On Wed, 27 Oct 2004, Alexandre Oliva wrote: > On Oct 26, 2004, "Robert P. J. Day" <rpjday@xxxxxxxxxxxxxx> wrote: > > > but, once again, if the FS is mounted read only, how will that page > > "eventually make it to disk", as you describe it? > > If the page is marked as dirty, it will eventually be flushed to > disk. Pages are below the FS layer, so whether the FS is read only or > read write won't matter at all if the page is marked as dirty. > > Not to mention the fact that the OS could very well think it was > writing to a different filesystem but, due to memory corruption, ends > up overwriting bits of the read-only filesystem. ah, now i see. just to clarify, does *all* filesystem access (including NTFS) go thru the VFS? or are there some filesystems that differ sufficiently from the VFS model that they provide their own ... access implementations? (not sure that's the best way to phrase it, but i'm sure you know what i mean.) rday