3 files changed, 6 insertions, 4 deletions

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 3d3accb1f800..5a37e2055717 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -92,7 +92,7 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v)
                    "BdiDirtyThresh:   %8lu kB\n"
                    "DirtyThresh:      %8lu kB\n"
                    "BackgroundThresh: %8lu kB\n"
-                   "WriteBack threads:%8lu\n"
+                   "WritebackThreads: %8lu\n"
                    "b_dirty:          %8lu\n"
                    "b_io:             %8lu\n"
                    "b_more_io:        %8lu\n"
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index a3b14090b1fb..2c5d79236ead 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -566,7 +566,8 @@ static void balance_dirty_pages(struct address_space *mapping,
                 if (pages_written >= write_chunk)
                         break;          /* We've done our duty */
 
-                schedule_timeout_interruptible(pause);
+                __set_current_state(TASK_INTERRUPTIBLE);
+                io_schedule_timeout(pause);
 
                 /*
                  * Increase the delay for each loop, up to our previous
diff --git a/mm/percpu.c b/mm/percpu.c
index 4a048abad043..6af78c1ee704 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1870,13 +1870,14 @@ int __init pcpu_embed_first_chunk(size_t reserved_size, ssize_t dyn_size,
         max_distance = 0;
         for (group = 0; group < ai->nr_groups; group++) {
                 ai->groups[group].base_offset = areas[group] - base;
-                max_distance = max(max_distance, ai->groups[group].base_offset);
+                max_distance = max_t(size_t, max_distance,
+                                     ai->groups[group].base_offset);
         }
         max_distance += ai->unit_size;
 
         /* warn if maximum distance is further than 75% of vmalloc space */
         if (max_distance > (VMALLOC_END - VMALLOC_START) * 3 / 4) {
-                pr_warning("PERCPU: max_distance=0x%lx too large for vmalloc "
+                pr_warning("PERCPU: max_distance=0x%zx too large for vmalloc "
                            "space 0x%lx\n",
                            max_distance, VMALLOC_END - VMALLOC_START);
 #ifdef CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK