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    SubjectRe: 2.6.10-mm1
    Christoph Hellwig <> wrote:

    > > > add-page-becoming-writable-notification.patch
    > > > Add page becoming writable notification
    > >
    > > David, this still has the bogus address_space operation in addition to
    > > the vm_operation. page_mkwrite only fits into the vm_operations scheme,
    > > so please remove the address_space op. Also the code will be smaller
    > > and faster witout that indirection..
    > Here's the fix:

    That's not right either. Filesystems really shouldn't be overloading the
    vm_ops on memory mappings (as has been made clear to me) and the VM low-level
    paging routines shouldn't be touching a_ops (as has also been made clear to
    me). I also have other reasons I don't want to have ordinary files with
    specialised vm_ops.

    I suppose I could try and build a little knowledge about fscache into the
    VM... that might be reasonable.

    Remember also that your change is going to affect NFS too eventually, assuming
    NFS caching support ends up being done this way. It may also affect other
    filesystems, such as SMB/CIFS and Coda eventually should they partake of
    fscache services too.

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      Last update: 2005-03-22 14:09    [W:0.023 / U:8.512 seconds]
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