Re: [PATCH 3/6] shmem: account for large order folios

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On Fri, Sep 15, 2023 at 09:51:26AM +0000, Daniel Gomez wrote:
> @@ -1810,13 +1815,14 @@ static void shmem_set_folio_swapin_error(struct inode *inode, pgoff_t index,
>  		return;
>  
>  	folio_wait_writeback(folio);
> +	num_swap_pages = folio_nr_pages(folio);
>  	delete_from_swap_cache(folio);
>  	/*
>  	 * Don't treat swapin error folio as alloced. Otherwise inode->i_blocks
>  	 * won't be 0 when inode is released and thus trigger WARN_ON(i_blocks)
>  	 * in shmem_evict_inode().
>  	 */
> -	shmem_recalc_inode(inode, -1, -1);
> +	shmem_recalc_inode(inode, num_swap_pages, num_swap_pages);

Shouldn't that be -num_swap_pages?

>  	swap_free(swap);
>  }
>  
> @@ -1903,7 +1909,7 @@ static int shmem_swapin_folio(struct inode *inode, pgoff_t index,
>  	if (error)
>  		goto failed;
>  
> -	shmem_recalc_inode(inode, 0, -1);
> +	shmem_recalc_inode(inode, 0, folio_nr_pages(folio));
>  
>  	if (sgp == SGP_WRITE)
>  		folio_mark_accessed(folio);

Also here.



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