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Date: Thu, 16 Jul 2015 10:35:16 +0800
From: Junxiao Bi <junxiao.bi@...cle.com>
To: Jan Kara <jack@...e.com>, linux-fsdevel@...r.kernel.org
CC: Dave Kleikamp <shaggy@...nel.org>,
jfs-discussion@...ts.sourceforge.net,
Mark Fasheh <mfasheh@...e.com>, reiserfs-devel@...r.kernel.org,
linux-ext4@...r.kernel.org, ocfs2-devel@....oracle.com
Subject: Re: [Ocfs2-devel] [PATCH 4/6] ocfs2: Handle error from dquot_initialize()
On 07/15/2015 08:42 PM, Jan Kara wrote:
> dquot_initialize() can now return error. Handle it where possible.
>
> Signed-off-by: Jan Kara <jack@...e.com>
Looks good.
Reviewed-by: Junxiao Bi <junxiao.bi@...cle.com>
> ---
> fs/ocfs2/file.c | 14 ++++++++----
> fs/ocfs2/namei.c | 59 +++++++++++++++++++++++++++++++++++++------------
> fs/ocfs2/refcounttree.c | 5 +++--
> 3 files changed, 58 insertions(+), 20 deletions(-)
>
> diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
> index 4d9e8275ed99..7210583b472f 100644
> --- a/fs/ocfs2/file.c
> +++ b/fs/ocfs2/file.c
> @@ -105,8 +105,11 @@ static int ocfs2_file_open(struct inode *inode, struct file *file)
> file->f_path.dentry->d_name.len,
> file->f_path.dentry->d_name.name, mode);
>
> - if (file->f_mode & FMODE_WRITE)
> - dquot_initialize(inode);
> + if (file->f_mode & FMODE_WRITE) {
> + status = dquot_initialize(inode);
> + if (status)
> + goto leave;
> + }
>
> spin_lock(&oi->ip_lock);
>
> @@ -1155,8 +1158,11 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
> if (status)
> return status;
>
> - if (is_quota_modification(inode, attr))
> - dquot_initialize(inode);
> + if (is_quota_modification(inode, attr)) {
> + status = dquot_initialize(inode);
> + if (status)
> + return status;
> + }
> size_change = S_ISREG(inode->i_mode) && attr->ia_valid & ATTR_SIZE;
> if (size_change) {
> status = ocfs2_rw_lock(inode, 1);
> diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
> index 6e6abb93fda5..948681e37cfd 100644
> --- a/fs/ocfs2/namei.c
> +++ b/fs/ocfs2/namei.c
> @@ -200,11 +200,12 @@ bail:
> static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode)
> {
> struct inode *inode;
> + int status;
>
> inode = new_inode(dir->i_sb);
> if (!inode) {
> mlog(ML_ERROR, "new_inode failed!\n");
> - return NULL;
> + return ERR_PTR(-ENOMEM);
> }
>
> /* populate as many fields early on as possible - many of
> @@ -213,7 +214,10 @@ static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode)
> if (S_ISDIR(mode))
> set_nlink(inode, 2);
> inode_init_owner(inode, dir, mode);
> - dquot_initialize(inode);
> + status = dquot_initialize(inode);
> + if (status)
> + return ERR_PTR(status);
> +
> return inode;
> }
>
> @@ -264,7 +268,11 @@ static int ocfs2_mknod(struct inode *dir,
> (unsigned long long)OCFS2_I(dir)->ip_blkno,
> (unsigned long)dev, mode);
>
> - dquot_initialize(dir);
> + status = dquot_initialize(dir);
> + if (status) {
> + mlog_errno(status);
> + return status;
> + }
>
> /* get our super block */
> osb = OCFS2_SB(dir->i_sb);
> @@ -311,8 +319,9 @@ static int ocfs2_mknod(struct inode *dir,
> }
>
> inode = ocfs2_get_init_inode(dir, mode);
> - if (!inode) {
> - status = -ENOMEM;
> + if (IS_ERR(inode)) {
> + status = PTR_ERR(inode);
> + inode = NULL;
> mlog_errno(status);
> goto leave;
> }
> @@ -708,7 +717,11 @@ static int ocfs2_link(struct dentry *old_dentry,
> if (S_ISDIR(inode->i_mode))
> return -EPERM;
>
> - dquot_initialize(dir);
> + err = dquot_initialize(dir);
> + if (err) {
> + mlog_errno(err);
> + return err;
> + }
>
> err = ocfs2_double_lock(osb, &old_dir_bh, old_dir,
> &parent_fe_bh, dir, 0);
> @@ -896,7 +909,11 @@ static int ocfs2_unlink(struct inode *dir,
> (unsigned long long)OCFS2_I(dir)->ip_blkno,
> (unsigned long long)OCFS2_I(inode)->ip_blkno);
>
> - dquot_initialize(dir);
> + status = dquot_initialize(dir);
> + if (status) {
> + mlog_errno(status);
> + return status;
> + }
>
> BUG_ON(d_inode(dentry->d_parent) != dir);
>
> @@ -1230,8 +1247,16 @@ static int ocfs2_rename(struct inode *old_dir,
> old_dentry->d_name.len, old_dentry->d_name.name,
> new_dentry->d_name.len, new_dentry->d_name.name);
>
> - dquot_initialize(old_dir);
> - dquot_initialize(new_dir);
> + status = dquot_initialize(old_dir);
> + if (status) {
> + mlog_errno(status);
> + goto bail;
> + }
> + status = dquot_initialize(new_dir);
> + if (status) {
> + mlog_errno(status);
> + goto bail;
> + }
>
> osb = OCFS2_SB(old_dir->i_sb);
>
> @@ -1786,7 +1811,11 @@ static int ocfs2_symlink(struct inode *dir,
> trace_ocfs2_symlink_begin(dir, dentry, symname,
> dentry->d_name.len, dentry->d_name.name);
>
> - dquot_initialize(dir);
> + status = dquot_initialize(dir);
> + if (status) {
> + mlog_errno(status);
> + goto bail;
> + }
>
> sb = dir->i_sb;
> osb = OCFS2_SB(sb);
> @@ -1831,8 +1860,9 @@ static int ocfs2_symlink(struct inode *dir,
> }
>
> inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO);
> - if (!inode) {
> - status = -ENOMEM;
> + if (IS_ERR(inode)) {
> + status = PTR_ERR(inode);
> + inode = NULL;
> mlog_errno(status);
> goto bail;
> }
> @@ -2485,8 +2515,9 @@ int ocfs2_create_inode_in_orphan(struct inode *dir,
> }
>
> inode = ocfs2_get_init_inode(dir, mode);
> - if (!inode) {
> - status = -ENOMEM;
> + if (IS_ERR(inode)) {
> + status = PTR_ERR(inode);
> + inode = NULL;
> mlog_errno(status);
> goto leave;
> }
> diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
> index b69dd14c0b9b..7dc818b87cd8 100644
> --- a/fs/ocfs2/refcounttree.c
> +++ b/fs/ocfs2/refcounttree.c
> @@ -4419,8 +4419,9 @@ static int ocfs2_vfs_reflink(struct dentry *old_dentry, struct inode *dir,
> }
>
> mutex_lock(&inode->i_mutex);
> - dquot_initialize(dir);
> - error = ocfs2_reflink(old_dentry, dir, new_dentry, preserve);
> + error = dquot_initialize(dir);
> + if (!error)
> + error = ocfs2_reflink(old_dentry, dir, new_dentry, preserve);
> mutex_unlock(&inode->i_mutex);
> if (!error)
> fsnotify_create(dir, new_dentry);
>
--
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