diff options
Diffstat (limited to 'fs/ext4/fast_commit.h')
| -rw-r--r-- | fs/ext4/fast_commit.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/fs/ext4/fast_commit.h b/fs/ext4/fast_commit.h index 560bc9ca8c79..06907d485989 100644 --- a/fs/ext4/fast_commit.h +++ b/fs/ext4/fast_commit.h @@ -116,4 +116,44 @@ struct ext4_fc_stats { unsigned long fc_numblks; }; +#define EXT4_FC_REPLAY_REALLOC_INCREMENT 4 + +/* + * Physical block regions added to different inodes due to fast commit + * recovery. These are set during the SCAN phase. During the replay phase, + * our allocator excludes these from its allocation. This ensures that + * we don't accidentally allocating a block that is going to be used by + * another inode. + */ +struct ext4_fc_alloc_region { + ext4_lblk_t lblk; + ext4_fsblk_t pblk; + int ino, len; +}; + +/* + * Fast commit replay state. + */ +struct ext4_fc_replay_state { + int fc_replay_num_tags; + int fc_replay_expected_off; + int fc_current_pass; + int fc_cur_tag; + int fc_crc; + struct ext4_fc_alloc_region *fc_regions; + int fc_regions_size, fc_regions_used, fc_regions_valid; + int *fc_modified_inodes; + int fc_modified_inodes_used, fc_modified_inodes_size; +}; + +#define region_last(__region) (((__region)->lblk) + ((__region)->len) - 1) + +#define fc_for_each_tl(__start, __end, __tl) \ + for (tl = (struct ext4_fc_tl *)start; \ + (u8 *)tl < (u8 *)end; \ + tl = (struct ext4_fc_tl *)((u8 *)tl + \ + sizeof(struct ext4_fc_tl) + \ + + le16_to_cpu(tl->fc_len))) + + #endif /* __FAST_COMMIT_H__ */ |