Hi, Here is another patch for 2.6.31. This will improve read performance of nilfs. I'll send this to linux-next and backport it to the nilfs2-module standalone package.
Thanks, Ryusuke Konishi -- From: Ryusuke Konishi <[email protected]> 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 <[email protected]> --- 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, -- 1.6.2 _______________________________________________ users mailing list [email protected] https://www.nilfs.org/mailman/listinfo/users
