During truncation, have to notify the VM about the new size
of the NFS file *before* doing the nfs_vinvalbuf operation. Otherwise some invalid data may show up in an mmap.
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=39792
@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* @(#)nfs_vnops.c 8.16 (Berkeley) 5/27/95
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* $Id: nfs_vnops.c,v 1.105 1998/07/04 20:45:37 julian Exp $
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* $Id: nfs_vnops.c,v 1.106 1998/08/13 08:09:08 dfr Exp $
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*/
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@ -622,6 +622,7 @@ nfs_setattr(ap)
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*/
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if (vp->v_mount->mnt_flag & MNT_RDONLY)
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return (EROFS);
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vnode_pager_setsize(vp, (u_long)vap->va_size);
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if (np->n_flag & NMODIFIED) {
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if (vap->va_size == 0)
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error = nfs_vinvalbuf(vp, 0,
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@ -629,12 +630,13 @@ nfs_setattr(ap)
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else
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error = nfs_vinvalbuf(vp, V_SAVE,
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ap->a_cred, ap->a_p, 1);
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if (error)
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if (error) {
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vnode_pager_setsize(vp, (u_long)np->n_size);
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return (error);
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}
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}
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tsize = np->n_size;
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np->n_size = np->n_vattr.va_size = vap->va_size;
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vnode_pager_setsize(vp, (u_long)np->n_size);
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};
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} else if ((vap->va_mtime.tv_sec != VNOVAL ||
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vap->va_atime.tv_sec != VNOVAL) && (np->n_flag & NMODIFIED) &&
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* @(#)nfs_vnops.c 8.16 (Berkeley) 5/27/95
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* $Id: nfs_vnops.c,v 1.105 1998/07/04 20:45:37 julian Exp $
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* $Id: nfs_vnops.c,v 1.106 1998/08/13 08:09:08 dfr Exp $
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*/
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@ -622,6 +622,7 @@ nfs_setattr(ap)
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*/
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if (vp->v_mount->mnt_flag & MNT_RDONLY)
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return (EROFS);
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vnode_pager_setsize(vp, (u_long)vap->va_size);
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if (np->n_flag & NMODIFIED) {
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if (vap->va_size == 0)
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error = nfs_vinvalbuf(vp, 0,
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@ -629,12 +630,13 @@ nfs_setattr(ap)
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else
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error = nfs_vinvalbuf(vp, V_SAVE,
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ap->a_cred, ap->a_p, 1);
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if (error)
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if (error) {
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vnode_pager_setsize(vp, (u_long)np->n_size);
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return (error);
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}
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}
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tsize = np->n_size;
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np->n_size = np->n_vattr.va_size = vap->va_size;
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vnode_pager_setsize(vp, (u_long)np->n_size);
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};
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} else if ((vap->va_mtime.tv_sec != VNOVAL ||
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vap->va_atime.tv_sec != VNOVAL) && (np->n_flag & NMODIFIED) &&
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