tree 266eeb3baf38b968ae2186575ae70ef431cf159f
parent 9e351cc862b098d8ec8f8022d110932490794925
author Josef Bacik <jbacik@fb.com> 1396041361 -0400
committer Chris Mason <clm@fb.com> 1396886919 -0700

Btrfs: hold the commit_root_sem when getting the commit root during send

We currently rely too heavily on roots being read-only to save us from just
accessing root->commit_root.  We can easily balance blocks out from underneath a
read only root, so to save us from getting screwed make sure we only access
root->commit_root under the commit root sem.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>