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Sun, 09 Apr 2023 19:37:14 -0700 (PDT) Received: from localhost ([156.236.96.165]) by smtp.gmail.com with ESMTPSA id x2-20020a170902ea8200b001a1cf0744a2sm6509195plb.247.2023.04.09.19.37.12 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Sun, 09 Apr 2023 19:37:14 -0700 (PDT) Date: Mon, 10 Apr 2023 10:44:15 +0800 From: Yue Hu To: Jingbo Xu Cc: xiang@kernel.org, chao@kernel.org, linux-erofs@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/7] erofs: initialize packed inode after root inode is assigned Message-ID: <20230410104415.00006ad2.zbestahu@gmail.com> In-Reply-To: <20230407141710.113882-3-jefflexu@linux.alibaba.com> References: <20230407141710.113882-1-jefflexu@linux.alibaba.com> <20230407141710.113882-3-jefflexu@linux.alibaba.com> X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.32; i686-w64-mingw32) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 7 Apr 2023 22:17:05 +0800 Jingbo Xu wrote: > As commit 8f7acdae2cd4 ("staging: erofs: kill all failure handling in > fill_super()"), move the initialization of packed inode after root > inode is assigned, so that the iput() in .put_super() is adequate as > the failure handling. > > Otherwise, iput() is also needed in .kill_sb(), in case of the mounting > fails halfway. > > Signed-off-by: Jingbo Xu Reviewed-by: Yue Hu > --- > fs/erofs/internal.h | 1 + > fs/erofs/super.c | 22 +++++++++++----------- > 2 files changed, 12 insertions(+), 11 deletions(-) > > diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h > index 2bcff3194e4a..caea9dc1cd82 100644 > --- a/fs/erofs/internal.h > +++ b/fs/erofs/internal.h > @@ -157,6 +157,7 @@ struct erofs_sb_info { > > /* what we really care is nid, rather than ino.. */ > erofs_nid_t root_nid; > + erofs_nid_t packed_nid; > /* used for statfs, f_files - f_favail */ > u64 inos; > > diff --git a/fs/erofs/super.c b/fs/erofs/super.c > index 58ffbf410bfb..325602820dc8 100644 > --- a/fs/erofs/super.c > +++ b/fs/erofs/super.c > @@ -388,17 +388,7 @@ static int erofs_read_superblock(struct super_block *sb) > #endif > sbi->islotbits = ilog2(sizeof(struct erofs_inode_compact)); > sbi->root_nid = le16_to_cpu(dsb->root_nid); > -#ifdef CONFIG_EROFS_FS_ZIP > - sbi->packed_inode = NULL; > - if (erofs_sb_has_fragments(sbi) && dsb->packed_nid) { > - sbi->packed_inode = > - erofs_iget(sb, le64_to_cpu(dsb->packed_nid)); > - if (IS_ERR(sbi->packed_inode)) { > - ret = PTR_ERR(sbi->packed_inode); > - goto out; > - } > - } > -#endif > + sbi->packed_nid = le64_to_cpu(dsb->packed_nid); > sbi->inos = le64_to_cpu(dsb->inos); > > sbi->build_time = le64_to_cpu(dsb->build_time); > @@ -820,6 +810,16 @@ static int erofs_fc_fill_super(struct super_block *sb, struct fs_context *fc) > > erofs_shrinker_register(sb); > /* sb->s_umount is already locked, SB_ACTIVE and SB_BORN are not set */ > +#ifdef CONFIG_EROFS_FS_ZIP > + if (erofs_sb_has_fragments(sbi) && sbi->packed_nid) { > + sbi->packed_inode = erofs_iget(sb, sbi->packed_nid); > + if (IS_ERR(sbi->packed_inode)) { > + err = PTR_ERR(sbi->packed_inode); > + sbi->packed_inode = NULL; > + return err; > + } > + } > +#endif > err = erofs_init_managed_cache(sb); > if (err) > return err;