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Commit 3c45bfc1 authored by Dulshani Gunawardhana's avatar Dulshani Gunawardhana Committed by Chris Mason
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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
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+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 */