From: Erez_Zadok <ezk@cs.sunysb.edu>
Date: Fri, 24 Aug 2007 14:42:56 +0000 (-0400)
Subject: Unionfs: support CONFIG_PREEMPT_RT
X-Git-Url: https://git.fsl.cs.sunysb.edu/?a=commitdiff_plain;h=7b507983b6d88c345ea10be59839f8423aa7f318;p=unionfs-2.6.39.y.git

Unionfs: support CONFIG_PREEMPT_RT

Use compat_rw_semaphore when using the real-time preemption patches.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
---

diff --git a/fs/unionfs/union.h b/fs/unionfs/union.h
index 3b555bc9985..f03143ef145 100644
--- a/fs/unionfs/union.h
+++ b/fs/unionfs/union.h
@@ -143,7 +143,11 @@ struct unionfs_sb_info {
 	 *   2) any new operations do not execute until the currently
 	 *      running branch management operation completes
 	 */
+#ifdef CONFIG_PREEMPT_RT
+	struct compat_rw_semaphore rwsem;
+#else /* not CONFIG_PREEMPT_RT */
 	struct rw_semaphore rwsem;
+#endif /* not CONFIG_PREEMPT_RT */
 	int high_branch_id;	/* last unique branch ID given */
 	struct unionfs_data *data;
 };