[JFFS2] Improve failure mode if inode checking leaves unchecked space.
We should never find the unchecked size is non-zero after we've finished
checking all inodes. If it happens, used to BUG(), leaving the alloc_sem
held and deadlocking. Instead, just return -ENOSPC after complaining. The
GC thread will die, but read-only operation should be able to continue and
the file system should be unmountable.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/fs/jffs2/gc.c b/fs/jffs2/gc.c
index 3a3cf22..e92cf0f 100644
--- a/fs/jffs2/gc.c
+++ b/fs/jffs2/gc.c
@@ -144,7 +144,8 @@
c->unchecked_size);
jffs2_dbg_dump_block_lists_nolock(c);
spin_unlock(&c->erase_completion_lock);
- BUG();
+ up(&c->alloc_sem);
+ return -ENOSPC;
}
spin_unlock(&c->erase_completion_lock);