Merge branch 'master' into for-linus

1 files changed, 6 insertions, 5 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index fadf69a2764b..dc84daee6bc4 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -267,7 +267,7 @@ static int caching_kthread(void *data)
         last = max_t(u64, block_group->key.objectid, BTRFS_SUPER_INFO_OFFSET);
 again:
         /* need to make sure the commit_root doesn't disappear */
-        down_read(&fs_info->extent_root->commit_root_sem);
+        down_read(&fs_info->extent_commit_sem);
 
         /*
          * We don't want to deadlock with somebody trying to allocate a new
@@ -302,10 +302,11 @@ again:
                         else if (ret)
                                 break;
 
-                        if (need_resched()) {
+                        if (need_resched() ||
+                            btrfs_transaction_in_commit(fs_info)) {
                                 btrfs_release_path(fs_info->extent_root, path);
-                                up_read(&fs_info->extent_root->commit_root_sem);
-                                cond_resched();
+                                up_read(&fs_info->extent_commit_sem);
+                                schedule_timeout(1);
                                 goto again;
                         }
 
@@ -345,7 +346,7 @@ next:
 
 err:
         btrfs_free_path(path);
-        up_read(&fs_info->extent_root->commit_root_sem);
+        up_read(&fs_info->extent_commit_sem);
         atomic_dec(&block_group->space_info->caching_threads);
         wake_up(&block_group->caching_q);