Merge branch 'for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

Pull btrfs fixes from Chris Mason:
 "These are all over the place.

  The tracepoint part of the pull fixes a crash and adds a little more
  information to two tracepoints, while the rest are good old fashioned
  fixes"

* 'for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  btrfs: make tracepoint format strings more compact
  Btrfs: add truncated_len for ordered extent tracepoints
  Btrfs: add 'inode' for extent map tracepoint
  btrfs: fix crash when tracepoint arguments are freed by wq callbacks
  Btrfs: adjust outstanding_extents counter properly when dio write is split
  Btrfs: fix lockdep warning about log_mutex
  Btrfs: use down_read_nested to make lockdep silent
  btrfs: fix locking when we put back a delayed ref that's too new
  btrfs: fix error handling when run_delayed_extent_op fails
  btrfs: return the actual error value from  from btrfs_uuid_tree_iterate

1 files changed, 10 insertions, 3 deletions

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index f2b281ad7af6..4e024260ad71 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -7059,7 +7059,7 @@ insert:
 	write_unlock(&em_tree->lock);
 out:
 
-	trace_btrfs_get_extent(root, em);
+	trace_btrfs_get_extent(root, inode, em);
 
 	btrfs_free_path(path);
 	if (trans) {
@@ -7623,11 +7623,18 @@ static void adjust_dio_outstanding_extents(struct inode *inode,
 	 * within our reservation, otherwise we need to adjust our inode
 	 * counter appropriately.
 	 */
-	if (dio_data->outstanding_extents) {
+	if (dio_data->outstanding_extents >= num_extents) {
 		dio_data->outstanding_extents -= num_extents;
 	} else {
+		/*
+		 * If dio write length has been split due to no large enough
+		 * contiguous space, we need to compensate our inode counter
+		 * appropriately.
+		 */
+		u64 num_needed = num_extents - dio_data->outstanding_extents;
+
 		spin_lock(&BTRFS_I(inode)->lock);
-		BTRFS_I(inode)->outstanding_extents += num_extents;
+		BTRFS_I(inode)->outstanding_extents += num_needed;
 		spin_unlock(&BTRFS_I(inode)->lock);
 	}
 }