fscache: use FindFirstFileExW to avoid retrieving the short name

Use FindFirstFileExW with FindExInfoBasic to avoid forcing NTFS to look up the short name. Also switch to a larger (64K vs 4K) buffer using FIND_FIRST_EX_LARGE_FETCH to minimize round trips to the kernel. In a repo with ~200K files, this drops warm cache status times from 3.19 seconds to 2.67 seconds for a 16% savings. Signed-off-by: Ben Peart <[email protected]>
git-for-windows · Nov 21, 2018 · 807bced · 807bced
1 parent e323264
commit 807bced
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/compat/win32/fscache.c b/compat/win32/fscache.c
@@ -206,7 +206,8 @@ static struct fsentry *fsentry_create_list(const struct fsentry *dir,
 	pattern[wlen] = 0;
 
 	/* open find handle */
-	h = FindFirstFileW(pattern, &fdata);
+	h = FindFirstFileExW(pattern, FindExInfoBasic, &fdata, FindExSearchNameMatch,
+		NULL, FIND_FIRST_EX_LARGE_FETCH);
 	if (h == INVALID_HANDLE_VALUE) {
 		err = GetLastError();
 		*dir_not_found = 1; /* or empty directory */