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authorJosef Bacik <josef@redhat.com>2010-02-02 21:48:28 +0000
committerChris Mason <chris.mason@oracle.com>2010-03-15 11:00:12 -0400
commit49958fd7dbb83cd4d65179d025940e01fe1fbacd (patch)
tree4a29e47c0935375968971450a2f2949bbd3cdd43 /fs/ext4
parent4125bf761cd0786e1163e024c7c809ce2cc625bc (diff)
downloadop-kernel-dev-49958fd7dbb83cd4d65179d025940e01fe1fbacd.zip
op-kernel-dev-49958fd7dbb83cd4d65179d025940e01fe1fbacd.tar.gz
Btrfs: change the ordered tree to use a spinlock instead of a mutex
The ordered tree used to need a mutex, but currently all we use it for is to protect the rb_tree, and a spin_lock is just fine for that. Using a spin_lock instead makes dbench run a little faster, 58 mb/s instead of 51 mb/s, and have less latency, 3445.138 ms instead of 3820.633 ms. Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
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