Messages in this thread Patch in this message | | | Date | Tue, 9 Nov 1999 16:52:37 +0100 (CET) | From | Andrea Arcangeli <> | Subject | Re: shm bug introduced with pagecache in 2.3.11 |
| |
On 9 Nov 1999, Christoph Rohland wrote:
> swap_duplicate > read_swap_cache_async > swapin_readahead > shm_nopage > handle_mm_fault > ...
Hmm, are you sure you reproduced it in UP as you stated in the previous email? The above trace seems the effect of this SMP race condition:
--- 2.3.26/mm/memory.c Sun Nov 7 17:33:38 1999 +++ /tmp/memory.c Tue Nov 9 16:46:02 1999 @@ -282,7 +282,9 @@ free_page_and_swap_cache(mem_map+nr); return 1; } + lock_kernel(); swap_free(pte_to_swp_entry(page)); + unlock_kernel(); return 0; } Andrea
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |