Merge pull request #1344 from jeffhostetler/perf_add_excludes_with_fscache

dir.c: make add_excludes aware of fscache during status

Author: dscho

compat/win32/fscache.c

@@ -9,6 +9,11 @@ static struct hashmap map;
 static CRITICAL_SECTION mutex;
 static struct trace_key trace_fscache = TRACE_KEY_INIT(FSCACHE);
 
+int fscache_is_enabled(void)
+{
+	return enabled;
+}
+
 /*
  * An entry in the file system cache. Used for both entire directory listings
  * and file entries.

compat/win32/fscache.h

@@ -4,6 +4,9 @@
 int fscache_enable(int enable);
 #define enable_fscache(x) fscache_enable(x)
 
+int fscache_is_enabled(void);
+#define is_fscache_enabled() (fscache_is_enabled())
+
 DIR *fscache_opendir(const char *dir);
 int fscache_lstat(const char *file_name, struct stat *buf);
 

dir.c

@@ -805,8 +805,9 @@ static int add_excludes(const char *fname, const char *base, int baselen,
 	size_t size = 0;
 	char *buf;
 
-	fd = open(fname, O_RDONLY);
-	if (fd < 0 || fstat(fd, &st) < 0) {
+	if (is_fscache_enabled() && lstat(fname, &st) < 0)
+		return -1;
+	if ((fd = open(fname, O_RDONLY)) < 0 || fstat(fd, &st) < 0) {
 		if (fd < 0)
 			warn_on_fopen_errors(fname);
 		else

git-compat-util.h

@@ -1255,6 +1255,10 @@ static inline int is_missing_file_error(int errno_)
 #define enable_fscache(x) /* noop */
 #endif
 
+#ifndef is_fscache_enabled
+#define is_fscache_enabled() (0)
+#endif
+
 extern int cmd_main(int, const char **);
 
 /*