Re: Strange load spikes on 2.4.19 kernel

Hugh Dickins
2002-10-13T11:41:17Z

On 13 Oct 2002, Andi Kleen wrote:
>
> Still in 2.4 the VFS takes the big kernel lock unnecessarily for
> a few VFS operations (no matter if the underlying FS needs it or not).
> That's fixed in 2.5.

Something I was a bit surprised to notice recently: 2.5 still holds
big kernel lock around the potentially very lengthy vmtruncate() -
is that one still really necessary at VFS level?

Hugh