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Add convenience macro to assert tmpfs node lock.

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Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
This commit is contained in:
Konstantin Belousov 2014-07-14 08:59:25 +00:00
parent 55781cb922
commit d2ca06cdd2
2 changed files with 3 additions and 1 deletions
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2
sys/fs/tmpfs/tmpfs.h
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@ -276,6 +276,8 @@ LIST_HEAD(tmpfs_node_list, tmpfs_node);
#define TMPFS_NODE_LOCK(node) mtx_lock(&(node)->tn_interlock)
#define TMPFS_NODE_UNLOCK(node) mtx_unlock(&(node)->tn_interlock)
#define TMPFS_NODE_MTX(node) (&(node)->tn_interlock)
#define TMPFS_NODE_ASSERT_LOCKED(node) mtx_assert(TMPFS_NODE_MTX(node), \
MA_OWNED)
#ifdef INVARIANTS
#define TMPFS_ASSERT_LOCKED(node) do { \

2
sys/fs/tmpfs/tmpfs_subr.c
View file

@ -633,7 +633,7 @@ tmpfs_free_vp(struct vnode *vp)
node = VP_TO_TMPFS_NODE(vp);
mtx_assert(TMPFS_NODE_MTX(node), MA_OWNED);
TMPFS_NODE_ASSERT_LOCKED(node);
node->tn_vnode = NULL;
if ((node->tn_vpstate & TMPFS_VNODE_WRECLAIM) != 0)
wakeup(&node->tn_vnode);