[Bug 26642] New: Automatically clean dirty bit on ext2/ext4-without-journal file systems

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https://bugzilla.kernel.org/show_bug.cgi?id=26642

           Summary: Automatically clean dirty bit on
                    ext2/ext4-without-journal file systems
           Product: File System
           Version: 2.5
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: ext4
        AssignedTo: fs_ext4@xxxxxxxxxxxxxxxxxxxx
        ReportedBy: t.artem@xxxxxxxxxxxx
        Regression: No


In ext2/journalless ext4 if you forget to umount the FS before
rebooting/powering down PC you'll have to run fsck on a next boot. That's
obvious.

However we can easily avoid fsck'ing if we clean the dirty bit about a certain
timeout (I suggest a configurable 300 seconds value) and only after dirty
buffers have been flushed to the disk. If we write to the disk again, then this
bit should be set again, of course.

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