Hi Josef,
commit 660d3f6cde552323578b85fc5a09a6742f1fe804
Author: Josef Bacik <josef@xxxxxxxxxx>
Date: Fri Dec 9 11:18:51 2011 -0500
Btrfs: fix how we do delalloc reservations and how we free reservations on error
introduced possible deadlock. According to comment before
btrfs_page_mkwrite(), that function is not allowed to take
node->i_mutex .
The problem was detected by Patrick (full lockdep info is provided):
http://bugzilla.kernel.org/attachment.cgi?id=72072
during investigating of some other issue (kernel.org bug 42576)
Stanislaw
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