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f2fs: fix to keep project quota consistent
This patch does below changes to keep consistence of project quota data in sudden power-cut case: - update inode.i_projid and project quota atomically under lock_op() in f2fs_ioc_setproject() - recover inode.i_projid and project quota in recover_inode() Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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@ -2811,6 +2811,7 @@ void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count);
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int f2fs_precache_extents(struct inode *inode);
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long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
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long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
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int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid);
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int f2fs_pin_file_control(struct inode *inode, bool inc);
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/*
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@ -2613,13 +2613,29 @@ static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
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}
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#ifdef CONFIG_QUOTA
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int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
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{
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struct dquot *transfer_to[MAXQUOTAS] = {};
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struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
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struct super_block *sb = sbi->sb;
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int err = 0;
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transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
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if (!IS_ERR(transfer_to[PRJQUOTA])) {
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err = __dquot_transfer(inode, transfer_to);
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if (err)
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set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
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dqput(transfer_to[PRJQUOTA]);
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}
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return err;
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}
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static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
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{
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struct inode *inode = file_inode(filp);
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struct f2fs_inode_info *fi = F2FS_I(inode);
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struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
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struct super_block *sb = sbi->sb;
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struct dquot *transfer_to[MAXQUOTAS] = {};
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struct page *ipage;
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kprojid_t kprojid;
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int err;
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@ -2660,21 +2676,24 @@ static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
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if (err)
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return err;
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transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
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if (!IS_ERR(transfer_to[PRJQUOTA])) {
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err = __dquot_transfer(inode, transfer_to);
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dqput(transfer_to[PRJQUOTA]);
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if (err)
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goto out_dirty;
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}
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f2fs_lock_op(sbi);
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err = f2fs_transfer_project_quota(inode, kprojid);
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if (err)
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goto out_unlock;
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F2FS_I(inode)->i_projid = kprojid;
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inode->i_ctime = current_time(inode);
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out_dirty:
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f2fs_mark_inode_dirty_sync(inode, true);
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out_unlock:
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f2fs_unlock_op(sbi);
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return err;
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}
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#else
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int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
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{
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return 0;
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}
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static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
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{
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if (projid != F2FS_DEF_PROJID)
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@ -254,10 +254,18 @@ static int recover_inode(struct inode *inode, struct page *page)
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F2FS_FITS_IN_INODE(raw, le16_to_cpu(raw->i_extra_isize),
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i_projid)) {
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projid_t i_projid;
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kprojid_t kprojid;
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i_projid = (projid_t)le32_to_cpu(raw->i_projid);
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F2FS_I(inode)->i_projid =
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make_kprojid(&init_user_ns, i_projid);
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kprojid = make_kprojid(&init_user_ns, i_projid);
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if (!projid_eq(kprojid, F2FS_I(inode)->i_projid)) {
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err = f2fs_transfer_project_quota(inode,
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kprojid);
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if (err)
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return err;
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F2FS_I(inode)->i_projid = kprojid;
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}
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}
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}
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