Re: rmap.c: try_to_unmap_file(): VM_LOCKED not respected

[William Lee Irwin III]

On Mon, Jun 13, 2005 at 10:14:05PM -0700, li nux wrote:
> My application is using remap_file_pages and mlocks
> those pages.
> So in the code of  try_to_unmap_file (see below),
> I should never reach the call to try_to_unmap_cluster,
> because for those pages VM_LOCKED is always set.
> But, under heavy load I am seeing try_to_unmap_cluster
> is getting called. Stack:

Does your app use remap_file_pages() before mlock()?

If so, the VM may be trying to reclaim pages between the call to
remap_file_pages() and the call to mlock().


-- wli
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