1 files changed, 26 insertions, 13 deletions

diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index d91b0de7c502..4edfdc2acc5f 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -137,11 +137,20 @@ static int start_log_trans(struct btrfs_trans_handle *trans,
 
         mutex_lock(&root->log_mutex);
         if (root->log_root) {
+                if (!root->log_start_pid) {
+                        root->log_start_pid = current->pid;
+                        root->log_multiple_pids = false;
+                } else if (root->log_start_pid != current->pid) {
+                        root->log_multiple_pids = true;
+                }
+
                 root->log_batch++;
                 atomic_inc(&root->log_writers);
                 mutex_unlock(&root->log_mutex);
                 return 0;
         }
+        root->log_multiple_pids = false;
+        root->log_start_pid = current->pid;
         mutex_lock(&root->fs_info->tree_log_mutex);
         if (!root->fs_info->log_root_tree) {
                 ret = btrfs_init_log_root_tree(trans, root->fs_info);
@@ -263,8 +272,8 @@ static int process_one_buffer(struct btrfs_root *log,
                               struct walk_control *wc, u64 gen)
 {
         if (wc->pin)
-                btrfs_update_pinned_extents(log->fs_info->extent_root,
-                                            eb->start, eb->len, 1);
+                btrfs_pin_extent(log->fs_info->extent_root,
+                                 eb->start, eb->len, 0);
 
         if (btrfs_buffer_uptodate(eb, gen)) {
                 if (wc->write)
@@ -534,7 +543,7 @@ static noinline int replay_one_extent(struct btrfs_trans_handle *trans,
         saved_nbytes = inode_get_bytes(inode);
         /* drop any overlapping extents */
         ret = btrfs_drop_extents(trans, root, inode,
-                         start, extent_end, extent_end, start, &alloc_hint);
+                         start, extent_end, extent_end, start, &alloc_hint, 1);
         BUG_ON(ret);
 
         if (found_type == BTRFS_FILE_EXTENT_REG ||
@@ -1985,7 +1994,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
         if (atomic_read(&root->log_commit[(index1 + 1) % 2]))
                 wait_log_commit(trans, root, root->log_transid - 1);
 
-        while (1) {
+        while (root->log_multiple_pids) {
                 unsigned long batch = root->log_batch;
                 mutex_unlock(&root->log_mutex);
                 schedule_timeout_uninterruptible(1);
@@ -2011,6 +2020,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
         root->log_batch = 0;
         root->log_transid++;
         log->log_transid = root->log_transid;
+        root->log_start_pid = 0;
         smp_mb();
         /*
          * log tree has been flushed to disk, new modifications of
@@ -2605,7 +2615,7 @@ static noinline int copy_items(struct btrfs_trans_handle *trans,
                                                                 extent);
                                 cs = btrfs_file_extent_offset(src, extent);
                                 cl = btrfs_file_extent_num_bytes(src,
-                                                                extent);;
+                                                                extent);
                                 if (btrfs_file_extent_compression(src,
                                                                   extent)) {
                                         cs = 0;
@@ -2841,7 +2851,7 @@ static noinline int check_parent_dirs_for_sync(struct btrfs_trans_handle *trans,
                 if (!parent || !parent->d_inode || sb != parent->d_inode->i_sb)
                         break;
 
-                if (parent == sb->s_root)
+                if (IS_ROOT(parent))
                         break;
 
                 parent = parent->d_parent;
@@ -2880,6 +2890,12 @@ int btrfs_log_inode_parent(struct btrfs_trans_handle *trans,
                 goto end_no_trans;
         }
 
+        if (root != BTRFS_I(inode)->root ||
+            btrfs_root_refs(&root->root_item) == 0) {
+                ret = 1;
+                goto end_no_trans;
+        }
+
         ret = check_parent_dirs_for_sync(trans, inode, parent,
                                          sb, last_committed);
         if (ret)
@@ -2907,12 +2923,15 @@ int btrfs_log_inode_parent(struct btrfs_trans_handle *trans,
                         break;
 
                 inode = parent->d_inode;
+                if (root != BTRFS_I(inode)->root)
+                        break;
+
                 if (BTRFS_I(inode)->generation >
                     root->fs_info->last_trans_committed) {
                         ret = btrfs_log_inode(trans, root, inode, inode_only);
                         BUG_ON(ret);
                 }
-                if (parent == sb->s_root)
+                if (IS_ROOT(parent))
                         break;
 
                 parent = parent->d_parent;
@@ -2951,7 +2970,6 @@ int btrfs_recover_log_trees(struct btrfs_root *log_root_tree)
         struct btrfs_key tmp_key;
         struct btrfs_root *log;
         struct btrfs_fs_info *fs_info = log_root_tree->fs_info;
-        u64 highest_inode;
         struct walk_control wc = {
                 .process_func = process_one_buffer,
                 .stage = 0,
@@ -3010,11 +3028,6 @@ again:
                                                       path);
                         BUG_ON(ret);
                 }
-                ret = btrfs_find_highest_inode(wc.replay_dest, &highest_inode);
-                if (ret == 0) {
-                        wc.replay_dest->highest_inode = highest_inode;
-                        wc.replay_dest->last_inode_alloc = highest_inode;
-                }
 
                 key.offset = found_key.offset - 1;
                 wc.replay_dest->log_root = NULL;