e426286cfa
For testing purposes allow to configure the read policy via module parameter from the beginning. Available only with CONFIG_BTRFS_EXPERIMENTAL Examples: - Set the RAID1 balancing method to round-robin with a custom min_contig_read of 4k: $ modprobe btrfs read_policy=round-robin:4096 - Set the round-robin balancing method with the default min_contiguous_read: $ modprobe btrfs read_policy=round-robin - Set the "devid" balancing method, defaulting to the latest device: $ modprobe btrfs read_policy=devid Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
57 lines
2 KiB
C
57 lines
2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef BTRFS_SYSFS_H
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#define BTRFS_SYSFS_H
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#include <linux/types.h>
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#include <linux/compiler_types.h>
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#include <linux/kobject.h>
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struct btrfs_fs_info;
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struct btrfs_device;
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struct btrfs_fs_devices;
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struct btrfs_block_group;
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struct btrfs_space_info;
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struct btrfs_qgroup;
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enum btrfs_feature_set {
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FEAT_COMPAT,
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FEAT_COMPAT_RO,
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FEAT_INCOMPAT,
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FEAT_MAX
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};
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char *btrfs_printable_features(enum btrfs_feature_set set, u64 flags);
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const char *btrfs_feature_set_name(enum btrfs_feature_set set);
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int btrfs_sysfs_add_device(struct btrfs_device *device);
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void btrfs_sysfs_remove_device(struct btrfs_device *device);
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int btrfs_sysfs_add_fsid(struct btrfs_fs_devices *fs_devs);
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void btrfs_sysfs_remove_fsid(struct btrfs_fs_devices *fs_devs);
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void btrfs_sysfs_update_sprout_fsid(struct btrfs_fs_devices *fs_devices);
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void btrfs_sysfs_feature_update(struct btrfs_fs_info *fs_info);
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void btrfs_kobject_uevent(struct block_device *bdev, enum kobject_action action);
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int __init btrfs_init_sysfs(void);
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void __cold btrfs_exit_sysfs(void);
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int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info);
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void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info);
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void btrfs_sysfs_add_block_group_type(struct btrfs_block_group *cache);
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int btrfs_sysfs_add_space_info_type(struct btrfs_fs_info *fs_info,
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struct btrfs_space_info *space_info);
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void btrfs_sysfs_remove_space_info(struct btrfs_space_info *space_info);
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void btrfs_sysfs_update_devid(struct btrfs_device *device);
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int btrfs_sysfs_add_one_qgroup(struct btrfs_fs_info *fs_info,
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struct btrfs_qgroup *qgroup);
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void btrfs_sysfs_del_qgroups(struct btrfs_fs_info *fs_info);
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int btrfs_sysfs_add_qgroups(struct btrfs_fs_info *fs_info);
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void btrfs_sysfs_del_one_qgroup(struct btrfs_fs_info *fs_info,
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struct btrfs_qgroup *qgroup);
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int btrfs_read_policy_to_enum(const char *str, s64 *value);
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#ifdef CONFIG_BTRFS_EXPERIMENTAL
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int __init btrfs_read_policy_init(void);
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char *btrfs_get_mod_read_policy(void);
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#endif
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#endif
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