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Btrfs: sysfs: add pointer to access fs_info from fs_devices

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adds fs_info pointer with struct btrfs_fs_devices.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
This commit is contained in:
Anand Jain
2015-03-10 06:38:31 +08:00
committed by David Sterba
parent c73eccf75b
commit 5a13f4308c
3 changed files with 25 additions and 0 deletions
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18
fs/btrfs/volumes.c
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@@ -6733,3 +6733,21 @@ void btrfs_update_commit_device_bytes_used(struct btrfs_root *root,
}
unlock_chunks(root);
}
void btrfs_set_fs_info_ptr(struct btrfs_fs_info *fs_info)
{
struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
while (fs_devices) {
fs_devices->fs_info = fs_info;
fs_devices = fs_devices->seed;
}
}
void btrfs_reset_fs_info_ptr(struct btrfs_fs_info *fs_info)
{
struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
while (fs_devices) {
fs_devices->fs_info = NULL;
fs_devices = fs_devices->seed;
}
}