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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 /fs | |
| parent | 30bda0b8ae470997dc681d6fd82108bac5caebf8 (diff) | |
| download | kernel_samsung_aries-e85dc1d5295779d2e6d973b7ed524d6bd3825a3f.zip kernel_samsung_aries-e85dc1d5295779d2e6d973b7ed524d6bd3825a3f.tar.gz kernel_samsung_aries-e85dc1d5295779d2e6d973b7ed524d6bd3825a3f.tar.bz2 | |
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 'fs')
| -rw-r--r-- | fs/nilfs2/inode.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c index 3f70eed..f25fd4b 100644 --- a/fs/nilfs2/inode.c +++ b/fs/nilfs2/inode.c @@ -240,7 +240,7 @@ nilfs_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov, struct address_space_operations nilfs_aops = { .writepage = nilfs_writepage, .readpage = nilfs_readpage, - /* .sync_page = nilfs_sync_page, */ + .sync_page = block_sync_page, .writepages = nilfs_writepages, .set_page_dirty = nilfs_set_page_dirty, .readpages = nilfs_readpages, |