I actually prototypes this patch independetly a while ago, and in addition to the data writeout when removing O_SYNC there are the following caveats: - O_SYNC is not actually one flag, but two: O_DSYNC and __O_SYNC. setfl() needs to make sure __O_SYNC cannot be in f_flags without O_DSYNC also beeing present. - we need to audit all filesystems that they don't do stupid things when the O_SYNC flags appear or disappear during a write, that is make sure it is checked in just one place. The generic write code is fine in that respect, but I didn't go through all filesystems to verify it yet. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
