wrote:
>>
>> I would suggest that whiteouts appear as otherwise negative dentries and that
>> they don't appear in getdents().
>
> I'd argue that this is an administration nightmare.  E.g. what if the
> a backup needs to be made of the rw layer?

The major issue is user space support.

So what do others that support this do?  Looking at the gitweb for
ls.c in coreutils, we find:

http://git.savannah.gnu.org/gitweb/?p=coreutils.git;a=blob;f=src/ls.c

    # ifdef DT_WHT
                    case DT_WHT:  type = whiteout;          break;
    # endif

so that's presumably what we should use.

                     Linus
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