From: Darrick J. Wong <darrick.wong@oracle.com>
Date: Wed, 6 Nov 2019 16:41:20 +0000 (-0800)
Subject: xfs: annotate functions that trip static checker locking checks
X-Git-Tag: v5.5-rc1~71^2~90
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f755979355d46ef088f9c9fdb5d11c4a425e738e;p=thirdparty%2Fkernel%2Flinux.git

xfs: annotate functions that trip static checker locking checks

Add some lock annotations to helper functions that seem to have
unbalanced locking that confuses the static analyzers.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---

diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index d7d3bfd6a9200..3806674090ed4 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -2808,6 +2808,8 @@ xlog_state_do_iclog_callbacks(
 	struct xlog		*log,
 	struct xlog_in_core	*iclog,
 	bool			aborted)
+		__releases(&log->l_icloglock)
+		__acquires(&log->l_icloglock)
 {
 	spin_unlock(&log->l_icloglock);
 	spin_lock(&iclog->ic_callback_lock);
diff --git a/fs/xfs/xfs_log_priv.h b/fs/xfs/xfs_log_priv.h
index 4f19375f65920..c47aa2ca6dc72 100644
--- a/fs/xfs/xfs_log_priv.h
+++ b/fs/xfs/xfs_log_priv.h
@@ -537,7 +537,11 @@ xlog_cil_force(struct xlog *log)
  * by a spinlock. This matches the semantics of all the wait queues used in the
  * log code.
  */
-static inline void xlog_wait(wait_queue_head_t *wq, spinlock_t *lock)
+static inline void
+xlog_wait(
+	struct wait_queue_head	*wq,
+	struct spinlock		*lock)
+		__releases(lock)
 {
 	DECLARE_WAITQUEUE(wait, current);