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

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Message-ID: <YDsleDjeIcpuBXKA@google.com>
Date:   Sat, 27 Feb 2021 21:09:12 -0800
From:   Jaegeuk Kim <jaegeuk@...nel.org>
To:     Chao Yu <yuchao0@...wei.com>
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

On 02/04, Chao Yu wrote:
> 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?

I'm stuck on testing the patches, since the latest kernel is panicking somehow.
Let me update later, once I can test a bit. :(

> 
> 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;
> > +		}
> > +