#include <linux/init.h>
#include <linux/wait.h>
#include <linux/slab.h>
-#include <linux/devfs_fs_kernel.h>
#include <linux/dm-ioctl.h>
#include <linux/hdreg.h>
{
init_buckets(_name_buckets);
init_buckets(_uuid_buckets);
- devfs_mk_dir(DM_DIR);
return 0;
}
static void dm_hash_exit(void)
{
dm_hash_remove_all(0);
- devfs_remove(DM_DIR);
}
/*-----------------------------------------------------------------
}
}
-/*
- * devfs stuff.
- */
-static int register_with_devfs(struct hash_cell *hc)
-{
- struct gendisk *disk = dm_disk(hc->md);
-
- devfs_mk_bdev(MKDEV(disk->major, disk->first_minor),
- S_IFBLK | S_IRUSR | S_IWUSR | S_IRGRP,
- DM_DIR "/%s", hc->name);
- return 0;
-}
-
-static int unregister_with_devfs(struct hash_cell *hc)
-{
- devfs_remove(DM_DIR"/%s", hc->name);
- return 0;
-}
-
/*
* The kdev_t and uuid of a device can never change once it is
* initially inserted.
}
list_add(&cell->uuid_list, _uuid_buckets + hash_str(uuid));
}
- register_with_devfs(cell);
dm_get(md);
dm_set_mdptr(md, cell);
up_write(&_hash_lock);
/* remove from the dev hash */
list_del(&hc->uuid_list);
list_del(&hc->name_list);
- unregister_with_devfs(hc);
dm_set_mdptr(hc->md, NULL);
table = dm_get_table(hc->md);
/*
* rename and move the name cell.
*/
- unregister_with_devfs(hc);
-
list_del(&hc->name_list);
old_name = hc->name;
hc->name = new_name;
list_add(&hc->name_list, _name_buckets + hash_str(new_name));
- /* rename the device node in devfs */
- register_with_devfs(hc);
-
/*
* Wake up any dm event waiters.
*/
return __get_name_cell(param->name);
md = dm_get_md(huge_decode_dev(param->dev));
- if (md)
- mdptr = dm_get_mdptr(md);
+ if (!md)
+ goto out;
+
+ mdptr = dm_get_mdptr(md);
+ if (!mdptr)
+ dm_put(md);
+out:
return mdptr;
}
static int do_suspend(struct dm_ioctl *param)
{
int r = 0;
- int do_lockfs = 1;
+ unsigned suspend_flags = DM_SUSPEND_LOCKFS_FLAG;
struct mapped_device *md;
md = find_device(param);
return -ENXIO;
if (param->flags & DM_SKIP_LOCKFS_FLAG)
- do_lockfs = 0;
+ suspend_flags &= ~DM_SUSPEND_LOCKFS_FLAG;
+ if (param->flags & DM_NOFLUSH_FLAG)
+ suspend_flags |= DM_SUSPEND_NOFLUSH_FLAG;
if (!dm_suspended(md))
- r = dm_suspend(md, do_lockfs);
+ r = dm_suspend(md, suspend_flags);
if (!r)
r = __dev_status(md, param);
static int do_resume(struct dm_ioctl *param)
{
int r = 0;
- int do_lockfs = 1;
+ unsigned suspend_flags = DM_SUSPEND_LOCKFS_FLAG;
struct hash_cell *hc;
struct mapped_device *md;
struct dm_table *new_map;
if (new_map) {
/* Suspend if it isn't already suspended */
if (param->flags & DM_SKIP_LOCKFS_FLAG)
- do_lockfs = 0;
+ suspend_flags &= ~DM_SUSPEND_LOCKFS_FLAG;
+ if (param->flags & DM_NOFLUSH_FLAG)
+ suspend_flags |= DM_SUSPEND_NOFLUSH_FLAG;
if (!dm_suspended(md))
- dm_suspend(md, do_lockfs);
+ dm_suspend(md, suspend_flags);
r = dm_swap_table(md, new_map);
if (r) {
static struct miscdevice _dm_misc = {
.minor = MISC_DYNAMIC_MINOR,
.name = DM_NAME,
- .devfs_name = "mapper/control",
.fops = &_ctl_fops
};