Re: [RFC][PATCH 14/14] tmpfs whiteout support

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On 5/14/07, Hugh Dickins <[email protected]> wrote:
On Mon, 14 May 2007, Bharata B Rao wrote:
> From: Jan Blunck <[email protected]>
> Subject: tmpfs whiteout support
>
> Introduce whiteout support to tmpfs.
>
> Signed-off-by: Jan Blunck <[email protected]>
> Signed-off-by: Bharata B Rao <[email protected]>
> ---
>  mm/shmem.c |    9 ++++++++-
>  1 files changed, 8 insertions(+), 1 deletion(-)
>
> --- a/mm/shmem.c
> +++ b/mm/shmem.c
> @@ -74,7 +74,7 @@
>  #define LATENCY_LIMIT         64
>
>  /* Pretend that each entry is of this size in directory's i_size */
> -#define BOGO_DIRENT_SIZE 20
> +#define BOGO_DIRENT_SIZE 1

Why would that change be needed for whiteout support?


Good question. It seems that this a survivor of the changes necessary
for union readdir. This isn't necessary for white-outs.

BTW: Why do we claim this to be 20??? Is there any meaning behind this?

Cheers,
Jan
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