UBIFS: improve debugging lprops scanning a little
When doing the lprops extra check ('dbg_check_lprops()') we scan whole media.
We even scan empty and freeable LEBs which may contain garbage, which we handle
after scanning. This patch teach the lprops checking function
('scan_check_cb()') to avoid scanning for free and freeable LEBs and save time.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
diff --git a/fs/ubifs/lprops.c b/fs/ubifs/lprops.c
index 0ee0847..ce9fe39 100644
--- a/fs/ubifs/lprops.c
+++ b/fs/ubifs/lprops.c
@@ -1100,32 +1100,26 @@
goto out;
}
+ /*
+ * After an unclean unmount, empty and freeable LEBs
+ * may contain garbage - do not scan them.
+ */
+ if (lp->free == c->leb_size) {
+ lst->empty_lebs += 1;
+ lst->total_free += c->leb_size;
+ lst->total_dark += ubifs_calc_dark(c, c->leb_size);
+ return LPT_SCAN_CONTINUE;
+ }
+ if (lp->free + lp->dirty == c->leb_size &&
+ !(lp->flags & LPROPS_INDEX)) {
+ lst->total_free += lp->free;
+ lst->total_dirty += lp->dirty;
+ lst->total_dark += ubifs_calc_dark(c, c->leb_size);
+ return LPT_SCAN_CONTINUE;
+ }
+
sleb = ubifs_scan(c, lnum, 0, buf, 0);
if (IS_ERR(sleb)) {
- /*
- * After an unclean unmount, empty and freeable LEBs
- * may contain garbage.
- */
- if (lp->free == c->leb_size) {
- ubifs_err("scan errors were in empty LEB "
- "- continuing checking");
- lst->empty_lebs += 1;
- lst->total_free += c->leb_size;
- lst->total_dark += ubifs_calc_dark(c, c->leb_size);
- ret = LPT_SCAN_CONTINUE;
- goto exit;
- }
-
- if (lp->free + lp->dirty == c->leb_size &&
- !(lp->flags & LPROPS_INDEX)) {
- ubifs_err("scan errors were in freeable LEB "
- "- continuing checking");
- lst->total_free += lp->free;
- lst->total_dirty += lp->dirty;
- lst->total_dark += ubifs_calc_dark(c, c->leb_size);
- ret = LPT_SCAN_CONTINUE;
- goto exit;
- }
data->err = PTR_ERR(sleb);
ret = LPT_SCAN_STOP;
goto exit;