On Thu 10-09-20 16:48:24, Christoph Hellwig wrote:
> Set up a readahead size by default, as very few users have a good
> reason to change it.
>
> Signed-off-by: Christoph Hellwig <[email protected]>
> Acked-by: David Sterba <[email protected]> [btrfs]
> Acked-by: Richard Weinberger <[email protected]> [ubifs, mtd]
Looks good but what about coda, ecryptfs, and orangefs? Currenly they have
readahead disabled and this patch would seem to enable it?
> diff --git a/mm/backing-dev.c b/mm/backing-dev.c
> index 8e8b00627bb2d8..2dac3be6127127 100644
> --- a/mm/backing-dev.c
> +++ b/mm/backing-dev.c
> @@ -746,6 +746,8 @@ struct backing_dev_info *bdi_alloc(int node_id)
> kfree(bdi);
> return NULL;
> }
> + bdi->ra_pages = VM_READAHEAD_PAGES;
> + bdi->io_pages = VM_READAHEAD_PAGES;
Won't this be more logical in bdi_init() than in bdi_alloc()?
Honza
--
Jan Kara <[email protected]>
SUSE Labs, CR
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