Apply preempt_rt patch-4.9-rt1.patch.xz

[zynq/linux.git] / lib / scatterlist.c

diff --git a/lib/scatterlist.c b/lib/scatterlist.c
index 004fc70fc56a3d06947f9e89c60e40e272ce551c..ccc46992a51794b407b54944fbc7f39c3e019ea8 100644 (file)
--- a/lib/scatterlist.c
+++ b/lib/scatterlist.c
@@ -620,7 +620,7 @@ void sg_miter_stop(struct sg_mapping_iter *miter)
                        flush_kernel_dcache_page(miter->page);
 
                if (miter->__flags & SG_MITER_ATOMIC) {
-                       WARN_ON_ONCE(preemptible());
+                       WARN_ON_ONCE(!pagefault_disabled());
                        kunmap_atomic(miter->addr);
                } else
                        kunmap(miter->page);
@@ -664,7 +664,7 @@ size_t sg_copy_buffer(struct scatterlist *sgl, unsigned int nents, void *buf,
        if (!sg_miter_skip(&miter, skip))
                return false;
 
-       local_irq_save(flags);
+       local_irq_save_nort(flags);
 
        while (sg_miter_next(&miter) && offset < buflen) {
                unsigned int len;
@@ -681,7 +681,7 @@ size_t sg_copy_buffer(struct scatterlist *sgl, unsigned int nents, void *buf,
 
        sg_miter_stop(&miter);
 
-       local_irq_restore(flags);
+       local_irq_restore_nort(flags);
        return offset;
 }
 EXPORT_SYMBOL(sg_copy_buffer);