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

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Date:   Thu, 4 Mar 2021 12:20:18 -0800
From:   Jaegeuk Kim <jaegeuk@...nel.org>
To:     Chao Yu <yuchao0@...wei.com>
Cc:     linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [f2fs-dev] [PATCH v4] f2fs: compress: add compress_inode to
 cache compressed blockst

On 02/27, Jaegeuk Kim wrote:
> 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. :(

It seems this works without error.
https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git/commit/?h=dev&id=4e6e1364dccba80ed44925870b97fbcf989b96c9

> 
> > 
> > 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;
> > > +		}
> > > +
> 
> 
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