Re: [PATCH 4/8] exofs: address_space_operations

[Marcin Slusarz <marcin.slusarz@gmail.com>]

Boaz Harrosh wrote:
> (...)
> +struct page_collect {
> +	struct exofs_sb_info *sbi;
> +	struct request_queue *req_q;
> +	struct inode *inode;
> +	unsigned expected_pages;
> +
> +	struct bio *bio;
> +	unsigned nr_pages;
> +	unsigned long length;
> +	long pg_first;
> +};
> (...)
> +int pcol_try_alloc(struct page_collect *pcol)
> +{
> +	int pages = min_t(unsigned, pcol->expected_pages, BIO_MAX_PAGES);
> +
> +	for (; pages; pages >>= 1) {
> +		pcol->bio = bio_alloc(GFP_KERNEL, pages);
> +		if (likely(pcol->bio))
> +			return 0;
> +	}
> +
> +	EXOFS_ERR("Failed to kcalloc expected_pages=%d\n",

%u

> +		  pcol->expected_pages);
> +	return -ENOMEM;
> +}
> +
> (...)
> +static int __readpages_done(struct osd_request *or, struct page_collect *pcol,
> +			    bool do_unlock)
> +{
> +	struct bio_vec *bvec;
> +	int i;
> +	u64 resid;
> +	u64 good_bytes;
> +	u64 length = 0;
> +	int ret = exofs_check_ok_resid(or, &resid, NULL);
> +
> +	osd_end_request(or);
> +
> +	if (!ret)
> +		good_bytes = pcol->length;
> +	else if (ret && !resid)
> +		good_bytes = 0;
> +	else
> +		good_bytes = pcol->length - resid;

Second ret check is not needed.

> (...)
> +
> +int read_exec(struct page_collect *pcol, bool is_sync)

read_exec is too generic name for globally visible symbol

> +{
> (...)
> +static void writepages_done(struct osd_request *or, void *p)
> +{
> +	struct page_collect *pcol = p;
> +	struct bio_vec *bvec;
> +	int i;
> +	u64 resid;
> +	u64  good_bytes;
> +	u64  length = 0;
> +
> +	int ret = exofs_check_ok_resid(or, NULL, &resid);
> +
> +	osd_end_request(or);
> +	atomic_dec(&pcol->sbi->s_curr_pending);
> +
> +	if (likely(!ret))
> +		good_bytes = pcol->length;
> +	else if (ret && !resid)
> +		good_bytes = 0;
> +	else
> +		good_bytes = pcol->length - resid;

Ret check again.

> (...)
> +
> +int write_exec(struct page_collect *pcol)

Too generic name.

> (...)