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-rw-r--r--fs/btrfs/space-info.h48
1 files changed, 48 insertions, 0 deletions
diff --git a/fs/btrfs/space-info.h b/fs/btrfs/space-info.h
index a733458fd13b..4db8a0267c16 100644
--- a/fs/btrfs/space-info.h
+++ b/fs/btrfs/space-info.h
@@ -94,6 +94,7 @@ enum btrfs_flush_state {
};
struct btrfs_space_info {
+ struct btrfs_fs_info *fs_info;
spinlock_t lock;
u64 total_bytes; /* total bytes in the space,
@@ -165,6 +166,47 @@ struct btrfs_space_info {
struct kobject kobj;
struct kobject *block_group_kobjs[BTRFS_NR_RAID_TYPES];
+
+ /*
+ * Monotonically increasing counter of block group reclaim attempts
+ * Exposed in /sys/fs/<uuid>/allocation/<type>/reclaim_count
+ */
+ u64 reclaim_count;
+
+ /*
+ * Monotonically increasing counter of reclaimed bytes
+ * Exposed in /sys/fs/<uuid>/allocation/<type>/reclaim_bytes
+ */
+ u64 reclaim_bytes;
+
+ /*
+ * Monotonically increasing counter of reclaim errors
+ * Exposed in /sys/fs/<uuid>/allocation/<type>/reclaim_errors
+ */
+ u64 reclaim_errors;
+
+ /*
+ * If true, use the dynamic relocation threshold, instead of the
+ * fixed bg_reclaim_threshold.
+ */
+ bool dynamic_reclaim;
+
+ /*
+ * Periodically check all block groups against the reclaim
+ * threshold in the cleaner thread.
+ */
+ bool periodic_reclaim;
+
+ /*
+ * Periodic reclaim should be a no-op if a space_info hasn't
+ * freed any space since the last time we tried.
+ */
+ bool periodic_reclaim_ready;
+
+ /*
+ * Net bytes freed or allocated since the last reclaim pass.
+ */
+ s64 reclaimable_bytes;
};
struct reserve_ticket {
@@ -247,4 +289,10 @@ void btrfs_dump_space_info_for_trans_abort(struct btrfs_fs_info *fs_info);
void btrfs_init_async_reclaim_work(struct btrfs_fs_info *fs_info);
u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo);
+void btrfs_space_info_update_reclaimable(struct btrfs_space_info *space_info, s64 bytes);
+void btrfs_set_periodic_reclaim_ready(struct btrfs_space_info *space_info, bool ready);
+bool btrfs_should_periodic_reclaim(struct btrfs_space_info *space_info);
+int btrfs_calc_reclaim_threshold(struct btrfs_space_info *space_info);
+int btrfs_reclaim_sweep(struct btrfs_fs_info *fs_info);
+
#endif /* BTRFS_SPACE_INFO_H */