For the pagecache, races can happen if writeback doesn't take
``i_rwsem`` or ``invalidate_lock`` and updates mapping information.
- Races can also happen if the filesytem allows concurrent writes.
+ Races can also happen if the filesystem allows concurrent writes.
For such files, the mapping *must* be revalidated after the folio
lock has been taken so that iomap can manage the folio correctly.
to "y". Where the upper filesystem contains an opaque directory, any
directory in the lower filesystem with the same name is ignored.
-An opaque directory should not conntain any whiteouts, because they do not
+An opaque directory should not contain any whiteouts, because they do not
serve any purpose. A merge directory containing regular files with the xattr
"trusted.overlay.whiteout", should be additionally marked by setting the xattr
"trusted.overlay.opaque" to "x" on the merge directory itself.