kernel/linux.git/fs/dlm/config.c, branch linux-7.1.y

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

dlm: Constify struct configfs_item_operations and configfs_group_operations

2026-01-20T18:07:31+00:00

'struct configfs_item_operations' and 'configfs_group_operations' are not modified in this driver. Constifying these structures moves some data to a read-only section, so increases overall security, especially when the structure holds some function pointers. On a x86_64, with allmodconfig, as an example: Before: ====== text data bss dec hex filename 29436 12952 384 42772 a714 fs/dlm/config.o After: ===== text data bss dec hex filename 30076 12312 384 42772 a714 fs/dlm/config.o Signed-off-by: Christophe JAILLET Signed-off-by: Alexander Aring Signed-off-by: David Teigland

dlm: add new configfs entry release_recover for lockspace members

2025-08-12T16:32:09+00:00

A new configfs entry is added for a lockspace member: /config/dlm//spaces//nodes//release_recover release_recover can be set to 1 by userspace (dlm_controld process) prior to removing the lockspace member (rmdir of the ). This tells the kernel to handle the removed member as if it had failed, i.e. recovery steps for a failed node should be perfomed, as opposed to the recovery steps for a node doing a controlled leave. Signed-off-by: Alexander Aring Signed-off-by: David Teigland

dlm: reject SCTP configuration if not enabled

2025-04-30T14:26:34+00:00

Reject SCTP dlm configuration if the kernel was never build with SCTP. Currently the only one known user space tool "dlm_controld" will drop an error in the logs and getting stuck. This behaviour should be fixed to deliver an error to the user or fallback to TCP. Signed-off-by: Alexander Aring Reviewed-by: Heming zhao Signed-off-by: David Teigland

dlm: return -ENOENT if no comm was found

2024-12-19T19:11:24+00:00

Currently if no comm can be found dlm_comm_seq() returns -EEXIST which means entry already exists for a lookup it makes no sense to return -EEXIST. We change it to -ENOENT. There is no user that will evaluate the return value on a specific value so this should be fine. Signed-off-by: Alexander Aring Signed-off-by: David Teigland

dlm: dlm_config_info config fields to unsigned int

2024-10-04T15:31:31+00:00

We are using kstrtouint() to parse common integer fields. This patch will switch to use unsigned int instead of int as we are parsing unsigned integer values. Signed-off-by: Alexander Aring Signed-off-by: David Teigland

dlm: use dlm_config as only cluster configuration

2024-10-04T15:31:31+00:00

This patch removes the configfs storage fields from the dlm_cluster structure to store per cluster values. Those fields also exists for the dlm_config global variable and get stored in both when setting configfs values. To read values it will always be read out from the dlm_cluster configfs structure but this patch changes it to only use the global dlm_config variable. Storing them in two places makes no sense as both are able to be changed under certain conditions during DLM runtime. Signed-off-by: Alexander Aring Signed-off-by: David Teigland

dlm: handle port as __be16 network byte order

2024-10-04T15:31:31+00:00

This patch handles the DLM listen port setting internally as byte order as it is a value that is used as network byte on the wire. The user space still sets this value as host byte order for configfs as we don't break UAPI here. Signed-off-by: Alexander Aring Signed-off-by: David Teigland

dlm: disallow different configs nodeid storages

2024-10-04T15:31:31+00:00

The DLM configfs path has usually a nodeid in it's directory path and again a file to store the nodeid again in a separate storage. It is forced that the user space will set both (the directory name and nodeid file) storage to the same value if it doesn't do that we run in some kind of broken state. This patch will simply represent the file storage to it's upper directory nodeid name. It will force the user now to use a valid unsigned int as nodeid directory name and will ignore all nodeid writes in the nodeid file storage as this will now always represent the upper nodeid directory name. Signed-off-by: Alexander Aring Signed-off-by: David Teigland