| ctl_backend_block.c (287868) | ctl_backend_block.c (287875) |
|---|---|
| 1/*- 2 * Copyright (c) 2003 Silicon Graphics International Corp. 3 * Copyright (c) 2009-2011 Spectra Logic Corporation 4 * Copyright (c) 2012 The FreeBSD Foundation 5 * All rights reserved. 6 * 7 * Portions of this software were developed by Edward Tomasz Napierala 8 * under sponsorship from the FreeBSD Foundation. --- 26 unchanged lines hidden (view full) --- 35 * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl_backend_block.c#5 $ 36 */ 37/* 38 * CAM Target Layer driver backend for block devices. 39 * 40 * Author: Ken Merry <ken@FreeBSD.org> 41 */ 42#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2003 Silicon Graphics International Corp. 3 * Copyright (c) 2009-2011 Spectra Logic Corporation 4 * Copyright (c) 2012 The FreeBSD Foundation 5 * All rights reserved. 6 * 7 * Portions of this software were developed by Edward Tomasz Napierala 8 * under sponsorship from the FreeBSD Foundation. --- 26 unchanged lines hidden (view full) --- 35 * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl_backend_block.c#5 $ 36 */ 37/* 38 * CAM Target Layer driver backend for block devices. 39 * 40 * Author: Ken Merry <ken@FreeBSD.org> 41 */ 42#include <sys/cdefs.h> |
| 43__FBSDID("$FreeBSD: head/sys/cam/ctl/ctl_backend_block.c 287868 2015-09-16 18:33:04Z mav $"); | 43__FBSDID("$FreeBSD: head/sys/cam/ctl/ctl_backend_block.c 287875 2015-09-16 21:43:51Z mav $"); |
| 44 45#include <sys/param.h> 46#include <sys/systm.h> 47#include <sys/kernel.h> 48#include <sys/types.h> 49#include <sys/kthread.h> 50#include <sys/bio.h> 51#include <sys/fcntl.h> --- 575 unchanged lines hidden (view full) --- 627static void 628ctl_be_block_dispatch_file(struct ctl_be_block_lun *be_lun, 629 struct ctl_be_block_io *beio) 630{ 631 struct ctl_be_block_filedata *file_data; 632 union ctl_io *io; 633 struct uio xuio; 634 struct iovec *xiovec; | 44 45#include <sys/param.h> 46#include <sys/systm.h> 47#include <sys/kernel.h> 48#include <sys/types.h> 49#include <sys/kthread.h> 50#include <sys/bio.h> 51#include <sys/fcntl.h> --- 575 unchanged lines hidden (view full) --- 627static void 628ctl_be_block_dispatch_file(struct ctl_be_block_lun *be_lun, 629 struct ctl_be_block_io *beio) 630{ 631 struct ctl_be_block_filedata *file_data; 632 union ctl_io *io; 633 struct uio xuio; 634 struct iovec *xiovec; |
| 635 int flags; 636 int error, i; | 635 size_t s; 636 int error, flags, i; |
| 637 638 DPRINTF("entered\n"); 639 640 file_data = &be_lun->backend.file; 641 io = beio->io; 642 flags = 0; 643 if (ARGS(io)->flags & CTL_LLF_DPO) 644 flags |= IO_DIRECT; --- 44 unchanged lines hidden (view full) --- 689 * ZFS pays attention to IO_SYNC (which translates into the 690 * Solaris define FRSYNC for zfs_read()) for reads. It 691 * attempts to sync the file before reading. 692 */ 693 error = VOP_READ(be_lun->vn, &xuio, flags, file_data->cred); 694 695 VOP_UNLOCK(be_lun->vn, 0); 696 SDT_PROBE(cbb, kernel, read, file_done, 0, 0, 0, 0, 0); | 637 638 DPRINTF("entered\n"); 639 640 file_data = &be_lun->backend.file; 641 io = beio->io; 642 flags = 0; 643 if (ARGS(io)->flags & CTL_LLF_DPO) 644 flags |= IO_DIRECT; --- 44 unchanged lines hidden (view full) --- 689 * ZFS pays attention to IO_SYNC (which translates into the 690 * Solaris define FRSYNC for zfs_read()) for reads. It 691 * attempts to sync the file before reading. 692 */ 693 error = VOP_READ(be_lun->vn, &xuio, flags, file_data->cred); 694 695 VOP_UNLOCK(be_lun->vn, 0); 696 SDT_PROBE(cbb, kernel, read, file_done, 0, 0, 0, 0, 0); |
| 697 if (error == 0 && xuio.uio_resid > 0) { 698 /* 699 * If we red less then requested (EOF), then 700 * we should clean the rest of the buffer. 701 */ 702 s = beio->io_len - xuio.uio_resid; 703 for (i = 0; i < beio->num_segs; i++) { 704 if (s >= beio->sg_segs[i].len) { 705 s -= beio->sg_segs[i].len; 706 continue; 707 } 708 bzero((uint8_t *)beio->sg_segs[i].addr + s, 709 beio->sg_segs[i].len - s); 710 s = 0; 711 } 712 } |
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| 697 } else { 698 struct mount *mountpoint; 699 int lock_flags; 700 701 (void)vn_start_write(be_lun->vn, &mountpoint, V_WAIT); 702 703 if (MNT_SHARED_WRITES(mountpoint) 704 || ((mountpoint == NULL) --- 2268 unchanged lines hidden --- | 713 } else { 714 struct mount *mountpoint; 715 int lock_flags; 716 717 (void)vn_start_write(be_lun->vn, &mountpoint, V_WAIT); 718 719 if (MNT_SHARED_WRITES(mountpoint) 720 || ((mountpoint == NULL) --- 2268 unchanged lines hidden --- |