x86/mm: Drop usage of __flush_tlb_all() in kernel_physical_mapping_init()

[mirror_ubuntu-bionic-kernel.git] / mm / kmemleak.c

diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index d73c14294f3a61c2385741b447aa31d203a2bc72..235ef08ac37a3d47dd8082e6d43840a2d77fbfbb 100644 (file)
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -127,7 +127,7 @@
 /* GFP bitmask for kmemleak internal allocations */
 #define gfp_kmemleak_mask(gfp) (((gfp) & (GFP_KERNEL | GFP_ATOMIC)) | \
                                 __GFP_NORETRY | __GFP_NOMEMALLOC | \
-                                __GFP_NOWARN)
+                                __GFP_NOWARN | __GFP_NOFAIL)
 
 /* scanning area inside a memory block */
 struct kmemleak_scan_area {
@@ -1658,8 +1658,7 @@ static void start_scan_thread(void)
 }
 
 /*
- * Stop the automatic memory scanning thread. This function must be called
- * with the scan_mutex held.
+ * Stop the automatic memory scanning thread.
  */
 static void stop_scan_thread(void)
 {
@@ -1922,12 +1921,15 @@ static void kmemleak_do_cleanup(struct work_struct *work)
 {
        stop_scan_thread();
 
+       mutex_lock(&scan_mutex);
        /*
-        * Once the scan thread has stopped, it is safe to no longer track
-        * object freeing. Ordering of the scan thread stopping and the memory
-        * accesses below is guaranteed by the kthread_stop() function.
+        * Once it is made sure that kmemleak_scan has stopped, it is safe to no
+        * longer track object freeing. Ordering of the scan thread stopping and
+        * the memory accesses below is guaranteed by the kthread_stop()
+        * function.
         */
        kmemleak_free_enabled = 0;
+       mutex_unlock(&scan_mutex);
 
        if (!kmemleak_found_leaks)
                __kmemleak_do_cleanup();