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Commit 97288f2c authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Chris Mason
Browse files

Btrfs: corret fmode_t annotations 



Make sure to propagate fmode_t properly and use the right constants for
it.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent 6e430f94

fs/btrfs/super.c

+9 −5
Original line number Diff line number Diff line
@@ -242,7 +242,7 @@ int btrfs_parse_options(struct btrfs_root *root, char *options) 
 * All other options will be parsed on much later in the mount process and

 * only when we need to allocate a new super block.

 */

static int btrfs_parse_early_options(const char *options, int flags,

static int btrfs_parse_early_options(const char *options, fmode_t flags,

		void *holder, char **subvol_name,

		struct btrfs_fs_devices **fs_devices)

{
@@ -418,18 +418,22 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags, 
	struct super_block *s;

	struct dentry *root;

	struct btrfs_fs_devices *fs_devices = NULL;

	fmode_t mode = FMODE_READ;

	int error = 0;



	error = btrfs_parse_early_options(data, flags, fs_type,

	if (!(flags & MS_RDONLY))

		mode |= FMODE_WRITE;



	error = btrfs_parse_early_options(data, mode, fs_type,

					  &subvol_name, &fs_devices);

	if (error)

		goto error;



	error = btrfs_scan_one_device(dev_name, flags, fs_type, &fs_devices);

	error = btrfs_scan_one_device(dev_name, mode, fs_type, &fs_devices);

	if (error)

		goto error_free_subvol_name;



	error = btrfs_open_devices(fs_devices, flags, fs_type);

	error = btrfs_open_devices(fs_devices, mode, fs_type);

	if (error)

		goto error_free_subvol_name;
@@ -591,7 +595,7 @@ static long btrfs_control_ioctl(struct file *file, unsigned int cmd, 
	len = strnlen(vol->name, BTRFS_PATH_NAME_MAX);

	switch (cmd) {

	case BTRFS_IOC_SCAN_DEV:

		ret = btrfs_scan_one_device(vol->name, MS_RDONLY,

		ret = btrfs_scan_one_device(vol->name, FMODE_READ,

					    &btrfs_fs_type, &fs_devices);

		break;

	}

fs/btrfs/volumes.c

+9 −9
Original line number Diff line number Diff line
@@ -394,7 +394,7 @@ int btrfs_close_devices(struct btrfs_fs_devices *fs_devices) 
}



int __btrfs_open_devices(struct btrfs_fs_devices *fs_devices,

			 int flags, void *holder)

			 fmode_t flags, void *holder)

{

	struct block_device *bdev;

	struct list_head *head = &fs_devices->devices;
@@ -469,7 +469,7 @@ int __btrfs_open_devices(struct btrfs_fs_devices *fs_devices, 
error_brelse:

		brelse(bh);

error_close:

		close_bdev_exclusive(bdev, MS_RDONLY);

		close_bdev_exclusive(bdev, FMODE_READ);

error:

		continue;

	}
@@ -488,7 +488,7 @@ out: 
}



int btrfs_open_devices(struct btrfs_fs_devices *fs_devices,

		       int flags, void *holder)

		       fmode_t flags, void *holder)

{

	int ret;
@@ -507,7 +507,7 @@ int btrfs_open_devices(struct btrfs_fs_devices *fs_devices, 
	return ret;

}



int btrfs_scan_one_device(const char *path, int flags, void *holder,

int btrfs_scan_one_device(const char *path, fmode_t flags, void *holder,

			  struct btrfs_fs_devices **fs_devices_ret)

{

	struct btrfs_super_block *disk_super;
@@ -1008,7 +1008,7 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path) 
			goto out;

		}

	} else {

		bdev = open_bdev_exclusive(device_path, MS_RDONLY,

		bdev = open_bdev_exclusive(device_path, FMODE_READ,

				      root->fs_info->bdev_holder);

		if (IS_ERR(bdev)) {

			ret = PTR_ERR(bdev);
@@ -1078,7 +1078,7 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path) 
		BUG_ON(device->writeable);

		brelse(bh);

		if (bdev)

			close_bdev_exclusive(bdev, MS_RDONLY);

			close_bdev_exclusive(bdev, FMODE_READ);



		if (device->bdev) {

			close_bdev_exclusive(device->bdev, device->mode);
@@ -1121,7 +1121,7 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path) 
	}

	if (bdev) {

		/* one close for us */

		close_bdev_exclusive(bdev, MS_RDONLY);

		close_bdev_exclusive(bdev, FMODE_READ);

	}

	kfree(device->name);

	kfree(device);
@@ -1132,7 +1132,7 @@ error_brelse: 
	brelse(bh);

error_close:

	if (bdev)

		close_bdev_exclusive(bdev, MS_RDONLY);

		close_bdev_exclusive(bdev, FMODE_READ);

out:

	mutex_unlock(&root->fs_info->volume_mutex);

	mutex_unlock(&uuid_mutex);
@@ -2913,7 +2913,7 @@ static int open_seed_devices(struct btrfs_root *root, u8 *fsid) 
		goto out;

	}



	ret = __btrfs_open_devices(fs_devices, MS_RDONLY,

	ret = __btrfs_open_devices(fs_devices, FMODE_READ,

				   root->fs_info->bdev_holder);

	if (ret)

		goto out;

fs/btrfs/volumes.h

+2 −2
Original line number Diff line number Diff line
@@ -135,8 +135,8 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio, 
		  int mirror_num, int async_submit);

int btrfs_read_super_device(struct btrfs_root *root, struct extent_buffer *buf);

int btrfs_open_devices(struct btrfs_fs_devices *fs_devices,

		       int flags, void *holder);

int btrfs_scan_one_device(const char *path, int flags, void *holder,

		       fmode_t flags, void *holder);

int btrfs_scan_one_device(const char *path, fmode_t flags, void *holder,

			  struct btrfs_fs_devices **fs_devices_ret);

int btrfs_close_devices(struct btrfs_fs_devices *fs_devices);

int btrfs_close_extra_devices(struct btrfs_fs_devices *fs_devices);