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Btrfs: add transaction space reservation tracepoints

Message ID 1452709280-8098-1-git-send-email-jbacik@fb.com (mailing list archive)
State Accepted
Headers show

Commit Message

Josef Bacik Jan. 13, 2016, 6:21 p.m. UTC 
There are a few places where we add to trans->bytes_reserved but don't have the
corresponding trace point.  With these added my tool no longer sees transaction
leaks.

Signed-off-by: Josef Bacik <jbacik@fb.com>
---
 fs/btrfs/transaction.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
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Patch

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index f85ccf6..a4fec0c 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -637,6 +637,8 @@  struct btrfs_trans_handle *btrfs_start_transaction_fallback_global_rsv(
 
 	trans->block_rsv = &root->fs_info->trans_block_rsv;
 	trans->bytes_reserved = num_bytes;
+	trace_btrfs_space_reservation(root->fs_info, "transaction",
+				      trans->transid, num_bytes, 1);
 
 	return trans;
 }
@@ -1376,7 +1378,9 @@  static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
 	rsv = trans->block_rsv;
 	trans->block_rsv = &pending->block_rsv;
 	trans->bytes_reserved = trans->block_rsv->reserved;
-
+	trace_btrfs_space_reservation(root->fs_info, "transaction",
+				      trans->transid,
+				      trans->bytes_reserved, 1);
 	dentry = pending->dentry;
 	parent_inode = pending->dir;
 	parent_root = BTRFS_I(parent_inode)->root;