lkml.org 
[lkml]   [2002]   [Jan]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: Possible Idea with filesystem buffering.
    Rik van Riel wrote:

    >On Tue, 22 Jan 2002, Chris Mason wrote:
    >
    >>It seems like the basic features we are suggesting are very close, I'll try
    >>one last time to make a case against the 'free_some_pages' call ;-)
    >>
    >
    >>The FS doesn't know how long a page has been dirty, or how often it
    >>gets used,
    >>
    >
    >In an efficient system, the FS will never get to know this, either.
    >

    I don't understand this statement. If dereferencing a vfs op for every
    page aging is too expensive, then ask it to age more than one page at a
    time. Or do I miss your meaning?

    >
    >
    >The whole idea behind the VFS and the VM is that calls to the FS
    >are avoided as much as possible, in order to keep the system fast.
    >
    In other words, you write the core of our filesystem for us, and we
    write the parts that don't interest you?

    Maybe this is the real meat of the issue?

    Hans



    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 13:15    [W:0.021 / U:8.020 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site