search for: derefernce

...linux/init/main.c:init() has a chicken/egg problem. Apparently modprobe and other programs need a pipe and pipefs isn't mounted until later on in do_basic_setup()/do_initcalls(). That means that linux/fs/pipe.c:static struct vfsmount *pipe_mnt; isn't initialized and blows up when it's derefernced in linux/fs/pipe.c:get_pipe_inode(). Has this been discussed before? Is there something that userspace can wait on until pipefs is mounted or more of the kernel is initialized? I did some searching and I just can't turn up a previous discussion about this - my apologies if it's already...

...> static int port_cost(struct net_device *dev) > > { > > if (dev->ethtool_ops->get_settings) { > > ^^^^ > > > > As far as I can figure out, dev->ethtool_ops is NULL and the crash > > happens while trying to derefernce ...->get_settings. > > > > Is dev->ethtool_ops allowed to be NULL? In this case the appended > > patch might be the correct fix. At least it makes the oops disappear > > for me. Another possible fix would be to add an ethtool_ops structure > > to the device c...

On Tue, Jul 7, 2015 at 7:36 AM, Gioh Kim <gioh.kim at lge.com> wrote: > From: Gioh Kim <gurugio at hanmail.net> > > Add framework to register callback functions and check page mobility. > There are some modes for page isolation so that isolate interface > has arguments of page address and isolation mode while putback > interface has only page address as argument. >

On Tue, Jul 7, 2015 at 7:36 AM, Gioh Kim <gioh.kim at lge.com> wrote: > From: Gioh Kim <gurugio at hanmail.net> > > Add framework to register callback functions and check page mobility. > There are some modes for page isolation so that isolate interface > has arguments of page address and isolation mode while putback > interface has only page address as argument. >

From: Gioh Kim <gurugio at hanmail.net> Hello, This series try to enable migration of non-LRU pages, such as driver's page. My ARM-based platform occured severe fragmentation problem after long-term (several days) test. Sometimes even order-3 page allocation failed. It has memory size 512MB ~ 1024MB. 30% ~ 40% memory is consumed for graphic processing and 20~30 memory is reserved for

From: Gioh Kim <gurugio at hanmail.net> Hello, This series try to enable migration of non-LRU pages, such as driver's page. My ARM-based platform occured severe fragmentation problem after long-term (several days) test. Sometimes even order-3 page allocation failed. It has memory size 512MB ~ 1024MB. 30% ~ 40% memory is consumed for graphic processing and 20~30 memory is reserved for