> > > > page_add_file_rmap() just counts an event where mapcount goes 0->1. > > > Even if thousands process shares a page, it's just counted into file_mapped as 1. > > > > > > Then, there are 480MB of mapped file caches. Do I miss something ? > > > > > > Anyway, sum-of-all-lru-of-highmem is 480MB smaller than present pages. > > > and isolated(anon/file) is 0kB. > > > (NORMAL has similar problem) > > > > hugetlb files? But it's a desktop box. Figo, what's your meminfo? > > > > The GEM objects may be files not in LRU, however they should be > > accounted into shmem. > > > > Figo, would you run "page-types -r" for some clues? It can be compiled > > from the kernel tree: > > > > cd linux > > make Documentation/vm > > sudo Documentation/vm/page-types -r > > hi fengguang, > here is the "page-types -r" result: > > flags page-count MB symbolic-flags > long-symbolic-flags > 0x0000000000005828 74342 290 ___U_l_____Ma_b___________________ uptodate,lru,mmap,anonymous,swapbacked > 0x0000000000005868 373077 1457 ___U_lA____Ma_b___________________ uptodate,lru,active,mmap,anonymous,swapbacked 1457+290=1747MB. that's ok. and this is very different result with your previous oom log. can you please try 1) invoke oom 2) get page-types -r again. I'm curious that oom makes page accounting lost again. I mean, please send us oom log and "page-types -r" result. thanks. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>