-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, Whamcloud, Inc.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
struct bio *lo_biotail;
int lo_state;
cfs_semaphore_t lo_sem;
- cfs_semaphore_t lo_ctl_mutex;
+ cfs_mutex_t lo_ctl_mutex;
cfs_atomic_t lo_pending;
cfs_waitq_t lo_bh_wait;
static int max_loop = MAX_LOOP_DEFAULT;
static struct lloop_device *loop_dev;
static struct gendisk **disks;
-static cfs_semaphore_t lloop_mutex;
+static cfs_mutex_t lloop_mutex;
static void *ll_iocontrol_magic = NULL;
static loff_t get_loop_size(struct lloop_device *lo, struct file *file)
ll_stats_ops_tally(ll_i2sbi(inode),
(rw == WRITE) ? LPROC_LL_BRW_WRITE : LPROC_LL_BRW_READ,
- page_count << PAGE_CACHE_SHIFT);
+ page_count);
pvec->ldp_size = page_count << PAGE_CACHE_SHIFT;
pvec->ldp_nr = page_count;
return 0;
}
+#ifdef HAVE_REQUEST_QUEUE_UNPLUG_FN
/*
* kick off io on the underlying address space
*/
clear_bit(QUEUE_FLAG_PLUGGED, &q->queue_flags);
blk_run_address_space(lo->lo_backing_file->f_mapping);
}
+#endif
static inline void loop_handle_bio(struct lloop_device *lo, struct bio *bio)
{
*/
blk_queue_make_request(lo->lo_queue, loop_make_request);
lo->lo_queue->queuedata = lo;
+#ifdef HAVE_REQUEST_QUEUE_UNPLUG_FN
lo->lo_queue->unplug_fn = loop_unplug;
+#endif
/* queue parameters */
- blk_queue_hardsect_size(lo->lo_queue, CFS_PAGE_SIZE);
- blk_queue_max_sectors(lo->lo_queue,
- LLOOP_MAX_SEGMENTS << (CFS_PAGE_SHIFT - 9));
- blk_queue_max_phys_segments(lo->lo_queue, LLOOP_MAX_SEGMENTS);
- blk_queue_max_hw_segments(lo->lo_queue, LLOOP_MAX_SEGMENTS);
+ CLASSERT(CFS_PAGE_SIZE < (1 << (sizeof(unsigned short) * 8)));
+ blk_queue_logical_block_size(lo->lo_queue,
+ (unsigned short)CFS_PAGE_SIZE);
+ blk_queue_max_hw_sectors(lo->lo_queue,
+ LLOOP_MAX_SEGMENTS << (CFS_PAGE_SHIFT - 9));
+ blk_queue_max_segments(lo->lo_queue, LLOOP_MAX_SEGMENTS);
set_capacity(disks[lo->lo_number], size);
bd_set_size(bdev, size << 9);
set_blocksize(bdev, lo->lo_blocksize);
- cfs_kernel_thread(loop_thread, lo, CLONE_KERNEL);
+ cfs_create_thread(loop_thread, lo, CLONE_KERNEL);
cfs_down(&lo->lo_sem);
return 0;
return 0;
}
+#ifdef HAVE_BLKDEV_PUT_2ARGS
+static int lo_open(struct block_device *bdev, fmode_t mode)
+{
+ struct lloop_device *lo = bdev->bd_disk->private_data;
+#else
static int lo_open(struct inode *inode, struct file *file)
{
struct lloop_device *lo = inode->i_bdev->bd_disk->private_data;
+#endif
- cfs_down(&lo->lo_ctl_mutex);
+ cfs_mutex_lock(&lo->lo_ctl_mutex);
lo->lo_refcnt++;
- cfs_up(&lo->lo_ctl_mutex);
+ cfs_mutex_unlock(&lo->lo_ctl_mutex);
return 0;
}
+#ifdef HAVE_BLKDEV_PUT_2ARGS
+static int lo_release(struct gendisk *disk, fmode_t mode)
+{
+ struct lloop_device *lo = disk->private_data;
+#else
static int lo_release(struct inode *inode, struct file *file)
{
