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49e5fb4621
This patch will add the following sysfs interface: /sys/fs/btrfs/<UUID>/qgroups/<qgroup_id>/referenced /sys/fs/btrfs/<UUID>/qgroups/<qgroup_id>/exclusive /sys/fs/btrfs/<UUID>/qgroups/<qgroup_id>/max_referenced /sys/fs/btrfs/<UUID>/qgroups/<qgroup_id>/max_exclusive /sys/fs/btrfs/<UUID>/qgroups/<qgroup_id>/limit_flags Which is also available in output of "btrfs qgroup show". /sys/fs/btrfs/<UUID>/qgroups/<qgroup_id>/rsv_data /sys/fs/btrfs/<UUID>/qgroups/<qgroup_id>/rsv_meta_pertrans /sys/fs/btrfs/<UUID>/qgroups/<qgroup_id>/rsv_meta_prealloc The last 3 rsv related members are not visible to users, but can be very useful to debug qgroup limit related bugs. Also, to avoid '/' used in <qgroup_id>, the separator between qgroup level and qgroup id is changed to '_'. The interface is not hidden behind 'debug' as we want this interface to be included into production build and to provide another way to read the qgroup information besides the ioctls. Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
47 lines
1.8 KiB
C
47 lines
1.8 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/kobject.h>
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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 * const btrfs_feature_set_name(enum btrfs_feature_set set);
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int btrfs_sysfs_add_devices_dir(struct btrfs_fs_devices *fs_devices,
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struct btrfs_device *one_device);
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int btrfs_sysfs_remove_devices_dir(struct btrfs_fs_devices *fs_devices,
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struct btrfs_device *one_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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const u8 *fsid);
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void btrfs_sysfs_feature_update(struct btrfs_fs_info *fs_info,
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u64 bit, enum btrfs_feature_set set);
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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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#endif
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