From dd187a2603d9904ddc410441348f0cfc558a5233 Mon Sep 17 00:00:00 2001 From: Evgeniy Dushistov Date: Sun, 25 Jun 2006 05:47:25 -0700 Subject: [PATCH] ufs: little directory lookup optimization This patch make little optimization of ufs_find_entry like "ext2" does. Save number of page and reuse it again in the next call. Signed-off-by: Evgeniy Dushistov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ufs/dir.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'fs/ufs/dir.c') diff --git a/fs/ufs/dir.c b/fs/ufs/dir.c index 732c3fd2b6f2..7f0a0aa63584 100644 --- a/fs/ufs/dir.c +++ b/fs/ufs/dir.c @@ -252,6 +252,7 @@ struct ufs_dir_entry *ufs_find_entry(struct inode *dir, struct dentry *dentry, unsigned long start, n; unsigned long npages = ufs_dir_pages(dir); struct page *page = NULL; + struct ufs_inode_info *ui = UFS_I(dir); struct ufs_dir_entry *de; UFSD("ENTER, dir_ino %lu, name %s, namlen %u\n", dir->i_ino, name, namelen); @@ -262,8 +263,8 @@ struct ufs_dir_entry *ufs_find_entry(struct inode *dir, struct dentry *dentry, /* OFFSET_CACHE */ *res_page = NULL; - /* start = ei->i_dir_start_lookup; */ - start = 0; + start = ui->i_dir_start_lookup; + if (start >= npages) start = 0; n = start; @@ -295,7 +296,7 @@ out: found: *res_page = page; - /* ei->i_dir_start_lookup = n; */ + ui->i_dir_start_lookup = n; return de; } -- cgit v1.2.3