diff options
| author | Ingo Molnar <mingo@kernel.org> | 2012-07-18 11:17:17 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-07-18 11:17:17 +0200 |
| commit | a2fe194723f6e4990d01d8c208c7b138fd410522 (patch) | |
| tree | 7aee93fa8f4ba1e18b56fa7d8eab75d249fc6966 /mm/sparse.c | |
| parent | c3b7cdf180090d2686239a75bb0ae408108ed749 (diff) | |
| parent | a018540141a931f5299a866907b27886916b4374 (diff) | |
Merge branch 'linus' into perf/core
Pick up the latest ring-buffer fixes, before applying a new fix.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'mm/sparse.c')
| -rw-r--r-- | mm/sparse.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/mm/sparse.c b/mm/sparse.c index 6a4bf9160e85..c7bb952400c8 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -275,8 +275,9 @@ static unsigned long * __init sparse_early_usemaps_alloc_pgdat_section(struct pglist_data *pgdat, unsigned long size) { - pg_data_t *host_pgdat; - unsigned long goal; + unsigned long goal, limit; + unsigned long *p; + int nid; /* * A page may contain usemaps for other sections preventing the * page being freed and making a section unremovable while @@ -287,10 +288,17 @@ sparse_early_usemaps_alloc_pgdat_section(struct pglist_data *pgdat, * from the same section as the pgdat where possible to avoid * this problem. */ - goal = __pa(pgdat) & PAGE_SECTION_MASK; - host_pgdat = NODE_DATA(early_pfn_to_nid(goal >> PAGE_SHIFT)); - return __alloc_bootmem_node_nopanic(host_pgdat, size, - SMP_CACHE_BYTES, goal); + goal = __pa(pgdat) & (PAGE_SECTION_MASK << PAGE_SHIFT); + limit = goal + (1UL << PA_SECTION_SHIFT); + nid = early_pfn_to_nid(goal >> PAGE_SHIFT); +again: + p = ___alloc_bootmem_node_nopanic(NODE_DATA(nid), size, + SMP_CACHE_BYTES, goal, limit); + if (!p && limit) { + limit = 0; + goto again; + } + return p; } static void __init check_usemap_section_nr(int nid, unsigned long *usemap) |