From ed1f8855dd7b82a0ad87960b1729a3e848dc5589 Mon Sep 17 00:00:00 2001 From: Israel Batista Date: Wed, 29 Oct 2025 19:56:32 +0000 Subject: [PATCH] mm: change type of parameter for memory_notify memory_notify() is responsible for sending events related to memory hotplugging to a notification queue. Since all the events must match one of the values from the enum memory_block_state, it is appropriate to change the function parameter type to make this condition explicit at compile time. Link: https://lkml.kernel.org/r/20251029195617.2210700-4-linux@israelbatista.dev.br Signed-off-by: Israel Batista Acked-by: Mike Rapoport (Microsoft) Cc: David Hildenbrand Cc: Lorenzo Stoakes Cc: Omar Sandoval Cc: Randy Dunlap Signed-off-by: Andrew Morton --- drivers/base/memory.c | 4 ++-- include/linux/memory.h | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 3d17dd7749470..c03f3b5e5e6f0 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -204,9 +204,9 @@ static ssize_t state_show(struct device *dev, struct device_attribute *attr, return sysfs_emit(buf, "%s\n", output); } -int memory_notify(unsigned long val, void *v) +int memory_notify(enum memory_block_state state, void *v) { - return blocking_notifier_call_chain(&memory_chain, val, v); + return blocking_notifier_call_chain(&memory_chain, state, v); } #if defined(CONFIG_MEMORY_FAILURE) && defined(CONFIG_MEMORY_HOTPLUG) diff --git a/include/linux/memory.h b/include/linux/memory.h index ca20cbdd71f25..ca3eb1db6cc87 100644 --- a/include/linux/memory.h +++ b/include/linux/memory.h @@ -141,7 +141,7 @@ static inline int register_memory_notifier(struct notifier_block *nb) static inline void unregister_memory_notifier(struct notifier_block *nb) { } -static inline int memory_notify(unsigned long val, void *v) +static inline int memory_notify(enum memory_block_state state, void *v) { return 0; } @@ -165,7 +165,7 @@ int create_memory_block_devices(unsigned long start, unsigned long size, struct memory_group *group); void remove_memory_block_devices(unsigned long start, unsigned long size); extern void memory_dev_init(void); -extern int memory_notify(unsigned long val, void *v); +extern int memory_notify(enum memory_block_state state, void *v); extern struct memory_block *find_memory_block(unsigned long section_nr); typedef int (*walk_memory_blocks_func_t)(struct memory_block *, void *); extern int walk_memory_blocks(unsigned long start, unsigned long size, -- 2.47.3