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    DateMon, 4 Dec 2006 11:36:09 -0800
    FromAndrew Morton <>
    SubjectRe: [patch] remove redundant iov segment check
    On Mon, 4 Dec 2006 08:26:36 -0800
    "Chen, Kenneth W" <kenneth.w.chen@intel.com> wrote:
    
    > So it's not possible to call down to generic_file_aio_read/write with invalid
    > iov segment.  Patch proposed to delete these redundant code.
    
    erp, please don't touch that code.
    
    The writev deadlock fixes which went into 2.6.17 trashed writev()
    performance and Nick and I are slowly trying to get it back, while fixing
    the has-been-there-forever pagefault-in-write() deadlock.
    
    This is all proving very hard to do, and we don't need sweeping code
    cleanups happening under our feet ;)
    
    I'll bring those patches back in next -mm, but not very confidently.
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