From a1177825719ccef3f76ef39bbfd5ebb6087d53c7 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Tue, 3 Jul 2012 16:45:29 +0200 Subject: quota: Move quota syncing to ->sync_fs method Since the moment writes to quota files are using block device page cache and space for quota structures is reserved at the moment they are first accessed we have no reason to sync quota before inode writeback. In fact this order is now only harmful since quota information can easily change during inode writeback (either because conversion of delayed-allocated extents or simply because of allocation of new blocks for simple filesystems not using page_mkwrite). So move syncing of quota information after writeback of inodes into ->sync_fs method. This way we do not have to use ->quota_sync callback which is primarily intended for use by quotactl syscall anyway and we get rid of calling ->sync_fs() twice unnecessarily. We skip quota syncing for OCFS2 since it does proper quota journalling in all cases (unlike ext3, ext4, and reiserfs which also support legacy non-journalled quotas) and thus there are no dirty quota structures. CC: "Theodore Ts'o" CC: Joel Becker CC: reiserfs-devel@vger.kernel.org Acked-by: Steven Whitehouse Acked-by: Dave Kleikamp Reviewed-by: Christoph Hellwig Signed-off-by: Jan Kara Signed-off-by: Al Viro --- fs/ext4/super.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'fs/ext4/super.c') diff --git a/fs/ext4/super.c b/fs/ext4/super.c index eb7aa3e4ef05..d8759401ecae 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -4325,6 +4325,11 @@ static int ext4_sync_fs(struct super_block *sb, int wait) trace_ext4_sync_fs(sb, wait); flush_workqueue(sbi->dio_unwritten_wq); + /* + * Writeback quota in non-journalled quota case - journalled quota has + * no dirty dquots + */ + dquot_writeback_dquots(sb, -1); if (jbd2_journal_start_commit(sbi->s_journal, &target)) { if (wait) jbd2_log_wait_commit(sbi->s_journal, target); -- cgit v1.2.2