[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 <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 4 insertions, 3 deletions

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;
 }