diff options
| author | Konstantin Belousov <kib@FreeBSD.org> | 2021-08-18 11:14:42 +0000 |
|---|---|---|
| committer | Konstantin Belousov <kib@FreeBSD.org> | 2021-08-27 15:39:45 +0000 |
| commit | f19063ab029b067e1763780aebca4bd620453110 (patch) | |
| tree | be315dcc41be7d4c15a537c8f005802410ab8649 | |
| parent | 7c1e4aab7934933f0669c2b922976b30ed628a3f (diff) | |
vfs_hash_rehash(): require the vnode to be exclusively locked
Rehash updates v_hash. Also, rehash moves the vnode to different hash
bucket, which should be noticed in vfs_hash_get() after sleeping for
the vnode lock.
Reviewed by: mckusick, rmacklem
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D31464
| -rw-r--r-- | sys/kern/vfs_hash.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/kern/vfs_hash.c b/sys/kern/vfs_hash.c index c5d67c8b2b33..2e446e69a314 100644 --- a/sys/kern/vfs_hash.c +++ b/sys/kern/vfs_hash.c @@ -196,6 +196,7 @@ vfs_hash_insert(struct vnode *vp, u_int hash, int flags, struct thread *td, void vfs_hash_rehash(struct vnode *vp, u_int hash) { + ASSERT_VOP_ELOCKED(vp, "rehash requires excl lock"); rw_wlock(&vfs_hash_lock); LIST_REMOVE(vp, v_hashlist); |