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Commit 48dae9cf authored by David Sterba's avatar David Sterba
Browse files

btrfs: introduce free_device helper 



A helper to free a device and all it's dynamically allocated members,
like the rcu_string name or flush_bio. This is going to replace all
open coded places.

Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent f06c5965

fs/btrfs/volumes.c

+14 −2
Original line number Diff line number Diff line
@@ -180,6 +180,13 @@ static struct btrfs_fs_devices *alloc_fs_devices(const u8 *fsid) 
	return fs_devs;

}



static void free_device(struct btrfs_device *device)

{

	rcu_string_free(device->name);

	bio_put(device->flush_bio);

	kfree(device);

}



static void free_fs_devices(struct btrfs_fs_devices *fs_devices)

{

	struct btrfs_device *device;
@@ -220,6 +227,11 @@ void btrfs_cleanup_fs_uuids(void) 
	}

}



/*

 * Returns a pointer to a new btrfs_device on success; ERR_PTR() on error.

 * Returned struct is not linked onto any lists and must be destroyed using

 * free_device.

 */

static struct btrfs_device *__alloc_device(void)

{

	struct btrfs_device *dev;
@@ -6257,8 +6269,8 @@ static struct btrfs_device *add_missing_dev(struct btrfs_fs_devices *fs_devices, 
 *		is generated.

 *

 * Return: a pointer to a new &struct btrfs_device on success; ERR_PTR()

 * on error.  Returned struct is not linked onto any lists and can be

 * destroyed with kfree() right away.

 * on error.  Returned struct is not linked onto any lists and must be

 * destroyed with free_device.

 */

struct btrfs_device *btrfs_alloc_device(struct btrfs_fs_info *fs_info,

					const u64 *devid,