diff options
Diffstat (limited to 'mm/mempolicy.c')
| -rw-r--r-- | mm/mempolicy.c | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 20d5ad39fa4..30bdafba52d 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -429,6 +429,19 @@ static int contextualize_policy(int mode, nodemask_t *nodes) return mpol_check_policy(mode, nodes); } +static int swap_pages(struct list_head *pagelist) +{ + LIST_HEAD(moved); + LIST_HEAD(failed); + int n; + + n = migrate_pages(pagelist, NULL, &moved, &failed); + putback_lru_pages(&failed); + putback_lru_pages(&moved); + + return n; +} + long do_mbind(unsigned long start, unsigned long len, unsigned long mode, nodemask_t *nmask, unsigned long flags) { @@ -481,10 +494,13 @@ long do_mbind(unsigned long start, unsigned long len, (flags & (MPOL_MF_MOVE | MPOL_MF_MOVE_ALL)) ? &pagelist : NULL); err = PTR_ERR(vma); if (!IS_ERR(vma)) { + int nr_failed = 0; + err = mbind_range(vma, start, end, new); if (!list_empty(&pagelist)) - migrate_pages(&pagelist, NULL); - if (!err && !list_empty(&pagelist) && (flags & MPOL_MF_STRICT)) + nr_failed = swap_pages(&pagelist); + + if (!err && nr_failed && (flags & MPOL_MF_STRICT)) err = -EIO; } if (!list_empty(&pagelist)) @@ -635,11 +651,12 @@ int do_migrate_pages(struct mm_struct *mm, down_read(&mm->mmap_sem); check_range(mm, mm->mmap->vm_start, TASK_SIZE, &nodes, flags | MPOL_MF_DISCONTIG_OK, &pagelist); + if (!list_empty(&pagelist)) { - migrate_pages(&pagelist, NULL); - if (!list_empty(&pagelist)) - count = putback_lru_pages(&pagelist); + count = swap_pages(&pagelist); + putback_lru_pages(&pagelist); } + up_read(&mm->mmap_sem); return count; } |