:Another interim solution would be to `fix' GNU grep so it doesn't :attempt to read() into mmap()'d space. (Having not looked at the :code, I don't know how difficult this would be). : :As for the general problem, is it sensible to allow a read-only file to :be mmap'd R/W (with or without MAP_PRIVATE) and then written into? It :would be fairly easy to make mmap() return EACCES if the fd was not :open for writing (or map the memory R/O and SEGV on a write). : :I would personally prefer to see a process die with an mmap failure :(or SIGSEGV), rather than cause a deadlock - ie even if we do want/ :...
We really need to fix the kernel, I think. This sort of deadlock situation has been a problem for too long and it is only going to get worse as more programs use mmap(). -Matt To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-current" in the body of the message