erofs: expand another clear_and_wake_up_bit

Change-Id: 3ff1e2b095ac54ab49dc33e98837d3b5427ed006 Signed-off-by: TogoFire <togofire@mailfence.com>
TogoFire · Feb 23, 2023 · 1a57a29 · 1a57a29
1 parent 1c0cbd1
commit 1a57a29
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/fs/erofs/zmap.c b/fs/erofs/zmap.c
@@ -100,7 +100,10 @@ static int z_erofs_fill_inode_lazy(struct inode *inode)
 	unlock_page(page);
 	put_page(page);
 out_unlock:
-	clear_and_wake_up_bit(EROFS_I_BL_Z_BIT, &vi->flags);
+	clear_bit_unlock(EROFS_I_BL_Z_BIT, &vi->flags);
+	/* See wake_up_bit() for which memory barrier you need to use. */
+	smp_mb__after_atomic();
+	wake_up_bit(&vi->flags, EROFS_I_BL_Z_BIT);
 	return err;
 }