| commit | 240f62c8756df285da11469259b3900f32883168 | [log] [tgz] |
|---|---|---|
| author | Chris Mason <chris.mason@oracle.com> | Wed Mar 23 14:54:42 2011 -0400 |
| committer | root <Chris Mason chris.mason@oracle.com> | Mon Mar 28 05:37:22 2011 -0400 |
| tree | eb973ef95389a9511c137c7c26248dfd04a2495f | |
| parent | c0da7aa1a2d8fcafe271a7077599253c8ed94bb2 [diff] |
Btrfs: use RCU instead of a spinlock to protect the root node The pointer to the extent buffer for the root of each tree is protected by a spinlock so that we can safely read the pointer and take a reference on the extent buffer. But now that the extent buffers are freed via RCU, we can safely use rcu_read_lock instead. Signed-off-by: Chris Mason <chris.mason@oracle.com>