diff options
| author | Dulshani Gunawardhana <dulshani.gunawardhana89@gmail.com> | 2013-10-31 09:57:33 +0530 |
|---|---|---|
| committer | Chris Mason <chris.mason@fusionio.com> | 2013-11-11 22:11:26 -0500 |
| commit | 3c45bfc1528ccb8b94c06d5740854bb75f8a92fb (patch) | |
| tree | c1e1084ff83d3e08f3458bfe639f6ad6ace4d63d | |
| parent | 95e94d14b42c1992493ce72492351d4601b274fe (diff) | |
btrfs: Pack struct btrfs_device
Pack the structure btrfs_device in volumes.h to eliminate holes detected
by pahole, thus reducing binary memory footprint.
Signed-off-by: Dulshani Gunawardhana <dulshani.gunawardhana89@gmail.com>
Reviewed-by: Zach Brown <zab@redhat.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| -rw-r--r-- | fs/btrfs/volumes.h | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index 49e0ff01143..8b3cd142b37 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -43,9 +43,8 @@ struct btrfs_device { /* WRITE_SYNC bios */ struct btrfs_pending_bios pending_sync_bios; - int running_pending; u64 generation; - + int running_pending; int writeable; int in_fs_metadata; int missing; @@ -53,11 +52,11 @@ struct btrfs_device { int is_tgtdev_for_dev_replace; spinlock_t io_lock; + /* the mode sent to blkdev_get */ + fmode_t mode; struct block_device *bdev; - /* the mode sent to blkdev_get */ - fmode_t mode; struct rcu_string *name; @@ -78,16 +77,21 @@ struct btrfs_device { /* optimal io width for this device */ u32 io_width; + /* type and info about this device */ + u64 type; /* minimal io size for this device */ u32 sector_size; - /* type and info about this device */ - u64 type; /* physical drive uuid (or lvm uuid) */ u8 uuid[BTRFS_UUID_SIZE]; + /* for sending down flush barriers */ + int nobarriers; + struct bio *flush_bio; + struct completion flush_wait; + /* per-device scrub information */ struct scrub_ctx *scrub_device; @@ -103,10 +107,6 @@ struct btrfs_device { struct radix_tree_root reada_zones; struct radix_tree_root reada_extents; - /* for sending down flush barriers */ - struct bio *flush_bio; - struct completion flush_wait; - int nobarriers; /* disk I/O failure stats. For detailed description refer to * enum btrfs_dev_stat_values in ioctl.h */ |