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    SubjectRe: 2.4.21-pre2 stalls out when running unixbench

    On Sat, 2003-01-04 at 11:11, Andrew Morton wrote:

    > This is because of differences in how sync() is handled between 2.4.20's
    > ext3 and 2.4.21-pre2's.
    > 2.4.21-pre2:
    > sync() will start the commit, and will wait on it. So you know that
    > when it returns, everything which was dirty is now tight on disk.
    > So yes, running a looping sync while someone else is writing stuff
    > will take much longer in 2.4.21-pre2, because that kernel actually
    > waits on the writeout.

    Actually, I'm wondering if we should back that particular bit out. For
    a user with a hundred mounted filesystems, syncing each one in order,
    sequentially, is going to suck (and we don't currently have a simple way
    in 2.4 to detect which syncs are on separate spindles and so can be


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