diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c index 7f86bc3eaadecc2e2496b400e790dd9fbcbe7b27..ac3657c651f6d32b2d277fbbd4664640d16ffffc 100644 --- a/arch/powerpc/platforms/pseries/hotplug-memory.c +++ b/arch/powerpc/platforms/pseries/hotplug-memory.c @@ -306,7 +306,7 @@ static int pseries_remove_memblock(unsigned long base, unsigned int memblock_siz nid = memory_add_physaddr_to_nid(base); for (i = 0; i < sections_per_block; i++) { - remove_memory(nid, base, MIN_MEMORY_BLOCK_SIZE); + __remove_memory(nid, base, MIN_MEMORY_BLOCK_SIZE); base += MIN_MEMORY_BLOCK_SIZE; } @@ -398,7 +398,7 @@ static int dlpar_remove_lmb(struct drmem_lmb *lmb) block_sz = pseries_memory_block_size(); nid = memory_add_physaddr_to_nid(lmb->base_addr); - remove_memory(nid, lmb->base_addr, block_sz); + __remove_memory(nid, lmb->base_addr, block_sz); /* Update memory regions for memory remove */ memblock_remove(lmb->base_addr, block_sz); diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c index 2ccfbb61ca89987d67d68da320251ba291a6982b..8fe0960ea572495d927ead4053c783e23a94631b 100644 --- a/drivers/acpi/acpi_memhotplug.c +++ b/drivers/acpi/acpi_memhotplug.c @@ -282,7 +282,7 @@ static void acpi_memory_remove_memory(struct acpi_memory_device *mem_device) nid = memory_add_physaddr_to_nid(info->start_addr); acpi_unbind_memory_blocks(info); - remove_memory(nid, info->start_addr, info->length); + __remove_memory(nid, info->start_addr, info->length); list_del(&info->list); kfree(info); } diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index 4915e6cd7fd56c76611371132fa6a70dc7b62a6c..6f13a5a33b5139dbb90a46ed6a7d24c45d13839c 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -303,6 +303,7 @@ extern bool is_mem_section_removable(unsigned long pfn, unsigned long nr_pages); extern void try_offline_node(int nid); extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages); extern void remove_memory(int nid, u64 start, u64 size); +extern void __remove_memory(int nid, u64 start, u64 size); #else static inline bool is_mem_section_removable(unsigned long pfn, @@ -319,6 +320,7 @@ static inline int offline_pages(unsigned long start_pfn, unsigned long nr_pages) } static inline void remove_memory(int nid, u64 start, u64 size) {} +static inline void __remove_memory(int nid, u64 start, u64 size) {} #endif /* CONFIG_MEMORY_HOTREMOVE */ extern void __ref free_area_init_core_hotplug(int nid); @@ -333,7 +335,6 @@ extern void move_pfn_range_to_zone(struct zone *zone, unsigned long start_pfn, unsigned long nr_pages, struct vmem_altmap *altmap); extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages); extern bool is_memblock_offlined(struct memory_block *mem); -extern void remove_memory(int nid, u64 start, u64 size); extern int sparse_add_one_section(struct pglist_data *pgdat, unsigned long start_pfn, struct vmem_altmap *altmap); extern void sparse_remove_one_section(struct zone *zone, struct mem_section *ms, diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index ac9e948b0d370afb081e24a0e5476860bbd5d087..76f6cad4eda2b18cf3841d91e802430f33fa2781 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1903,7 +1903,7 @@ EXPORT_SYMBOL(try_offline_node); * and online/offline operations before this call, as required by * try_offline_node(). */ -void __ref remove_memory(int nid, u64 start, u64 size) +void __ref __remove_memory(int nid, u64 start, u64 size) { int ret; @@ -1932,5 +1932,12 @@ void __ref remove_memory(int nid, u64 start, u64 size) mem_hotplug_done(); } + +void remove_memory(int nid, u64 start, u64 size) +{ + lock_device_hotplug(); + __remove_memory(nid, start, size); + unlock_device_hotplug(); +} EXPORT_SYMBOL_GPL(remove_memory); #endif /* CONFIG_MEMORY_HOTREMOVE */