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-rw-r--r--fs/ubifs/debug.c41
1 files changed, 35 insertions, 6 deletions
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index f7515bd38b4f..b5ba2ea5b626 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -1818,6 +1818,8 @@ static struct fsck_inode *add_inode(struct ubifs_info *c,
struct rb_node **p, *parent = NULL;
struct fsck_inode *fscki;
ino_t inum = key_inum_flash(c, &ino->key);
+ struct inode *inode;
+ struct ubifs_inode *ui;
p = &fsckd->inodes.rb_node;
while (*p) {
@@ -1841,19 +1843,46 @@ static struct fsck_inode *add_inode(struct ubifs_info *c,
if (!fscki)
return ERR_PTR(-ENOMEM);
+ inode = ilookup(c->vfs_sb, inum);
+
fscki->inum = inum;
- fscki->nlink = le32_to_cpu(ino->nlink);
- fscki->size = le64_to_cpu(ino->size);
- fscki->xattr_cnt = le32_to_cpu(ino->xattr_cnt);
- fscki->xattr_sz = le32_to_cpu(ino->xattr_size);
- fscki->xattr_nms = le32_to_cpu(ino->xattr_names);
- fscki->mode = le32_to_cpu(ino->mode);
+ /*
+ * If the inode is present in the VFS inode cache, use it instead of
+ * the on-flash inode which might be out-of-date. E.g., the size might
+ * be out-of-date. If we do not do this, the following may happen, for
+ * example:
+ * 1. A power cut happens
+ * 2. We mount the file-system R/O, the replay process fixes up the
+ * inode size in the VFS cache, but on on-flash.
+ * 3. 'check_leaf()' fails because it hits a data node beyond inode
+ * size.
+ */
+ if (!inode) {
+ fscki->nlink = le32_to_cpu(ino->nlink);
+ fscki->size = le64_to_cpu(ino->size);
+ fscki->xattr_cnt = le32_to_cpu(ino->xattr_cnt);
+ fscki->xattr_sz = le32_to_cpu(ino->xattr_size);
+ fscki->xattr_nms = le32_to_cpu(ino->xattr_names);
+ fscki->mode = le32_to_cpu(ino->mode);
+ } else {
+ ui = ubifs_inode(inode);
+ fscki->nlink = inode->i_nlink;
+ fscki->size = inode->i_size;
+ fscki->xattr_cnt = ui->xattr_cnt;
+ fscki->xattr_sz = ui->xattr_size;
+ fscki->xattr_nms = ui->xattr_names;
+ fscki->mode = inode->i_mode;
+ iput(inode);
+ }
+
if (S_ISDIR(fscki->mode)) {
fscki->calc_sz = UBIFS_INO_NODE_SZ;
fscki->calc_cnt = 2;
}
+
rb_link_node(&fscki->rb, parent, p);
rb_insert_color(&fscki->rb, &fsckd->inodes);
+
return fscki;
}