2008/1/23, Miklos Szeredi <[EMAIL PROTECTED]>: > > > Also, it still doesn't make sense to me why we'd not need to walk the > > > rmap, it is all the same file after all. > > > > It's the same file, but not the same memory map. It basically depends > > on how you define msync: > > > > a) sync _file_ on region defined by this mmap/start/end-address > > b) sync _memory_region_ defined by start/end-address > > My mmap/msync tester program can acually check this as well, with the > '-f' flag. Anton, can you try that on the reference platforms?
Here it is: $ ./a.out file -f begin 1201085546 1201085546 1200956936 write 1201085546 1201085546 1200956936 mmap 1201085546 1201085546 1200956936 b 1201085546 1201085546 1200956936 msync b 1201085550 1201085550 1200956936 c 1201085550 1201085550 1200956936 msync c 1201085552 1201085552 1200956936 d 1201085552 1201085552 1200956936 munmap 1201085552 1201085552 1200956936 close 1201085555 1201085555 1200956936 sync 1201085555 1201085555 1200956936 $ ./a.out file -sf begin 1201085572 1201085572 1200956936 write 1201085572 1201085572 1200956936 mmap 1201085572 1201085572 1200956936 b 1201085572 1201085572 1200956936 msync b 1201085576 1201085576 1200956936 c 1201085576 1201085576 1200956936 msync c 1201085578 1201085578 1200956936 d 1201085578 1201085578 1200956936 munmap 1201085578 1201085578 1200956936 close 1201085581 1201085581 1200956936 sync 1201085581 1201085581 1200956936 $ uname -a FreeBSD td152.testdrive.hp.com 6.2-RELEASE FreeBSD 6.2-RELEASE #0: Fri Jan 12 11:05:30 UTC 2007 [EMAIL PROTECTED]:/usr/obj/usr/src/sys/SMP i386 $ > > Miklos > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
