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Btrfs: don't commit the transaction if we dont have enough pinned bytes

I noticed when running an enospc test that we would get stuck committing the
transaction in check_data_space even though we truly didn't have enough space.
So check to see if bytes_pinned is bigger than num_bytes, if it's not don't
commit the transaction.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
Josef Bacik 14 years ago
parent
commit
f2bb8f5cfb
1 changed files with 7 additions and 0 deletions
  1. 7 0
      fs/btrfs/extent-tree.c

+ 7 - 0
fs/btrfs/extent-tree.c

@@ -3089,6 +3089,13 @@ alloc:
 			}
 			goto again;
 		}
+
+		/*
+		 * If we have less pinned bytes than we want to allocate then
+		 * don't bother committing the transaction, it won't help us.
+		 */
+		if (data_sinfo->bytes_pinned < bytes)
+			committed = 1;
 		spin_unlock(&data_sinfo->lock);
 
 		/* commit the current transaction and try again */