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| author | Evgeniy Dushistov <dushistov@mail.ru> | 2006-06-25 05:47:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-25 10:01:03 -0700 |
| commit | dd187a2603d9904ddc410441348f0cfc558a5233 (patch) | |
| tree | a3859f88d1f458a18d31a231f03c955393282255 /fs/ufs/dir.c | |
| parent | abf5d15fd2e52517dd56a17a846d5a1f900b7db4 (diff) | |
| download | lwn-dd187a2603d9904ddc410441348f0cfc558a5233.tar.gz lwn-dd187a2603d9904ddc410441348f0cfc558a5233.zip | |
[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>
Diffstat (limited to 'fs/ufs/dir.c')
| -rw-r--r-- | fs/ufs/dir.c | 7 |
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; } |