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The tvp vnode on rename is usually unlinked. Drop the cached null

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vnode for tvp to allow the free of the lower vnode, if needed.

PR:	kern/180236
Tested by:	smh
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2013-07-04 19:01:18 +00:00
parent 3e01326432
commit 18a8d3d7f8
1 changed files with 6 additions and 1 deletions
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7
sys/fs/nullfs/null_vnops.c
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@ -554,6 +554,7 @@ null_rename(struct vop_rename_args *ap)
struct vnode *fvp = ap->a_fvp;
struct vnode *fdvp = ap->a_fdvp;
struct vnode *tvp = ap->a_tvp;
struct null_node *tnn;
/* Check for cross-device rename. */
if ((fvp->v_mount != tdvp->v_mount) ||
@ -568,7 +569,11 @@ null_rename(struct vop_rename_args *ap)
vrele(fvp);
return (EXDEV);
}
if (tvp != NULL) {
tnn = VTONULL(tvp);
tnn->null_flags |= NULLV_DROP;
}
return (null_bypass((struct vop_generic_args *)ap));
}