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msdosfs_reclaim(): add missing fstrans and protect change 

of v_data with v_interlock as msdosfs_sync() now needs it.
This commit is contained in:
hannken 2014-05-30 08:42:35 +00:00
parent 7bd94e9e7c
commit de57916f59
1 changed files with 11 additions and 3 deletions
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14
sys/fs/msdosfs/msdosfs_denode.c
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@ -1,4 +1,4 @@
/* $NetBSD: msdosfs_denode.c,v 1.48 2012/12/20 08:03:42 hannken Exp $ */
/* $NetBSD: msdosfs_denode.c,v 1.49 2014/05/30 08:42:35 hannken Exp $ */
/*-
* Copyright (C) 1994, 1995, 1997 Wolfgang Solfrank.
@ -48,7 +48,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: msdosfs_denode.c,v 1.48 2012/12/20 08:03:42 hannken Exp $");
__KERNEL_RCSID(0, "$NetBSD: msdosfs_denode.c,v 1.49 2014/05/30 08:42:35 hannken Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -671,8 +671,10 @@ msdosfs_reclaim(void *v)
struct vnode *a_vp;
} */ *ap = v;
struct vnode *vp = ap->a_vp;
struct mount *mp = vp->v_mount;
struct denode *dep = VTODE(vp);
fstrans_start(mp, FSTRANS_LAZY);
#ifdef MSDOSFS_DEBUG
printf("msdosfs_reclaim(): dep %p, file %s, refcnt %ld\n",
dep, dep->de_Name, dep->de_refcnt);
@ -694,9 +696,15 @@ msdosfs_reclaim(void *v)
#if 0 /* XXX */
dep->de_flag = 0;
#endif
/*
* To interlock with msdosfs_sync().
*/
genfs_node_destroy(vp);
pool_put(&msdosfs_denode_pool, dep);
mutex_enter(vp->v_interlock);
vp->v_data = NULL;
mutex_exit(vp->v_interlock);
pool_put(&msdosfs_denode_pool, dep);
fstrans_done(mp);
return (0);
}