net: Convert nfs_net_ops

[linux.git] / mm / sparse.c

diff --git a/mm/sparse.c b/mm/sparse.c
index 2609aba121e89cc5c8b656f4ef3539545c434091..7af5e7a92528b4edf622a388faf3e39672144801 100644 (file)
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -264,7 +264,11 @@ unsigned long __init node_memmap_size_bytes(int nid, unsigned long start_pfn,
  */
 static unsigned long sparse_encode_mem_map(struct page *mem_map, unsigned long pnum)
 {
-       return (unsigned long)(mem_map - (section_nr_to_pfn(pnum)));
+       unsigned long coded_mem_map =
+               (unsigned long)(mem_map - (section_nr_to_pfn(pnum)));
+       BUILD_BUG_ON(SECTION_MAP_LAST_BIT > (1UL<<PFN_SECTION_SHIFT));
+       BUG_ON(coded_mem_map & ~SECTION_MAP_MASK);
+       return coded_mem_map;
 }
 
 /*
@@ -417,7 +421,8 @@ static void __init sparse_early_usemaps_alloc_node(void *data,
 }
 
 #ifndef CONFIG_SPARSEMEM_VMEMMAP
-struct page __init *sparse_mem_map_populate(unsigned long pnum, int nid)
+struct page __init *sparse_mem_map_populate(unsigned long pnum, int nid,
+               struct vmem_altmap *altmap)
 {
        struct page *map;
        unsigned long size;
@@ -472,7 +477,7 @@ void __init sparse_mem_maps_populate_node(struct page **map_map,
 
                if (!present_section_nr(pnum))
                        continue;
-               map_map[pnum] = sparse_mem_map_populate(pnum, nodeid);
+               map_map[pnum] = sparse_mem_map_populate(pnum, nodeid, NULL);
                if (map_map[pnum])
                        continue;
                ms = __nr_to_section(pnum);
@@ -500,7 +505,7 @@ static struct page __init *sparse_early_mem_map_alloc(unsigned long pnum)
        struct mem_section *ms = __nr_to_section(pnum);
        int nid = sparse_early_nid(ms);
 
-       map = sparse_mem_map_populate(pnum, nid);
+       map = sparse_mem_map_populate(pnum, nid, NULL);
        if (map)
                return map;
 
@@ -678,17 +683,19 @@ void offline_mem_sections(unsigned long start_pfn, unsigned long end_pfn)
 #endif
 
 #ifdef CONFIG_SPARSEMEM_VMEMMAP
-static inline struct page *kmalloc_section_memmap(unsigned long pnum, int nid)
+static inline struct page *kmalloc_section_memmap(unsigned long pnum, int nid,
+               struct vmem_altmap *altmap)
 {
        /* This will make the necessary allocations eventually. */
-       return sparse_mem_map_populate(pnum, nid);
+       return sparse_mem_map_populate(pnum, nid, altmap);
 }
-static void __kfree_section_memmap(struct page *memmap)
+static void __kfree_section_memmap(struct page *memmap,
+               struct vmem_altmap *altmap)
 {
        unsigned long start = (unsigned long)memmap;
        unsigned long end = (unsigned long)(memmap + PAGES_PER_SECTION);
 
-       vmemmap_free(start, end);
+       vmemmap_free(start, end, altmap);
 }
 #ifdef CONFIG_MEMORY_HOTREMOVE
 static void free_map_bootmem(struct page *memmap)
@@ -696,7 +703,7 @@ static void free_map_bootmem(struct page *memmap)
        unsigned long start = (unsigned long)memmap;
        unsigned long end = (unsigned long)(memmap + PAGES_PER_SECTION);
 
-       vmemmap_free(start, end);
+       vmemmap_free(start, end, NULL);
 }
 #endif /* CONFIG_MEMORY_HOTREMOVE */
 #else
@@ -721,12 +728,14 @@ got_map_ptr:
        return ret;
 }
 
-static inline struct page *kmalloc_section_memmap(unsigned long pnum, int nid)
+static inline struct page *kmalloc_section_memmap(unsigned long pnum, int nid,
+               struct vmem_altmap *altmap)
 {
        return __kmalloc_section_memmap();
 }
 
-static void __kfree_section_memmap(struct page *memmap)
+static void __kfree_section_memmap(struct page *memmap,
+               struct vmem_altmap *altmap)
 {
        if (is_vmalloc_addr(memmap))
                vfree(memmap);
@@ -773,7 +782,8 @@ static void free_map_bootmem(struct page *memmap)
  * set.  If this is <=0, then that means that the passed-in
  * map was not consumed and must be freed.
  */
-int __meminit sparse_add_one_section(struct pglist_data *pgdat, unsigned long start_pfn)
+int __meminit sparse_add_one_section(struct pglist_data *pgdat,
+               unsigned long start_pfn, struct vmem_altmap *altmap)
 {
        unsigned long section_nr = pfn_to_section_nr(start_pfn);
        struct mem_section *ms;
@@ -789,12 +799,12 @@ int __meminit sparse_add_one_section(struct pglist_data *pgdat, unsigned long st
        ret = sparse_index_init(section_nr, pgdat->node_id);
        if (ret < 0 && ret != -EEXIST)
                return ret;
-       memmap = kmalloc_section_memmap(section_nr, pgdat->node_id);
+       memmap = kmalloc_section_memmap(section_nr, pgdat->node_id, altmap);
        if (!memmap)
                return -ENOMEM;
        usemap = __kmalloc_section_usemap();
        if (!usemap) {
-               __kfree_section_memmap(memmap);
+               __kfree_section_memmap(memmap, altmap);
                return -ENOMEM;
        }
 
@@ -816,7 +826,7 @@ out:
        pgdat_resize_unlock(pgdat, &flags);
        if (ret <= 0) {
                kfree(usemap);
-               __kfree_section_memmap(memmap);
+               __kfree_section_memmap(memmap, altmap);
        }
        return ret;
 }
@@ -843,7 +853,8 @@ static inline void clear_hwpoisoned_pages(struct page *memmap, int nr_pages)
 }
 #endif
 
-static void free_section_usemap(struct page *memmap, unsigned long *usemap)
+static void free_section_usemap(struct page *memmap, unsigned long *usemap,
+               struct vmem_altmap *altmap)
 {
        struct page *usemap_page;
 
@@ -857,7 +868,7 @@ static void free_section_usemap(struct page *memmap, unsigned long *usemap)
        if (PageSlab(usemap_page) || PageCompound(usemap_page)) {
                kfree(usemap);
                if (memmap)
-                       __kfree_section_memmap(memmap);
+                       __kfree_section_memmap(memmap, altmap);
                return;
        }
 
@@ -871,7 +882,7 @@ static void free_section_usemap(struct page *memmap, unsigned long *usemap)
 }
 
 void sparse_remove_one_section(struct zone *zone, struct mem_section *ms,
-               unsigned long map_offset)
+               unsigned long map_offset, struct vmem_altmap *altmap)
 {
        struct page *memmap = NULL;
        unsigned long *usemap = NULL, flags;
@@ -889,7 +900,7 @@ void sparse_remove_one_section(struct zone *zone, struct mem_section *ms,
 
        clear_hwpoisoned_pages(memmap + map_offset,
                        PAGES_PER_SECTION - map_offset);
-       free_section_usemap(memmap, usemap);
+       free_section_usemap(memmap, usemap, altmap);
 }
 #endif /* CONFIG_MEMORY_HOTREMOVE */
 #endif /* CONFIG_MEMORY_HOTPLUG */