Re: [PATCH v3 4/4] fs/sysv: Replace kmap() with kmap_local_page()

[Al Viro]

On Thu, Jan 19, 2023 at 04:32:32PM +0100, Fabio M. De Francesco wrote:
> @@ -228,6 +239,12 @@ int sysv_delete_entry(struct sysv_dir_entry *de, struct page *page)
>  {
>  	struct inode *inode = page->mapping->host;
>  	loff_t pos = page_offset(page) + offset_in_page(de);
> +	/*
> +	 * The "de" dentry points somewhere in the same page whose we need the
> +	 * address of; therefore, we can simply get the base address "kaddr" by
> +	 * masking the previous with PAGE_MASK.
> +	 */
> +	char *kaddr = (char *)((unsigned long)de & PAGE_MASK);

er...  ITYM "therefore we can pass de to dir_put_page() and get rid of that kaddr
thing"...

Anyway, with that change the series rebased and applied on top of Christoph's sysv
patch.