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https://github.com/torvalds/linux
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21aec962df
Implement a hash table, using cuckoo hashing, for empty buckets that are waiting on a journal commit before they can be reused. This replaces the journal_seq field of bucket_mark, and is part of eventually getting rid of the in memory bucket array. We may need to make bch2_bucket_needs_journal_commit() lockless, pending profiling and testing. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
24 lines
495 B
C
24 lines
495 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BUCKETS_WAITING_FOR_JOURNAL_TYPES_H
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#define _BUCKETS_WAITING_FOR_JOURNAL_TYPES_H
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#include <linux/siphash.h>
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struct bucket_hashed {
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u64 dev_bucket;
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u64 journal_seq;
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};
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struct buckets_waiting_for_journal_table {
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unsigned bits;
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u64 hash_seeds[3];
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struct bucket_hashed d[];
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};
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struct buckets_waiting_for_journal {
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struct mutex lock;
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struct buckets_waiting_for_journal_table *t;
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};
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#endif /* _BUCKETS_WAITING_FOR_JOURNAL_TYPES_H */
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