Btrfs: use rcu to protect device->name

[platform/adaptation/renesas_rcar/renesas_kernel.git] / fs / btrfs / check-integrity.c

diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c
index 9cebb1f..da6e936 100644 (file)
--- a/fs/btrfs/check-integrity.c
+++ b/fs/btrfs/check-integrity.c
@@ -93,6 +93,7 @@
 #include "print-tree.h"
 #include "locking.h"
 #include "check-integrity.h"
+#include "rcu-string.h"
 
 #define BTRFSIC_BLOCK_HASHTABLE_SIZE 0x10000
 #define BTRFSIC_BLOCK_LINK_HASHTABLE_SIZE 0x10000
@@ -843,13 +844,14 @@ static int btrfsic_process_superblock_dev_mirror(
                superblock_tmp->never_written = 0;
                superblock_tmp->mirror_num = 1 + superblock_mirror_num;
                if (state->print_mask & BTRFSIC_PRINT_MASK_SUPERBLOCK_WRITE)
-                       printk(KERN_INFO "New initial S-block (bdev %p, %s)"
-                              " @%llu (%s/%llu/%d)\n",
-                              superblock_bdev, device->name,
-                              (unsigned long long)dev_bytenr,
-                              dev_state->name,
-                              (unsigned long long)dev_bytenr,
-                              superblock_mirror_num);
+                       printk_in_rcu(KERN_INFO "New initial S-block (bdev %p, %s)"
+                                    " @%llu (%s/%llu/%d)\n",
+                                    superblock_bdev,
+                                    rcu_str_deref(device->name),
+                                    (unsigned long long)dev_bytenr,
+                                    dev_state->name,
+                                    (unsigned long long)dev_bytenr,
+                                    superblock_mirror_num);
                list_add(&superblock_tmp->all_blocks_node,
                         &state->all_blocks_list);
                btrfsic_block_hashtable_add(superblock_tmp,