linux-kernel - Re: [PATCH v4] f2fs: compress: add compress

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Message-ID: <46e9924c-0086-cd2a-2e93-7149b92ba27e@huawei.com>
Date:   Thu, 4 Feb 2021 11:25:25 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     <jaegeuk@...nel.org>
CC:     <linux-f2fs-devel@...ts.sourceforge.net>,
        <linux-kernel@...r.kernel.org>, <chao@...nel.org>
Subject: Re: [PATCH v4] f2fs: compress: add compress_inode to cache compressed
 blockst

Jaegeuk,

On 2021/2/2 16:00, Chao Yu wrote:
> -	for (i = 0; i < dic->nr_cpages; i++) {
> +	for (i = 0; i < cc->nr_cpages; i++) {
>   		struct page *page = dic->cpages[i];

por_fsstress still hang in this line?

Thanks,

>   		block_t blkaddr;
>   		struct bio_post_read_ctx *ctx;
> @@ -2201,6 +2207,14 @@ int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret,
>   		blkaddr = data_blkaddr(dn.inode, dn.node_page,
>   						dn.ofs_in_node + i + 1);
>   
> +		f2fs_wait_on_block_writeback(inode, blkaddr);
> +
> +		if (f2fs_load_compressed_page(sbi, page, blkaddr)) {
> +			if (atomic_dec_and_test(&dic->remaining_pages))
> +				f2fs_decompress_cluster(dic);
> +			continue;
> +		}
> +