struct lloop_device *lo = inode->i_bdev->bd_disk->private_data;
+#endif
- cfs_down(&lo->lo_ctl_mutex);
+ cfs_mutex_lock(&lo->lo_ctl_mutex);
--lo->lo_refcnt;
- cfs_up(&lo->lo_ctl_mutex);
+ cfs_mutex_unlock(&lo->lo_ctl_mutex);
return 0;
}
/* lloop device node's ioctl function. */
+#ifdef HAVE_BLKDEV_PUT_2ARGS
+static int lo_ioctl(struct block_device *bdev, fmode_t mode,
+ unsigned int cmd, unsigned long arg)
+{
+ struct lloop_device *lo = bdev->bd_disk->private_data;
+ struct inode *inode = NULL;
+ int err = 0;
+#else
static int lo_ioctl(struct inode *inode, struct file *unused,
unsigned int cmd, unsigned long arg)
{
struct lloop_device *lo = inode->i_bdev->bd_disk->private_data;
struct block_device *bdev = inode->i_bdev;
int err = 0;
+#endif
- cfs_down(&lloop_mutex);
+ cfs_mutex_lock(&lloop_mutex);
switch (cmd) {
case LL_IOC_LLOOP_DETACH: {
err = loop_clr_fd(lo, bdev, 2);
if (err == 0)
- blkdev_put(bdev); /* grabbed in LLOOP_ATTACH */
+ ll_blkdev_put(bdev, 0); /* grabbed in LLOOP_ATTACH */
break;
}
case LL_IOC_LLOOP_INFO: {
- __u64 ino = 0;
+ struct lu_fid fid;
+ LASSERT(lo->lo_backing_file != NULL);
+ if (inode == NULL)
+ inode = lo->lo_backing_file->f_dentry->d_inode;
if (lo->lo_state == LLOOP_BOUND)
- ino = lo->lo_backing_file->f_dentry->d_inode->i_ino;
+ fid = ll_i2info(inode)->lli_fid;
+ else
+ fid_zero(&fid);
- if (put_user(ino, (__u64 *)arg))
+ if (copy_to_user((struct lu_fid *)arg, &fid, sizeof(fid)))
err = -EFAULT;
break;
}
err = -EINVAL;
break;
}
- cfs_up(&lloop_mutex);
+ cfs_mutex_unlock(&lloop_mutex);
return err;
}
CWARN("Enter llop_ioctl\n");
- cfs_down(&lloop_mutex);
+ cfs_mutex_lock(&lloop_mutex);
switch (cmd) {
case LL_IOC_LLOOP_ATTACH: {
struct lloop_device *lo_free = NULL;
if (put_user((long)old_encode_dev(dev), (long*)arg))
GOTO(out, err = -EFAULT);
- bdev = open_by_devnum(dev, file->f_mode);
+ bdev = blkdev_get_by_dev(dev, file->f_mode, NULL);
if (IS_ERR(bdev))
GOTO(out, err = PTR_ERR(bdev));
err = loop_set_fd(lo, NULL, bdev, file);
if (err) {
fput(file);
- blkdev_put(bdev);
+ ll_blkdev_put(bdev, 0);
}
break;
bdev = lo->lo_device;
err = loop_clr_fd(lo, bdev, 1);
if (err == 0)
- blkdev_put(bdev); /* grabbed in LLOOP_ATTACH */
+ ll_blkdev_put(bdev, 0); /* grabbed in LLOOP_ATTACH */
break;
}
}
out:
- cfs_up(&lloop_mutex);
+ cfs_mutex_unlock(&lloop_mutex);
out1:
if (rcp)
*rcp = err;
goto out_mem3;
}
- cfs_init_mutex(&lloop_mutex);
+ cfs_mutex_init(&lloop_mutex);
for (i = 0; i < max_loop; i++) {
struct lloop_device *lo = &loop_dev[i];
if (!lo->lo_queue)
goto out_mem4;
- cfs_init_mutex(&lo->lo_ctl_mutex);
- cfs_init_mutex_locked(&lo->lo_sem);
+ cfs_mutex_init(&lo->lo_ctl_mutex);
+ cfs_sema_init(&lo->lo_sem, 0);
cfs_waitq_init(&lo->lo_bh_wait);
lo->lo_number = i;
cfs_spin_lock_init(&lo->lo_lock);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff