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-rw-r--r--mm/sparse.c19
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
251static unsigned long *__init sparse_early_usemap_alloc(unsigned long pnum) 251static 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}