[lkml]   [2006]   [Sep]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [ckrm-tech] [PATCH 11/13] BC: vmrss (preparations)
Kirill Korotaev wrote:
> This patch does simple things:
> - intruduces an bc_magic field on beancunter to make sure
> union on struct page is correctly used in next patches
> - adds nr_beancounters
> - adds unused_privvmpages variable (counter of privvm pages
> which are not mapped into VM address space and thus potentially
> can be allocated later)
> +static inline void privvm_uncharge(struct beancounter *bc, unsigned long sz)
> +{
> + if (unlikely(bc->unused_privvmpages < sz)) {
> + printk("BC: overuncharging %d unused pages: val %lu held %lu\n",
> + bc->bc_id, sz, bc->unused_privvmpages);

I hit this path, when I do not enable CONFIG_BEANCOUNTERS_RSS. I suspect it has
something to do with the code in mod_rss_pages(). I suspect the that
CONFIG_BEANCOUNTERS_RSS needs to be enabled to get the accounting right.

In addition, Could you please make this a warning with KERN_WARNING.

> + sz = bc->unused_privvmpages;
> + }
> + bc->unused_privvmpages -= sz;
> + bc_update_privvmpages(bc);
> +}
> +

Balbir Singh,
Linux Technology Center,
IBM Software Labs
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2006-09-07 18:33    [W:0.240 / U:3.948 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site