linux-kernel - Re: [PATCH v3 3/4] zram: make deduplication feature optional

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Date:   Tue, 25 Apr 2017 19:24:40 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To:     js1304@...il.com
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Minchan Kim <minchan@...nel.org>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        linux-kernel@...r.kernel.org, kernel-team@....com,
        Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: Re: [PATCH v3 3/4] zram: make deduplication feature optional

Hello,

On (04/21/17 10:14), js1304@...il.com wrote:
[..]
>  int zram_dedup_init(struct zram *zram, size_t num_pages);
>  void zram_dedup_fini(struct zram *zram);
> +#else
> +
> +static inline u64 zram_dedup_dup_size(struct zram *zram) { return 0; }
> +static inline u64 zram_dedup_meta_size(struct zram *zram) { return 0; }
> +
> +static inline void zram_dedup_insert(struct zram *zram, struct zram_entry *new,
> +			u32 checksum) { }
> +static inline struct zram_entry *zram_dedup_find(struct zram *zram,
> +			struct page *page, u32 *checksum) { return NULL; }
> +
> +static inline void zram_dedup_init_entry(struct zram *zram,
> +			struct zram_entry *entry, unsigned long handle,
> +			unsigned int len) { }
> +static inline bool zram_dedup_put_entry(struct zram *zram,
> +			struct zram_entry *entry) { return true; }
> +
> +static inline int zram_dedup_init(struct zram *zram,
> +			size_t num_pages) { return 0; }
> +static inline void zram_dedup_fini(struct zram *zram) { }
> +
> +#endif

doesn't compile on CONFIG_ZRAM=m config.

	-ss