From: Josef Bacik <josef@redhat.com>
Date: Mon, 19 Sep 2011 16:26:24 +0000 (-0400)
Subject: Btrfs: delay iput when deleting a block group
X-Git-Tag: v3.2-rc1~21^2~24^2~26
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=455757c322cc0a0f2a692c5625dd88aaf6a7b889;p=platform%2Fupstream%2Fkernel-adaptation-pc.git

Btrfs: delay iput when deleting a block group

I kept getting warnings from evict because we were calling
btrfs_start_transaction() with a transaction already started when doing a
balance.  This is because we remove a block group which requires a transaction,
and the put the last reference on the cache inode.  Instead of doing this we
need to delay the iput so it is done not within a transaction having started.
This gets rid of our warnings.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
---

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 9bb7159..5498bda 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -7266,7 +7266,7 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
 			spin_unlock(&block_group->lock);
 		}
 		/* One for our lookup ref */
-		iput(inode);
+		btrfs_add_delayed_iput(inode);
 	}
 
 	key.objectid = BTRFS_FREE_SPACE_OBJECTID;