Messages in this thread | | | From | Kirill Korotaev <> | Subject | Again: Fix multithread coredump deadlock (patch Manfred Spraul) | Date | Thu, 3 Jul 2003 12:38:10 +0400 |
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Hi!
There was a patch some time ago included in linux-2.4.17-pre6 which fixed mmap semaphore deadlock in do_coredump (double down_read() on mmap_sem). This fix introduces down_write() on mmap_sem and uses get_user_pages() function to avoid do_page_fault(). The question is why down_write() is used in elf_core_dump() (instead of down_read())?
Kirill
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