| vfs_default.c (276192) | vfs_default.c (276200) |
|---|---|
| 1/*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed 6 * to Berkeley by John Heidemann of the UCLA Ficus project. 7 * 8 * Source: * @(#)i405_init.c 2.10 92/04/27 UCLA Ficus project --- 19 unchanged lines hidden (view full) --- 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed 6 * to Berkeley by John Heidemann of the UCLA Ficus project. 7 * 8 * Source: * @(#)i405_init.c 2.10 92/04/27 UCLA Ficus project --- 19 unchanged lines hidden (view full) --- 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include <sys/cdefs.h> |
| 36__FBSDID("$FreeBSD: head/sys/kern/vfs_default.c 276192 2014-12-24 22:58:08Z rmacklem $"); | 36__FBSDID("$FreeBSD: head/sys/kern/vfs_default.c 276200 2014-12-25 14:44:04Z rmacklem $"); |
| 37 38#include <sys/param.h> 39#include <sys/systm.h> 40#include <sys/bio.h> 41#include <sys/buf.h> 42#include <sys/conf.h> 43#include <sys/event.h> 44#include <sys/kernel.h> --- 357 unchanged lines hidden (view full) --- 402{ 403 struct vnode *vp; 404 struct vattr vattr; 405 int error; 406 407 vp = ap->a_vp; 408 if (ap->a_fl->l_whence == SEEK_END) { 409 /* | 37 38#include <sys/param.h> 39#include <sys/systm.h> 40#include <sys/bio.h> 41#include <sys/buf.h> 42#include <sys/conf.h> 43#include <sys/event.h> 44#include <sys/kernel.h> --- 357 unchanged lines hidden (view full) --- 402{ 403 struct vnode *vp; 404 struct vattr vattr; 405 int error; 406 407 vp = ap->a_vp; 408 if (ap->a_fl->l_whence == SEEK_END) { 409 /* |
| 410 * The NFSv4 server will LOR/deadlock if a vn_lock() call 411 * is done on vp. Fortunately, vattr.va_size is only 412 * needed for SEEK_END and the NFSv4 server only uses SEEK_SET. | 410 * The NFSv4 server must avoid doing a vn_lock() here, since it 411 * can deadlock the nfsd threads, due to a LOR. Fortunately 412 * the NFSv4 server always uses SEEK_SET and this code is 413 * only required for the SEEK_END case. |
| 413 */ 414 vn_lock(vp, LK_SHARED | LK_RETRY); 415 error = VOP_GETATTR(vp, &vattr, curthread->td_ucred); 416 VOP_UNLOCK(vp, 0); 417 if (error) 418 return (error); 419 } else 420 vattr.va_size = 0; --- 867 unchanged lines hidden --- | 414 */ 415 vn_lock(vp, LK_SHARED | LK_RETRY); 416 error = VOP_GETATTR(vp, &vattr, curthread->td_ucred); 417 VOP_UNLOCK(vp, 0); 418 if (error) 419 return (error); 420 } else 421 vattr.va_size = 0; --- 867 unchanged lines hidden --- |