From 78130819695f17f5c042d8ba097802639478faf5 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Tue, 25 Sep 2018 15:36:02 +0800 Subject: 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 Signed-off-by: Jaegeuk Kim --- fs/f2fs/file.c | 37 ++++++++++++++++++++++++++++--------- 1 file changed, 28 insertions(+), 9 deletions(-) (limited to 'fs/f2fs/file.c') diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 971463e0589e..88b124677189 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -2613,13 +2613,29 @@ static int f2fs_ioc_get_features(struct file *filp, unsigned long arg) } #ifdef CONFIG_QUOTA +int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid) +{ + struct dquot *transfer_to[MAXQUOTAS] = {}; + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct super_block *sb = sbi->sb; + int err = 0; + + transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); + if (!IS_ERR(transfer_to[PRJQUOTA])) { + err = __dquot_transfer(inode, transfer_to); + if (err) + set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); + dqput(transfer_to[PRJQUOTA]); + } + return err; +} + static int f2fs_ioc_setproject(struct file *filp, __u32 projid) { struct inode *inode = file_inode(filp); struct f2fs_inode_info *fi = F2FS_I(inode); struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct super_block *sb = sbi->sb; - struct dquot *transfer_to[MAXQUOTAS] = {}; struct page *ipage; kprojid_t kprojid; int err; @@ -2660,21 +2676,24 @@ static int f2fs_ioc_setproject(struct file *filp, __u32 projid) if (err) return err; - transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); - if (!IS_ERR(transfer_to[PRJQUOTA])) { - err = __dquot_transfer(inode, transfer_to); - dqput(transfer_to[PRJQUOTA]); - if (err) - goto out_dirty; - } + f2fs_lock_op(sbi); + err = f2fs_transfer_project_quota(inode, kprojid); + if (err) + goto out_unlock; F2FS_I(inode)->i_projid = kprojid; inode->i_ctime = current_time(inode); -out_dirty: f2fs_mark_inode_dirty_sync(inode, true); +out_unlock: + f2fs_unlock_op(sbi); return err; } #else +int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid) +{ + return 0; +} + static int f2fs_ioc_setproject(struct file *filp, __u32 projid) { if (projid != F2FS_DEF_PROJID) -- cgit v1.2.3