ufs write safety

David Kewley kewley at gps.caltech.edu
Wed May 25 23:13:50 UTC 2005


On Wednesday 25 May 2005 16:07, Dave Jones wrote:
> On Wed, May 25, 2005 at 03:59:16PM -0700, David Kewley wrote:
>  > Thanks *very* much, Dave -- it's good to hear this from someone
>  > highly involved in the kernel.  I'll take your advice.
>  >
>  > I am using UFS and XFS in RHEL4 by rebuilding the kernel with
>  > those filesystems enabled.  The filesystems appear to work fine; I
>  > know others are also using XFS in RHEL4.
>
> beware: XFS can use *lots* of stack space in certain conditions,
> which really doesn't play too nicely with the 4KB stack size.

Thanks, and acknowledged.  I looked into 4k vs 8k stacks before I 
started using XFS on RHEL4.  My conclusion was that I'm safe because I 
have x86_64, which has 8k stacks.  Is that reasonable, or are stack 
items twice as big on 64- as on 32-bit, so that you still run a risk 
with 8k stacks on 64-bit?

David




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