Hi,
On Wed, 6 Feb 2002, Andrew Morton wrote:
> Any filesystem which implements its own mmap() method, and which
> does not call generic_file_mmap() needs to be changed to clear
> VM_IO inside its mmap function. All in-kernel filesystems are
> OK, as is XFS. And the only breakage this can cause to out-of-kernel
> filesystems is failure to include mappings in core files, and
> inability to use PEEKUSR.
You forgot shared memory via mm/shmem.c and ipc/shm.c.
Another possibility is to test whether the driver provides a nopage
function, as i/o areas are usually mapped with io_remap_page_range. The
only exception I found are drivers under drivers/sgi/char, which use some
really dirty tricks in their nopage function.
bye, Roman
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu Feb 07 2002 - 21:01:00 EST