diff options
Diffstat (limited to 'drivers/infiniband/core/umem.c')
| -rw-r--r-- | drivers/infiniband/core/umem.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c index c5b686394760..8137031c2a65 100644 --- a/drivers/infiniband/core/umem.c +++ b/drivers/infiniband/core/umem.c @@ -45,6 +45,8 @@ #include "uverbs.h" +#define RESCHED_LOOP_CNT_THRESHOLD 0x1000 + static void __ib_umem_release(struct ib_device *dev, struct ib_umem *umem, int dirty) { bool make_dirty = umem->writable && dirty; @@ -55,10 +57,14 @@ static void __ib_umem_release(struct ib_device *dev, struct ib_umem *umem, int d ib_dma_unmap_sgtable_attrs(dev, &umem->sgt_append.sgt, DMA_BIDIRECTIONAL, 0); - for_each_sgtable_sg(&umem->sgt_append.sgt, sg, i) + for_each_sgtable_sg(&umem->sgt_append.sgt, sg, i) { unpin_user_page_range_dirty_lock(sg_page(sg), DIV_ROUND_UP(sg->length, PAGE_SIZE), make_dirty); + if (i && !(i % RESCHED_LOOP_CNT_THRESHOLD)) + cond_resched(); + } + sg_free_append_table(&umem->sgt_append); } |