diff options
| -rw-r--r-- | sys/kern/vfs_vnops.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/sys/kern/vfs_vnops.c b/sys/kern/vfs_vnops.c index 5687bac..77568c2 100644 --- a/sys/kern/vfs_vnops.c +++ b/sys/kern/vfs_vnops.c @@ -356,11 +356,16 @@ vn_rdwr(rw, vp, base, len, offset, segflg, ioflg, cred, aresid, td) if ((ioflg & IO_NODELOCKED) == 0) { mp = NULL; - if (rw == UIO_WRITE && - vp->v_type != VCHR && - (error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0) - return (error); - vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); + if (rw == UIO_WRITE) { + if (vp->v_type != VCHR && + (error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) + != 0) + return (error); + vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); + } else { + vn_lock(vp, LK_SHARED | LK_RETRY, td); + } + } auio.uio_iov = &aiov; auio.uio_iovcnt = 1; @@ -382,7 +387,8 @@ vn_rdwr(rw, vp, base, len, offset, segflg, ioflg, cred, aresid, td) if (auio.uio_resid && error == 0) error = EIO; if ((ioflg & IO_NODELOCKED) == 0) { - vn_finished_write(mp); + if (rw == UIO_WRITE) + vn_finished_write(mp); VOP_UNLOCK(vp, 0, td); } return (error); |
