On Mon, May 08, 2006 at 10:26:15PM +0200, Michael Kerrisk wrote: > tags 365754 fixed-upstream > thanks > > Hello Justin, > > [...] > > > > Okay -- that look good. But it's strange, I'm not seeing the > > > same as you on SUSE 10.0, glibc 2.3.5. Do you have another Linux > > > to hand to test? > > I just tested on another Debian machine with the same results for > > fopen "rm". > > > > But another machine did only an anonymous mmap: > > > > 2.6.12-1-amd64-k8-smp > > glibc 2.3.6 > > > > I note the following differences: > > Native POSIX Threads Library by Ulrich Drepper et al and > > libthread_db work sponsored by Alpha Processor Inc > > > > vs. > > > > linuxthreads-0.10 by Xavier Leroy (on kobun64). > > > > On a 32 bit radhat machine, the same thing; this time, linuxthreads > > and libthread_db. Linux 2.4.22-1.2199.nptl and glibc 2.3.3. > > > > Alan didn't have strace installed on a different redhat machine, so I > > copied mine, and again it didn't mmap the file. Again, linuxthreads > > and libthread_db. glibc 2.3.3, and Linux 2.6.10-1.771_FC2. > > > > I note that this functionality requires the compile-time conditional > > _G_HAVE_MMAP. > > Hmmm -- it is all a bit strange. There are some other factors > going on that aren't obvious. Anyway, I've added the following > text for man-pages-2.32: > > m (since glibc 2.3) > Attempt to access the file using mmap(2), > rather than I/O system calls (read(2), > write(2)). Currently, use of mmap(2) is only > attempted for a file opened for reading. > > Thanks for you report and all the testing. It occurs to me that this could be a part of the Debian patch; either something not yet included upstream, or included in a release later than glibc 2.3, but with the patch included by Debian anyway.
Google didn't reveal too much, and there's nothing in the .diff.gz indicating that this is true .. I donno. Justin -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
