diff options
| -rw-r--r-- | mm/bootmem.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/mm/bootmem.c b/mm/bootmem.c index 2ccea700968..3c012fb5874 100644 --- a/mm/bootmem.c +++ b/mm/bootmem.c @@ -238,28 +238,32 @@ __alloc_bootmem_core(struct bootmem_data *bdata, unsigned long size, * We try to allocate bootmem pages above 'goal' * first, then we try to allocate lower pages. */ - if (goal && goal >= bdata->node_boot_start && PFN_DOWN(goal) < end_pfn) { - preferred = goal - bdata->node_boot_start; + preferred = 0; + if (goal && PFN_DOWN(goal) < end_pfn) { + if (goal > bdata->node_boot_start) + preferred = goal - bdata->node_boot_start; if (bdata->last_success >= preferred) if (!limit || (limit && limit > bdata->last_success)) preferred = bdata->last_success; - } else - preferred = 0; + } preferred = PFN_DOWN(ALIGN(preferred, align)) + offset; areasize = (size + PAGE_SIZE-1) / PAGE_SIZE; incr = align >> PAGE_SHIFT ? : 1; restart_scan: - for (i = preferred; i < eidx; i += incr) { + for (i = preferred; i < eidx;) { unsigned long j; + i = find_next_zero_bit(bdata->node_bootmem_map, eidx, i); i = ALIGN(i, incr); if (i >= eidx) break; - if (test_bit(i, bdata->node_bootmem_map)) + if (test_bit(i, bdata->node_bootmem_map)) { + i += incr; continue; + } for (j = i + 1; j < i + areasize; ++j) { if (j >= eidx) goto fail_block; @@ -270,6 +274,8 @@ restart_scan: goto found; fail_block: i = ALIGN(j, incr); + if (i == j) + i += incr; } if (preferred > offset) { |