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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-05-27 07:27:12 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-06-10 23:41:11 +0900
commite85dc1d5295779d2e6d973b7ed524d6bd3825a3f (patch)
tree8f13c049839deb9f6cde4deb440b2a3758f10f64 /fs/nilfs2
parent30bda0b8ae470997dc681d6fd82108bac5caebf8 (diff)
downloadlinux-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/nilfs2')
-rw-r--r--fs/nilfs2/inode.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index 3f70eedc0de8..f25fd4b895bc 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,