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Commit 3c45bfc1 authored by Dulshani Gunawardhana's avatar Dulshani Gunawardhana Committed by Chris Mason
Browse files

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: default avatarDulshani Gunawardhana <dulshani.gunawardhana89@gmail.com>
Reviewed-by: default avatarZach Brown <zab@redhat.com>
Signed-off-by: default avatarJosef Bacik <jbacik@fusionio.com>
Signed-off-by: default avatarChris Mason <chris.mason@fusionio.com>
parent 95e94d14

fs/btrfs/volumes.h

+10 −10
Original line number Diff line number Diff line
@@ -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 */