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Subject: Re: [PATCH] fs: gfs2: Use IS_ERR_OR_NULL
To:     Andreas Gruenbacher <agruenba@redhat.com>
CC:     <linux-kernel@vger.kernel.org>, Bob Peterson <rpeterso@redhat.com>,
        <cluster-devel@redhat.com>
References: <20190605142428.84784-1-wangkefeng.wang@huawei.com>
 <20190611162326.26967-1-agruenba@redhat.com>
From:   Kefeng Wang <wangkefeng.wang@huawei.com>
Message-ID: <723b26e2-fb94-0634-1f58-fdd9eabae945@huawei.com>
Date:   Wed, 12 Jun 2019 09:07:28 +0800
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On 2019/6/12 0:23, Andreas Gruenbacher wrote:
> Kefeng,
> 
> On Wed, 5 Jun 2019 at 16:17, Kefeng Wang <wangkefeng.wang@huawei.com> wrote:
>> Use IS_ERR_OR_NULL where appropriate.
> 
> It seems there are several more instances in which IS_ERR_OR_NULL should
> be used (see below).
> 

Right, will collect the following changes and send a new one, thanks.

> Thanks,
> Andreas
> 
> ---
>  fs/gfs2/dir.c        | 2 +-
>  fs/gfs2/glock.c      | 2 +-
>  fs/gfs2/inode.c      | 2 +-
>  fs/gfs2/ops_fstype.c | 2 +-
>  4 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
> index 3925efd3fd83..761a37a3c656 100644
> --- a/fs/gfs2/dir.c
> +++ b/fs/gfs2/dir.c
> @@ -753,7 +753,7 @@ static struct gfs2_dirent *gfs2_dirent_split_alloc(struct inode *inode,
>  	struct gfs2_dirent *dent;
>  	dent = gfs2_dirent_scan(inode, bh->b_data, bh->b_size,
>  				gfs2_dirent_find_offset, name, ptr);
> -	if (!dent || IS_ERR(dent))
> +	if (IS_ERR_OR_NULL(dent))
>  		return dent;
>  	return do_init_dirent(inode, dent, name, bh,
>  			      (unsigned)(ptr - (void *)dent));
> diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
> index 15c605cfcfc8..f6281470a182 100644
> --- a/fs/gfs2/glock.c
> +++ b/fs/gfs2/glock.c
> @@ -684,7 +684,7 @@ static void delete_work_func(struct work_struct *work)
>  		goto out;
>  
>  	inode = gfs2_lookup_by_inum(sdp, no_addr, NULL, GFS2_BLKST_UNLINKED);
> -	if (inode && !IS_ERR(inode)) {
> +	if (!IS_ERR_OR_NULL(inode)) {
>  		d_prune_aliases(inode);
>  		iput(inode);
>  	}
> diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
> index 998051c4aea7..1cc99da705fc 100644
> --- a/fs/gfs2/inode.c
> +++ b/fs/gfs2/inode.c
> @@ -796,7 +796,7 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
>  fail_gunlock:
>  	gfs2_dir_no_add(&da);
>  	gfs2_glock_dq_uninit(ghs);
> -	if (inode && !IS_ERR(inode)) {
> +	if (!IS_ERR_OR_NULL(inode)) {
>  		clear_nlink(inode);
>  		if (!free_vfs_inode)
>  			mark_inode_dirty(inode);
> diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
> index f5312f3b58ee..d35772d90b0a 100644
> --- a/fs/gfs2/ops_fstype.c
> +++ b/fs/gfs2/ops_fstype.c
> @@ -579,7 +579,7 @@ static int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh)
>  
>  		INIT_WORK(&jd->jd_work, gfs2_recover_func);
>  		jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1);
> -		if (!jd->jd_inode || IS_ERR(jd->jd_inode)) {
> +		if (IS_ERR_OR_NULL(jd->jd_inode)) {
>  			if (!jd->jd_inode)
>  				error = -ENOENT;
>  			else
>