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5e2009f939
Readers currently accumulate all finalized log tree deltas into a single bucket for deciding whether they are already in fs_root or not, but, finalized trees that aren't inputs to a current merge will have higher seqs, and thus we may be double applying deltas already merged into fs_root. To distinguish, scoutfs_totl_merge_contribute() needs to know the merge status item seq. We change wkic's get_roots() from using the SCOUTFS_NET_CMD_GET_ROOTS RPC to reading the superblock directly. This is needed because totl merge resolution has to use the same data as the btree roots it is operating on, thus we can't grab it from a SCOUTFS_NET_CMD_GET_ROOTS packet - it likely is different. Signed-off-by: Auke Kok <auke.kok@versity.com>
65 lines
2.5 KiB
C
65 lines
2.5 KiB
C
#ifndef _SCOUTFS_FOREST_H_
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#define _SCOUTFS_FOREST_H_
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struct scoutfs_alloc;
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struct scoutfs_block_writer;
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struct scoutfs_block;
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struct scoutfs_lock;
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#include "btree.h"
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/* caller gives an item to the callback */
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enum {
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FIC_FS_ROOT = (1 << 0),
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FIC_MERGE_INPUT = (1 << 1),
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};
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typedef int (*scoutfs_forest_item_cb)(struct super_block *sb, struct scoutfs_key *key, u64 seq,
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u8 flags, void *val, int val_len, int fic, void *arg);
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int scoutfs_forest_next_hint(struct super_block *sb, struct scoutfs_key *key,
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struct scoutfs_key *next);
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int scoutfs_forest_read_items(struct super_block *sb,
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struct scoutfs_key *key,
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struct scoutfs_key *bloom_key,
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struct scoutfs_key *start,
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struct scoutfs_key *end,
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scoutfs_forest_item_cb cb, void *arg);
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int scoutfs_forest_read_items_roots(struct super_block *sb, struct scoutfs_net_roots *roots,
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u64 merge_input_seq, struct scoutfs_key *key,
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struct scoutfs_key *bloom_key, struct scoutfs_key *start,
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struct scoutfs_key *end, scoutfs_forest_item_cb cb, void *arg);
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int scoutfs_forest_set_bloom_bits(struct super_block *sb,
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struct scoutfs_lock *lock);
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void scoutfs_forest_set_max_seq(struct super_block *sb, u64 max_seq);
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int scoutfs_forest_get_max_seq(struct super_block *sb,
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struct scoutfs_super_block *super,
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u64 *seq);
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int scoutfs_forest_insert_list(struct super_block *sb,
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struct scoutfs_btree_item_list *lst);
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int scoutfs_forest_srch_add(struct super_block *sb, u64 hash, u64 ino, u64 id);
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void scoutfs_forest_inc_inode_count(struct super_block *sb);
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void scoutfs_forest_dec_inode_count(struct super_block *sb);
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int scoutfs_forest_inode_count(struct super_block *sb, struct scoutfs_super_block *super,
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u64 *inode_count);
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void scoutfs_forest_init_btrees(struct super_block *sb,
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struct scoutfs_alloc *alloc,
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struct scoutfs_block_writer *wri,
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struct scoutfs_log_trees *lt);
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void scoutfs_forest_get_btrees(struct super_block *sb,
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struct scoutfs_log_trees *lt);
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/* > 0 error codes */
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#define SCOUTFS_DELTA_COMBINED 1 /* src val was combined, drop src */
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#define SCOUTFS_DELTA_COMBINED_NULL 2 /* combined val has no data, drop both */
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int scoutfs_forest_combine_deltas(struct scoutfs_key *key, void *dst, int dst_len,
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void *src, int src_len);
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int scoutfs_forest_setup(struct super_block *sb);
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void scoutfs_forest_start(struct super_block *sb);
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void scoutfs_forest_stop(struct super_block *sb);
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void scoutfs_forest_destroy(struct super_block *sb);
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#endif
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