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| author | Chris Mason <chris.mason@oracle.com> | 2008-06-25 22:14:04 +0200 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 17:04:04 +0200 |
| commit | f9efa9c784aa3b801feb367f72c6867d26fb348e (patch) | |
| tree | d9f678310c6c8a4daf2003fa4f6b4164111dbbd7 /fs/btrfs/root-tree.c | |
| parent | Btrfs: Online btree defragmentation fixes (diff) | |
| download | linux-f9efa9c784aa3b801feb367f72c6867d26fb348e.tar.xz linux-f9efa9c784aa3b801feb367f72c6867d26fb348e.zip | |
Btrfs: Reduce contention on the root node
This calls unlock_up sooner in btrfs_search_slot in order to decrease the
amount of work done with the higher level tree locks held.
Also, it changes btrfs_tree_lock to spin for a big against the page lock
before scheduling. This makes a big difference in context switch rate under
highly contended workloads.
Longer term, a better locking structure is needed than the page lock.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/root-tree.c')
0 files changed, 0 insertions, 0 deletions