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| author | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 01:49:53 -0500 |
|---|---|---|
| committer | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 01:50:27 -0500 |
| commit | c28cc36469554dc55540f059fbdc7fa22a2c31fc (patch) | |
| tree | 6b867456be48b8633a2d56a99e00bb3faf9dccc7 /fs/btrfs/print-tree.c | |
| parent | 31e6b01f4183ff419a6d1f86177cbf4662347cec (diff) | |
fs: fs_struct use seqlock
Use a seqlock in the fs_struct to enable us to take an atomic copy of the
complete cwd and root paths. Use this in the RCU lookup path to avoid a
thread-shared spinlock in RCU lookup operations.
Multi-threaded apps may now perform path lookups with scalability matching
multi-process apps. Operations such as stat(2) become very scalable for
multi-threaded workload.
Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Diffstat (limited to 'fs/btrfs/print-tree.c')
0 files changed, 0 insertions, 0 deletions