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Add some mutex locking on the nfsnode to the regular NFS client.

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Reviewed by:	jhb
This commit is contained in:
Rick Macklem 2010-08-04 01:19:11 +00:00
parent 28a54cacee
commit ffea18bdfa
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=210834
2 changed files with 10 additions and 5 deletions
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4
sys/nfsclient/nfs_node.c
View File

@ -193,12 +193,14 @@ nfs_inactive(struct vop_inactive_args *ap)
np = VTONFS(ap->a_vp);
if (prtactive && vrefcnt(ap->a_vp) != 0)
vprint("nfs_inactive: pushing active", ap->a_vp);
mtx_lock(&np->n_mtx);
if (ap->a_vp->v_type != VDIR) {
sp = np->n_sillyrename;
np->n_sillyrename = NULL;
} else
sp = NULL;
if (sp) {
mtx_unlock(&np->n_mtx);
(void)nfs_vinvalbuf(ap->a_vp, 0, td, 1);
/*
* Remove the silly file that was rename'd earlier
@ -207,8 +209,10 @@ nfs_inactive(struct vop_inactive_args *ap)
crfree(sp->s_cred);
vrele(sp->s_dvp);
free((caddr_t)sp, M_NFSREQ);
mtx_lock(&np->n_mtx);
}
np->n_flag &= NMODIFIED;
mtx_unlock(&np->n_mtx);
return (0);
}

11
sys/nfsclient/nfs_vnops.c
View File

@ -521,7 +521,7 @@ nfs_open(struct vop_open_args *ap)
*/
mtx_lock(&np->n_mtx);
if (np->n_flag & NMODIFIED) {
mtx_unlock(&np->n_mtx);
mtx_unlock(&np->n_mtx);
error = nfs_vinvalbuf(vp, V_SAVE, ap->a_td, 1);
if (error == EINTR || error == EIO)
return (error);
@ -536,9 +536,8 @@ nfs_open(struct vop_open_args *ap)
return (error);
mtx_lock(&np->n_mtx);
np->n_mtime = vattr.va_mtime;
mtx_unlock(&np->n_mtx);
} else {
mtx_unlock(&np->n_mtx);
mtx_unlock(&np->n_mtx);
error = VOP_GETATTR(vp, &vattr, ap->a_cred);
if (error)
return (error);
@ -554,22 +553,22 @@ nfs_open(struct vop_open_args *ap)
mtx_lock(&np->n_mtx);
np->n_mtime = vattr.va_mtime;
}
mtx_unlock(&np->n_mtx);
}
/*
* If the object has >= 1 O_DIRECT active opens, we disable caching.
*/
if (nfs_directio_enable && (fmode & O_DIRECT) && (vp->v_type == VREG)) {
if (np->n_directio_opens == 0) {
mtx_unlock(&np->n_mtx);
error = nfs_vinvalbuf(vp, V_SAVE, ap->a_td, 1);
if (error)
return (error);
mtx_lock(&np->n_mtx);
np->n_flag |= NNONCACHE;
mtx_unlock(&np->n_mtx);
}
np->n_directio_opens++;
}
mtx_unlock(&np->n_mtx);
vnode_create_vobject(vp, vattr.va_size, ap->a_td);
return (0);
}
@ -1745,7 +1744,9 @@ nfs_remove(struct vop_remove_args *ap)
error = 0;
} else if (!np->n_sillyrename)
error = nfs_sillyrename(dvp, vp, cnp);
mtx_lock(&np->n_mtx);
np->n_attrstamp = 0;
mtx_unlock(&np->n_mtx);
KDTRACE_NFS_ATTRCACHE_FLUSH_DONE(vp);
return (error);
}