Re: introducing __GFP_PANIC

Cyrill Gorcunov
2009-05-04T11:10:30Z

[David Rientjes - Mon, May 04, 2009 at 03:56:10AM -0700]
| On Mon, 4 May 2009, Cyrill Gorcunov wrote:
|
| > @@ -1685,7 +1687,12 @@ nopage:
| > dump_stack();
| > show_mem();
| > }
| > - return page;
| > + if (unlikely((gfp_mask & __GFP_PANIC))) {
|
| Too many parentheses and this doesn't need the unnecessary braces.

Thanks David, fixed (old games /with other flags/ rudiment).

|
| > + panic("Out of memory: panic due to __GFP_PANIC.\n"
| > + "%s order:%d, mode:0x%x\n", p->comm,
| > + order, gfp_mask);
|
| The extra newline in this statement doesn't seem necessary, it's just one
| less line that will be visible on the frozen screen. I also think calling
| this 'gfp_mask' instead of 'mode' is more appropriate just like the oom
| killer does.

ok, convinced. Maybe even make it shorter like
"Panic due to __GFP_PANIC: %s order:%d, gfp_mask:0x%x\n"
Hmm?

|
| > + }
| > + return NULL;
| > got_pg:
| > if (kmemcheck_enabled)
| > kmemcheck_pagealloc_alloc(page, order, gfp_mask);
| >
|
-- Cyrill