kernel.git/fs/nfs/sysfs.c, branch linux-6.10.y

NFS: Fix sysfs server name memory leak

2023-08-19T14:26:29Z

Free the formatted server index string after it has been duplicated by kobject_rename(). Fixes: 1c7251187dc0 ("NFS: add superblock sysfs entries") Reported-by: Alexander Aring Signed-off-by: Benjamin Coddington Tested-by: Ido Schimmel Signed-off-by: Trond Myklebust

NFS: Cancel all existing RPC tasks when shutdown

2023-06-19T19:08:46Z

Walk existing RPC tasks and cancel them with -EIO when the client is shutdown. Signed-off-by: Benjamin Coddington Signed-off-by: Trond Myklebust

NFS: add sysfs shutdown knob

2023-06-19T19:08:12Z

Within each nfs_server sysfs tree, add an entry named "shutdown". Writing 1 to this file will set the cl_shutdown bit on the rpc_clnt structs associated with that mount. If cl_shutdown is set, the task scheduler immediately returns -EIO for new tasks. Signed-off-by: Benjamin Coddington Signed-off-by: Trond Myklebust

NFS: Add sysfs links to sunrpc clients for nfs_clients

2023-06-19T19:04:13Z

For the general and state management nfs_client under each mount, create symlinks to their respective rpc_client sysfs entries. Signed-off-by: Benjamin Coddington Signed-off-by: Trond Myklebust

NFS: add superblock sysfs entries

2023-06-19T19:03:48Z

Create a sysfs directory for each mount that corresponds to the mount's nfs_server struct. As the mount is being constructed, use the name "server-n", but rename it to the "MAJOR:MINOR" of the mount after assigning a device_id. The rename approach allows us to populate the mount's directory with links to the various rpc_client objects during the mount's construction. The naming convention (MAJOR:MINOR) can be used to reference a particular NFS mount's sysfs tree. Signed-off-by: Benjamin Coddington Signed-off-by: Trond Myklebust

NFS: Make all of /sys/fs/nfs network-namespace unique

2023-06-19T18:59:51Z

Expand the NFS network-namespaced sysfs from /sys/fs/nfs/net down one level into /sys/fs/nfs by moving the "net" kobject onto struct nfs_netns_client and setting it up during network namespace init. This prepares the way for superblock kobjects within /sys/fs/nfs that will only be visible to matching network namespaces. Signed-off-by: Benjamin Coddington Signed-off-by: Trond Myklebust

NFS: Open-code the nfs_kset kset_create_and_add()

2023-06-19T18:59:07Z

In preparation to make objects below /sys/fs/nfs namespace aware, we need to define our own kobj_type for the nfs kset so that we can add the .child_ns_type member in a following patch. No functional change here, only the unrolling of kset_create_and_add(). Signed-off-by: Benjamin Coddington Signed-off-by: Trond Myklebust

NFS: rename nfs_client_kobj to nfs_net_kobj

2023-06-19T18:59:07Z

Match the variable names to the sysfs structure. Signed-off-by: Benjamin Coddington Signed-off-by: Trond Myklebust

NFS: rename nfs_client_kset to nfs_kset

2023-06-19T18:56:45Z

Be brief and match the subsystem name. There's no need to distinguish this kset variable from the server. Signed-off-by: Benjamin Coddington Signed-off-by: Trond Myklebust

Merge tag 'driver-core-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2022-12-16T11:54:54Z

Pull driver core updates from Greg KH: "Here is the set of driver core and kernfs changes for 6.2-rc1. The "big" change in here is the addition of a new macro, container_of_const() that will preserve the "const-ness" of a pointer passed into it. The "problem" of the current container_of() macro is that if you pass in a "const *", out of it can comes a non-const pointer unless you specifically ask for it. For many usages, we want to preserve the "const" attribute by using the same call. For a specific example, this series changes the kobj_to_dev() macro to use it, allowing it to be used no matter what the const value is. This prevents every subsystem from having to declare 2 different individual macros (i.e. kobj_const_to_dev() and kobj_to_dev()) and having the compiler enforce the const value at build time, which having 2 macros would not do either. The driver for all of this have been discussions with the Rust kernel developers as to how to properly mark driver core, and kobject, objects as being "non-mutable". The changes to the kobject and driver core in this pull request are the result of that, as there are lots of paths where kobjects and device pointers are not modified at all, so marking them as "const" allows the compiler to enforce this. So, a nice side affect of the Rust development effort has been already to clean up the driver core code to be more obvious about object rules. All of this has been bike-shedded in quite a lot of detail on lkml with different names and implementations resulting in the tiny version we have in here, much better than my original proposal. Lots of subsystem maintainers have acked the changes as well. Other than this change, included in here are smaller stuff like: - kernfs fixes and updates to handle lock contention better - vmlinux.lds.h fixes and updates - sysfs and debugfs documentation updates - device property updates All of these have been in the linux-next tree for quite a while with no problems" * tag 'driver-core-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (58 commits) device property: Fix documentation for fwnode_get_next_parent() firmware_loader: fix up to_fw_sysfs() to preserve const usb.h: take advantage of container_of_const() device.h: move kobj_to_dev() to use container_of_const() container_of: add container_of_const() that preserves const-ness of the pointer driver core: fix up missed drivers/s390/char/hmcdrv_dev.c class.devnode() conversion. driver core: fix up missed scsi/cxlflash class.devnode() conversion. driver core: fix up some missing class.devnode() conversions. driver core: make struct class.devnode() take a const * driver core: make struct class.dev_uevent() take a const * cacheinfo: Remove of_node_put() for fw_token device property: Add a blank line in Kconfig of tests device property: Rename goto label to be more precise device property: Move PROPERTY_ENTRY_BOOL() a bit down device property: Get rid of __PROPERTY_ENTRY_ARRAY_EL*SIZE*() kernfs: fix all kernel-doc warnings and multiple typos driver core: pass a const * into of_device_uevent() kobject: kset_uevent_ops: make name() callback take a const * kobject: kset_uevent_ops: make filter() callback take a const * kobject: make kobject_namespace take a const * ...