From: Duy Nguyen <pclouds@gmail.com>
Date: Sun, 10 Feb 2013 11:22:05 GMT
Subject: Re: inotify to minimize stat() calls
Message-ID: <20130210112205.GA28434@lanh>
In-Reply-To: <20130210111732.GA24377@lanh>

On Sun, Feb 10, 2013 at 06:17:32PM +0700, Duy Nguyen wrote:
> The following patch eliminates untracked search code. As we can see,
> open+getdents also disappears with this patch:
> 
> 0.462909 40950 lstat   0.462909 40950 lstat
> 0.003417 129 brk       0.003417 129 brk
> 0.000762 53 read       0.000762 53 read
> 0.000720 36 open       0.000720 36 open
> 0.000544 12 munmap     0.000454 33 close

.. and the patch is missing:

-- 8< --
diff --git a/dir.c b/dir.c
index 57394e4..1963c6f 100644
--- a/dir.c
+++ b/dir.c
@@ -1439,8 +1439,10 @@ int read_directory(struct dir_struct *dir, const char *path, int len, const char
 		return dir->nr;
 
 	simplify = create_simplify(pathspec);
+#if 0
 	if (!len || treat_leading_path(dir, path, len, simplify))
 		read_directory_recursive(dir, path, len, 0, simplify);
+#endif
 	free_simplify(simplify);
 	qsort(dir->entries, dir->nr, sizeof(struct dir_entry *), cmp_name);
 	qsort(dir->ignored, dir->ignored_nr, sizeof(struct dir_entry *), cmp_name);
-- 8< --