Hugh Dickins wrote:
And thanks for your patch, which I've factored in with Frank's, and come
come up with the one below, against 2.6.14-rc2-mm2. Which uses no CONFIG
flag: I think we're enough out of the fast paths that it's not needed.
See comment in fs/proc/task_mmu.c for the principle. Could maintain
hiwater_vm straightforwardly, but I think it's easier to remember if
we handle them both in the same way.
I did look into doing the total_vm increment and calling vm_stat_account
in insert_vm_struct, but concluded it solved no particular problem, and
raised some questions (where architectures, notably ia64, have special
vmas which they may have good reason to leave out of total_vm).
I haven't cross-checked the mm_struct cacheline rearrangement yet,
it looks plausible, but could easily turn out to straddle boundaries.
Christoph, Frank, Jay: does this patch look like it fits your needs?
I am building a kernel with your patch and am going to run some test
to compare the statistics.
Thanks,
- jay
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