afs: add missing up_write() on return
If afs_cell_alloc() fails, afs_cells_sem doesn't get unlocked, which
leads to a deadlock. Unlock it before returning.
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/afs/cell.c b/fs/afs/cell.c
index 788865d..584bb0f 100644
--- a/fs/afs/cell.c
+++ b/fs/afs/cell.c
@@ -138,6 +138,7 @@
cell = afs_cell_alloc(name, vllist);
if (IS_ERR(cell)) {
_leave(" = %ld", PTR_ERR(cell));
+ up_write(&afs_cells_sem);
return cell;
}