Messages in this thread | | | Date | Fri, 13 Mar 1998 00:17:29 -0500 (EST) | From | "Benjamin C.R. LaHaise" <> | Subject | Re: 2.1.89 |
| |
On Wed, 11 Mar 1998, Stephen C. Tweedie wrote:
> Hi, > > On Tue, 10 Mar 1998 12:40:03 +1300 (NZDT), "Peter T. Waltenberg" > <peterw@karaka.chch.cri.nz> said: > > > VM: Found a writable swap-cached page! > > VM: Found a writable swap-cached page! > > ... > > What sort of load are you running on this box? Much in the way of > memory mapped files, cloned threads or anything else that might help > me home in on this?
If he is running clones, there is a race I just noticed between fork and mmap that can lead to unexpected results (this fix is included in the rev_pte patch). Here's the tidbit from kernel/fork.c:
if (retval) goto free_mm; + down(&mm->mmap_sem); retval = dup_mmap(mm); + up(&mm->mmap_sem); if (retval) goto free_pt;
-ben
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu
| |