linux-kernel - Re: [PATCH] f2fs: fix to check i_compr

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Message-ID: <20200310161838.GB240315@google.com>
Date:   Tue, 10 Mar 2020 09:18:38 -0700
From:   Jaegeuk Kim <jaegeuk@...nel.org>
To:     Chao Yu <chao@...nel.org>
Cc:     Chao Yu <yuchao0@...wei.com>,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] f2fs: fix to check i_compr_blocks correctly

On 03/10, Chao Yu wrote:
> Hi Jaegeuk,
> 
> On 2020-2-25 18:26, Chao Yu wrote:
> > inode.i_blocks counts based on 512byte sector, we need to convert
> > to 4kb sized block count before comparing to i_compr_blocks.
> > 
> > In addition, add to print message when sanity check on inode
> > compression configs failed.
> > 
> > Signed-off-by: Chao Yu <yuchao0@...wei.com>
> > ---
> >  fs/f2fs/inode.c | 23 ++++++++++++++++++++---
> >  1 file changed, 20 insertions(+), 3 deletions(-)
> > 
> > diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
> > index 156cc5ef3044..299611562f7e 100644
> > --- a/fs/f2fs/inode.c
> > +++ b/fs/f2fs/inode.c
> > @@ -291,13 +291,30 @@ static bool sanity_check_inode(struct inode *inode, struct page *node_page)
> >  			fi->i_flags & F2FS_COMPR_FL &&
> >  			F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
> >  						i_log_cluster_size)) {
> > -		if (ri->i_compress_algorithm >= COMPRESS_MAX)
> > +		if (ri->i_compress_algorithm >= COMPRESS_MAX) {
> > +			f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
> > +				"compress algorithm: %u, run fsck to fix",
> > +				  __func__, inode->i_ino,
> > +				  ri->i_compress_algorithm);
> >  			return false;
> > -		if (le64_to_cpu(ri->i_compr_blocks) > inode->i_blocks)
> > +		}
> > +		if (le64_to_cpu(ri->i_compr_blocks) >
> > +				SECTOR_TO_BLOCK(inode->i_blocks)) {
> > +			f2fs_warn(sbi, "%s: inode (ino=%lx) hash inconsistent "
> 
> This is a typo: hash -> has
> 
> Could you please manually fix this in your tree?

Done.

> 
> Thanks
> 
> > +				"i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix",
> > +				  __func__, inode->i_ino,
> > +				  le64_to_cpu(ri->i_compr_blocks),
> > +				  SECTOR_TO_BLOCK(inode->i_blocks));
> >  			return false;
> > +		}
> >  		if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
> > -			ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE)
> > +			ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) {
> > +			f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
> > +				"log cluster size: %u, run fsck to fix",
> > +				  __func__, inode->i_ino,
> > +				  ri->i_log_cluster_size);
> >  			return false;
> > +		}
> >  	}
> > 
> >  	return true;
> >