Implement the ability to hotunplug a uio device while file handles are still open without crashing. The "locking" for hotunplug support is implemented in a generic library, that should be reusable to make this kind of support easier to add in other pieces of the kernel. I'm re-submitting this patch originally authored by Eric W. Biederman. See: https://lkml.org/lkml/2010/9/20/21 I have made minor modifications for making it compile with the latest kernel version (3.18.0-rc7+). I have tested this patch on Greg's staging-next branch with a fake hotplug driver that I wrote. The code for the fake hotplug driver is available here: https://github.com/mandeepsandhu/uio-hotplug-test I would like to attribute the patch to Eric, as he's the original author and can possibly be the maintainer for fs/libunload.c? I can put my name in "Tested-by" if people are satisified with the fake test program I wrote. Mandeep Sandhu (4): staging: uio: Simplify the lifetime logic of struct uio_device. staging: uio: Remove unused uio_info mmap method. staging: libunload: A library to help remove open files staging: uio: Implement hotunplug support, using libunload drivers/uio/uio.c | 305 ++++++++++++++++++++++++++++++++------------- fs/Makefile | 2 +- fs/libunload.c | 169 +++++++++++++++++++++++++ include/linux/uio_driver.h | 16 +-- include/linux/unload.h | 35 ++++++ 5 files changed, 427 insertions(+), 100 deletions(-) create mode 100644 fs/libunload.c create mode 100644 include/linux/unload.h -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
