UBI: add some more comments
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c
index b2b0f29..2ff3492 100644
--- a/drivers/mtd/ubi/eba.c
+++ b/drivers/mtd/ubi/eba.c
@@ -797,7 +797,7 @@
/*
* ubi_eba_atomic_leb_change - change logical eraseblock atomically.
* @ubi: UBI device description object
- * @vol: volume escription object
+ * @vol: volume description object
* @lnum: logical eraseblock number
* @buf: data to write
* @len: how many bytes to write
@@ -955,6 +955,12 @@
/*
* We may race with volume deletion/re-size, so we have to hold
* @ubi->volumes_lock.
+ *
+ * Note, it is not a problem if we race with volume deletion or re-size
+ * here. If the volume is deleted or re-sized while we are moving an
+ * eraseblock which belongs to this volume, we'll end up with finding
+ * out that this LEB was unmapped at the end (see WL), and drop this
+ * PEB.
*/
spin_lock(&ubi->volumes_lock);
vol = ubi->volumes[idx];