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| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-05-27 07:27:12 +0900 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-06-10 23:41:11 +0900 |
| commit | e85dc1d5295779d2e6d973b7ed524d6bd3825a3f (patch) | |
| tree | 8f13c049839deb9f6cde4deb440b2a3758f10f64 /security/commoncap.c | |
| parent | 30bda0b8ae470997dc681d6fd82108bac5caebf8 (diff) | |
| download | op-kernel-dev-e85dc1d5295779d2e6d973b7ed524d6bd3825a3f.zip op-kernel-dev-e85dc1d5295779d2e6d973b7ed524d6bd3825a3f.tar.gz | |
nilfs2: enable sync_page method
This adds a missing sync_page method which unplugs bio requests when
waiting for page locks. This will improve read performance of nilfs.
Here is a measurement result using dd command.
Without this patch:
# mount -t nilfs2 /dev/sde1 /test
# dd if=/test/aaa of=/dev/null bs=512k
1024+0 records in
1024+0 records out
536870912 bytes (537 MB) copied, 6.00688 seconds, 89.4 MB/s
With this patch:
# mount -t nilfs2 /dev/sde1 /test
# dd if=/test/aaa of=/dev/null bs=512k
1024+0 records in
1024+0 records out
536870912 bytes (537 MB) copied, 3.54998 seconds, 151 MB/s
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'security/commoncap.c')
0 files changed, 0 insertions, 0 deletions
