I'm re-submitting this patch originally authored by Eric W. Biederman. See: https://lkml.org/lkml/2010/9/20/21 <original-summary> Implement the ability to hot-unplug 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. </original-summary> I have made minor modifications for making it compile with the latest kernel version (3.19.0-rc2). I have tested this patch on Greg's char-misc tree 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 hotplug driver I wrote. Mandeep Sandhu (4): uio: Simplify the lifetime logic of struct uio_device. uio: Remove unused uio_info mmap method. libunload: A library to help remove open files 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
