UBIFS: remove useless @ecc in struct ubifs_scan_leb

We set @ecc in ubifs_scan_leb only if leb_read returns EBADMSG and
do not use it any more. This patch removes this variable and adds
comments about EBADMSG handling.

Artem: re-phrase commentaries

Signed-off-by: hujianyang <hujianyang@huawei.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>

2 files changed, 4 insertions, 5 deletions

diff --git a/fs/ubifs/scan.c b/fs/ubifs/scan.c
index 58aa05df2bb6..e5b7c591841b 100644
--- a/fs/ubifs/scan.c
+++ b/fs/ubifs/scan.c
@@ -157,9 +157,10 @@ struct ubifs_scan_leb *ubifs_start_scan(const struct ubifs_info *c, int lnum,
                 return ERR_PTR(err);
         }
 
-        if (err == -EBADMSG)
-                sleb->ecc = 1;
-
+        /*
+         * Note, we ignore integrity errors (EBASMSG) because all the nodes are
+         * protected by CRC checksums.
+         */
         return sleb;
 }
 
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index c1f71fe17cc0..977a01bf1720 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -314,7 +314,6 @@ struct ubifs_scan_node {
  * @nodes_cnt: number of nodes scanned
  * @nodes: list of struct ubifs_scan_node
  * @endpt: end point (and therefore the start of empty space)
- * @ecc: read returned -EBADMSG
  * @buf: buffer containing entire LEB scanned
  */
 struct ubifs_scan_leb {
@@ -322,7 +321,6 @@ struct ubifs_scan_leb {
         int nodes_cnt;
         struct list_head nodes;
         int endpt;
-        int ecc;
         void *buf;
 };