diff options
Diffstat (limited to 'mm/sparse.c')
-rw-r--r-- | mm/sparse.c | 19 |
1 files changed, 4 insertions, 15 deletions
diff --git a/mm/sparse.c b/mm/sparse.c index dff71f173ae9..36511c7b5e2c 100644 --- a/mm/sparse.c +++ b/mm/sparse.c | |||
@@ -250,29 +250,18 @@ static unsigned long *__kmalloc_section_usemap(void) | |||
250 | 250 | ||
251 | static unsigned long *__init sparse_early_usemap_alloc(unsigned long pnum) | 251 | static unsigned long *__init sparse_early_usemap_alloc(unsigned long pnum) |
252 | { | 252 | { |
253 | unsigned long *usemap, section_nr; | 253 | unsigned long *usemap; |
254 | struct mem_section *ms = __nr_to_section(pnum); | 254 | struct mem_section *ms = __nr_to_section(pnum); |
255 | int nid = sparse_early_nid(ms); | 255 | int nid = sparse_early_nid(ms); |
256 | struct pglist_data *pgdat = NODE_DATA(nid); | ||
257 | 256 | ||
258 | /* | 257 | usemap = alloc_bootmem_node(NODE_DATA(nid), usemap_size()); |
259 | * Usemap's page can't be freed until freeing other sections | ||
260 | * which use it. And, Pgdat has same feature. | ||
261 | * If section A has pgdat and section B has usemap for other | ||
262 | * sections (includes section A), both sections can't be removed, | ||
263 | * because there is the dependency each other. | ||
264 | * To solve above issue, this collects all usemap on the same section | ||
265 | * which has pgdat. | ||
266 | */ | ||
267 | section_nr = pfn_to_section_nr(__pa(pgdat) >> PAGE_SHIFT); | ||
268 | usemap = alloc_bootmem_section(usemap_size(), section_nr); | ||
269 | if (usemap) | 258 | if (usemap) |
270 | return usemap; | 259 | return usemap; |
271 | 260 | ||
272 | /* Stupid: suppress gcc warning for SPARSEMEM && !NUMA */ | 261 | /* Stupid: suppress gcc warning for SPARSEMEM && !NUMA */ |
273 | nid = 0; | 262 | nid = 0; |
274 | 263 | ||
275 | printk(KERN_WARNING "%s: allocation failed\n", __FUNCTION__); | 264 | printk(KERN_WARNING "%s: allocation failed\n", __func__); |
276 | return NULL; | 265 | return NULL; |
277 | } | 266 | } |
278 | 267 | ||
@@ -302,7 +291,7 @@ struct page __init *sparse_early_mem_map_alloc(unsigned long pnum) | |||
302 | return map; | 291 | return map; |
303 | 292 | ||
304 | printk(KERN_ERR "%s: sparsemem memory map backing failed " | 293 | printk(KERN_ERR "%s: sparsemem memory map backing failed " |
305 | "some memory will not be available.\n", __FUNCTION__); | 294 | "some memory will not be available.\n", __func__); |
306 | ms->section_mem_map = 0; | 295 | ms->section_mem_map = 0; |
307 | return NULL; | 296 | return NULL; |
308 | } | 297 | } |