diff options
Diffstat (limited to 'fs/btrfs/volumes.h')
| -rw-r--r-- | fs/btrfs/volumes.h | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index 2185de72ff7..5139a833f72 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -23,13 +23,22 @@ #include "async-thread.h" struct buffer_head; +struct btrfs_pending_bios { + struct bio *head; + struct bio *tail; +}; + struct btrfs_device { struct list_head dev_list; struct list_head dev_alloc_list; struct btrfs_fs_devices *fs_devices; struct btrfs_root *dev_root; - struct bio *pending_bios; - struct bio *pending_bio_tail; + + /* regular prio bios */ + struct btrfs_pending_bios pending_bios; + /* WRITE_SYNC bios */ + struct btrfs_pending_bios pending_sync_bios; + int running_pending; u64 generation; @@ -52,6 +61,9 @@ struct btrfs_device { /* size of the device */ u64 total_bytes; + /* size of the disk */ + u64 disk_total_bytes; + /* bytes used */ u64 bytes_used; @@ -84,7 +96,12 @@ struct btrfs_fs_devices { u64 rw_devices; u64 total_rw_bytes; struct block_device *latest_bdev; - /* all of the devices in the FS */ + + /* all of the devices in the FS, protected by a mutex + * so we can safely walk it to write out the supers without + * worrying about add/remove by the multi-device code + */ + struct mutex device_list_mutex; struct list_head devices; /* devices not currently being allocated */ @@ -95,6 +112,11 @@ struct btrfs_fs_devices { int seeding; int opened; + + /* set when we find or add a device that doesn't have the + * nonrot flag set + */ + int rotating; }; struct btrfs_bio_stripe { |