Minor speedup

--HG--
branch : HEAD

diff --git a/src/lib/file-dotlock.c b/src/lib/file-dotlock.c
index cfd9e931af08ef977b8c4af86770e4a9e2a64fe6..ad64c4520d4f1e382f601710e38a7d238bd0f396 100644 (file)
--- a/src/lib/file-dotlock.c
+++ b/src/lib/file-dotlock.c
@@ -116,22 +116,23 @@ static int check_lock(time_t now, struct lock_info *lock_info)
                return 1;
        }
 
-       /* see if the file we're locking is being modified */
-       if (stat(lock_info->path, &st) < 0) {
-               if (errno == ENOENT) {
-                       /* file doesn't exist. treat it as if
-                          it hasn't changed */
-               } else {
-                       i_error("stat(%s) failed: %m", lock_info->path);
-                       return -1;
+       if (lock_info->last_change != now) {
+               if (stat(lock_info->path, &st) < 0) {
+                       if (errno == ENOENT) {
+                               /* file doesn't exist. treat it as if
+                                  it hasn't changed */
+                       } else {
+                               i_error("stat(%s) failed: %m", lock_info->path);
+                               return -1;
+                       }
+               } else if (lock_info->last_size != st.st_size ||
+                          lock_info->last_ctime != st.st_ctime ||
+                          lock_info->last_mtime != st.st_mtime) {
+                       lock_info->last_change = now;
+                       lock_info->last_size = st.st_size;
+                       lock_info->last_ctime = st.st_ctime;
+                       lock_info->last_mtime = st.st_mtime;
                }
-       } else if (lock_info->last_size != st.st_size ||
-                   lock_info->last_ctime != st.st_ctime ||
-                  lock_info->last_mtime != st.st_mtime) {
-               lock_info->last_change = now;
-               lock_info->last_size = st.st_size;
-               lock_info->last_ctime = st.st_ctime;
-               lock_info->last_mtime = st.st_mtime;
        }
 
        if (now > lock_info->last_change + (time_t)lock_info->stale_timeout) {