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SubjectRe: [PATCH] quota: fix to propagate error of mark_dquot_dirty() to caller
On Fri 12-04-24 17:49:42, Chao Yu wrote:
> in order to let caller be aware of failure of mark_dquot_dirty().
>
> Signed-off-by: Chao Yu <chao@kernel.org>

Thanks. I've added the patch to my tree.

Honza

> ---
> fs/quota/dquot.c | 21 ++++++++++++++-------
> 1 file changed, 14 insertions(+), 7 deletions(-)
>
> diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
> index dacbee455c03..b2a109d8b198 100644
> --- a/fs/quota/dquot.c
> +++ b/fs/quota/dquot.c
> @@ -1737,7 +1737,7 @@ int __dquot_alloc_space(struct inode *inode, qsize_t number, int flags)
>
> if (reserve)
> goto out_flush_warn;
> - mark_all_dquot_dirty(dquots);
> + ret = mark_all_dquot_dirty(dquots);
> out_flush_warn:
> srcu_read_unlock(&dquot_srcu, index);
> flush_warnings(warn);
> @@ -1786,7 +1786,7 @@ int dquot_alloc_inode(struct inode *inode)
> warn_put_all:
> spin_unlock(&inode->i_lock);
> if (ret == 0)
> - mark_all_dquot_dirty(dquots);
> + ret = mark_all_dquot_dirty(dquots);
> srcu_read_unlock(&dquot_srcu, index);
> flush_warnings(warn);
> return ret;
> @@ -1990,7 +1990,7 @@ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to)
> qsize_t inode_usage = 1;
> struct dquot __rcu **dquots;
> struct dquot *transfer_from[MAXQUOTAS] = {};
> - int cnt, index, ret = 0;
> + int cnt, index, ret = 0, err;
> char is_valid[MAXQUOTAS] = {};
> struct dquot_warn warn_to[MAXQUOTAS];
> struct dquot_warn warn_from_inodes[MAXQUOTAS];
> @@ -2087,8 +2087,12 @@ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to)
> * mark_all_dquot_dirty().
> */
> index = srcu_read_lock(&dquot_srcu);
> - mark_all_dquot_dirty((struct dquot __rcu **)transfer_from);
> - mark_all_dquot_dirty((struct dquot __rcu **)transfer_to);
> + err = mark_all_dquot_dirty((struct dquot __rcu **)transfer_from);
> + if (err < 0)
> + ret = err;
> + err = mark_all_dquot_dirty((struct dquot __rcu **)transfer_to);
> + if (err < 0)
> + ret = err;
> srcu_read_unlock(&dquot_srcu, index);
>
> flush_warnings(warn_to);
> @@ -2098,7 +2102,7 @@ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to)
> for (cnt = 0; cnt < MAXQUOTAS; cnt++)
> if (is_valid[cnt])
> transfer_to[cnt] = transfer_from[cnt];
> - return 0;
> + return ret;
> over_quota:
> /* Back out changes we already did */
> for (cnt--; cnt >= 0; cnt--) {
> @@ -2726,6 +2730,7 @@ static int do_set_dqblk(struct dquot *dquot, struct qc_dqblk *di)
> struct mem_dqblk *dm = &dquot->dq_dqb;
> int check_blim = 0, check_ilim = 0;
> struct mem_dqinfo *dqi = &sb_dqopt(dquot->dq_sb)->info[dquot->dq_id.type];
> + int ret;
>
> if (di->d_fieldmask & ~VFS_QC_MASK)
> return -EINVAL;
> @@ -2807,7 +2812,9 @@ static int do_set_dqblk(struct dquot *dquot, struct qc_dqblk *di)
> else
> set_bit(DQ_FAKE_B, &dquot->dq_flags);
> spin_unlock(&dquot->dq_dqb_lock);
> - mark_dquot_dirty(dquot);
> + ret = mark_dquot_dirty(dquot);
> + if (ret < 0)
> + return ret;
>
> return 0;
> }
> --
> 2.40.1
>
--
Jan Kara <jack@suse.com>
SUSE Labs, CR

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