Messages in this thread Patch in this message | | | Date | Tue, 11 Apr 2006 19:33:47 -0700 | From | Mike Kravetz <> | Subject | [PATCH] sparsemem interaction with memory add bug fixes |
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This patch fixes two bugs with the way sparsemem interacts with memory add. They are: - memory leak if memmap for section already exists - calling alloc_bootmem_node() after boot These bugs were discovered and a first cut at the fixes were provided by Arnd Bergmann <arnd@arndb.de> and Joel Schopp <jschopp@us.ibm.com>.
Signed-off-by: Mike Kravetz <kravetz@us.ibm.com>
diff -Naupr linux-2.6.17-rc1-mm2/mm/sparse.c linux-2.6.17-rc1-mm2.work/mm/sparse.c --- linux-2.6.17-rc1-mm2/mm/sparse.c 2006-04-03 03:22:10.000000000 +0000 +++ linux-2.6.17-rc1-mm2.work/mm/sparse.c 2006-04-11 23:32:10.000000000 +0000 @@ -32,7 +32,10 @@ static struct mem_section *sparse_index_ unsigned long array_size = SECTIONS_PER_ROOT * sizeof(struct mem_section); - section = alloc_bootmem_node(NODE_DATA(nid), array_size); + if (system_state == SYSTEM_RUNNING) + section = kmalloc_node(array_size, GFP_KERNEL, nid); + else + section = alloc_bootmem_node(NODE_DATA(nid), array_size); if (section) memset(section, 0, array_size); @@ -281,9 +284,9 @@ int sparse_add_one_section(struct zone * ret = sparse_init_one_section(ms, section_nr, memmap); +out: if (ret <= 0) __kfree_section_memmap(memmap, nr_pages); -out: pgdat_resize_unlock(pgdat, &flags); return ret; } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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