提交 3c45bfc1 编写于 作者: D Dulshani Gunawardhana 提交者: Chris Mason

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: NDulshani Gunawardhana <dulshani.gunawardhana89@gmail.com>
Reviewed-by: NZach Brown <zab@redhat.com>
Signed-off-by: NJosef Bacik <jbacik@fusionio.com>
Signed-off-by: NChris Mason <chris.mason@fusionio.com>
上级 95e94d14
......@@ -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 */
......
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