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| author | Chris Mason <chris.mason@oracle.com> | 2011-03-23 14:54:42 -0400 |
|---|---|---|
| committer | root <Chris Mason chris.mason@oracle.com> | 2011-03-28 05:37:22 -0400 |
| commit | 240f62c8756df285da11469259b3900f32883168 (patch) | |
| tree | eb973ef95389a9511c137c7c26248dfd04a2495f /fs/btrfs/volumes.h | |
| 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>
Diffstat (limited to 'fs/btrfs/volumes.h')
0 files changed, 0 insertions, 0 deletions