ext4: Add multi block allocator for ext4

[pandora-kernel.git] / include / linux / ext4_fs_sb.h

diff --git a/include/linux/ext4_fs_sb.h b/include/linux/ext4_fs_sb.h
index 38a47ec..abaae2c 100644 (file)
--- a/include/linux/ext4_fs_sb.h
+++ b/include/linux/ext4_fs_sb.h
@@ -91,6 +91,58 @@ struct ext4_sb_info {
        unsigned long s_ext_blocks;
        unsigned long s_ext_extents;
 #endif
+
+       /* for buddy allocator */
+       struct ext4_group_info ***s_group_info;
+       struct inode *s_buddy_cache;
+       long s_blocks_reserved;
+       spinlock_t s_reserve_lock;
+       struct list_head s_active_transaction;
+       struct list_head s_closed_transaction;
+       struct list_head s_committed_transaction;
+       spinlock_t s_md_lock;
+       tid_t s_last_transaction;
+       unsigned short *s_mb_offsets, *s_mb_maxs;
+
+       /* tunables */
+       unsigned long s_stripe;
+       unsigned long s_mb_stream_request;
+       unsigned long s_mb_max_to_scan;
+       unsigned long s_mb_min_to_scan;
+       unsigned long s_mb_stats;
+       unsigned long s_mb_order2_reqs;
+       unsigned long s_mb_group_prealloc;
+       /* where last allocation was done - for stream allocation */
+       unsigned long s_mb_last_group;
+       unsigned long s_mb_last_start;
+
+       /* history to debug policy */
+       struct ext4_mb_history *s_mb_history;
+       int s_mb_history_cur;
+       int s_mb_history_max;
+       int s_mb_history_num;
+       struct proc_dir_entry *s_mb_proc;
+       spinlock_t s_mb_history_lock;
+       int s_mb_history_filter;
+
+       /* stats for buddy allocator */
+       spinlock_t s_mb_pa_lock;
+       atomic_t s_bal_reqs;    /* number of reqs with len > 1 */
+       atomic_t s_bal_success; /* we found long enough chunks */
+       atomic_t s_bal_allocated;       /* in blocks */
+       atomic_t s_bal_ex_scanned;      /* total extents scanned */
+       atomic_t s_bal_goals;   /* goal hits */
+       atomic_t s_bal_breaks;  /* too long searches */
+       atomic_t s_bal_2orders; /* 2^order hits */
+       spinlock_t s_bal_lock;
+       unsigned long s_mb_buddies_generated;
+       unsigned long long s_mb_generation_time;
+       atomic_t s_mb_lost_chunks;
+       atomic_t s_mb_preallocated;
+       atomic_t s_mb_discarded;
+
+       /* locality groups */
+       struct ext4_locality_group *s_locality_groups;
 };
 
 #endif /* _LINUX_EXT4_FS_SB */