dm.c (8446fe9255be821cb38ffd306d7e8edc4b9ea662) dm.c (977115c0f664e016a6b2774d4f97116ade23d732)
1/*
2 * Copyright (C) 2001, 2002 Sistina Software (UK) Limited.
3 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
4 *
5 * This file is released under the GPL.
6 */
7
8#include "dm-core.h"

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2370}
2371
2372/*
2373 * Functions to lock and unlock any filesystem running on the
2374 * device.
2375 */
2376static int lock_fs(struct mapped_device *md)
2377{
1/*
2 * Copyright (C) 2001, 2002 Sistina Software (UK) Limited.
3 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
4 *
5 * This file is released under the GPL.
6 */
7
8#include "dm-core.h"

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2370}
2371
2372/*
2373 * Functions to lock and unlock any filesystem running on the
2374 * device.
2375 */
2376static int lock_fs(struct mapped_device *md)
2377{
2378 struct block_device *bdev;
2379 int r;
2380
2381 WARN_ON(test_bit(DMF_FROZEN, &md->flags));
2382
2378 int r;
2379
2380 WARN_ON(test_bit(DMF_FROZEN, &md->flags));
2381
2383 bdev = bdget_disk(md->disk, 0);
2384 if (!bdev)
2385 return -ENOMEM;
2386 r = freeze_bdev(bdev);
2387 bdput(bdev);
2382 r = freeze_bdev(md->disk->part0);
2388 if (!r)
2389 set_bit(DMF_FROZEN, &md->flags);
2390 return r;
2391}
2392
2393static void unlock_fs(struct mapped_device *md)
2394{
2383 if (!r)
2384 set_bit(DMF_FROZEN, &md->flags);
2385 return r;
2386}
2387
2388static void unlock_fs(struct mapped_device *md)
2389{
2395 struct block_device *bdev;
2396
2397 if (!test_bit(DMF_FROZEN, &md->flags))
2398 return;
2390 if (!test_bit(DMF_FROZEN, &md->flags))
2391 return;
2399
2400 bdev = bdget_disk(md->disk, 0);
2401 if (!bdev)
2402 return;
2403 thaw_bdev(bdev);
2404 bdput(bdev);
2392 thaw_bdev(md->disk->part0);
2405 clear_bit(DMF_FROZEN, &md->flags);
2406}
2407
2408/*
2409 * @suspend_flags: DM_SUSPEND_LOCKFS_FLAG and/or DM_SUSPEND_NOFLUSH_FLAG
2410 * @task_state: e.g. TASK_INTERRUPTIBLE or TASK_UNINTERRUPTIBLE
2411 * @dmf_suspended_flag: DMF_SUSPENDED or DMF_SUSPENDED_INTERNALLY
2412 *

--- 702 unchanged lines hidden --- 		2393 clear_bit(DMF_FROZEN, &md->flags);
2394}
2395
2396/*
2397 * @suspend_flags: DM_SUSPEND_LOCKFS_FLAG and/or DM_SUSPEND_NOFLUSH_FLAG
2398 * @task_state: e.g. TASK_INTERRUPTIBLE or TASK_UNINTERRUPTIBLE
2399 * @dmf_suspended_flag: DMF_SUSPENDED or DMF_SUSPENDED_INTERNALLY
2400 *

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