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| author | Kent Overstreet <kent.overstreet@linux.dev> | 2025-01-23 13:06:35 -0500 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2025-03-14 21:02:13 -0400 |
| commit | 2e853fdbc74411643b00a14ee75ca234675a9bf2 (patch) | |
| tree | 31b731b33297325b4fba850d446bda1c810bd3dd | |
| parent | 199a3578edec89069f1e07cf92135c8fce50e706 (diff) | |
| download | linux-2e853fdbc74411643b00a14ee75ca234675a9bf2.tar.gz linux-2e853fdbc74411643b00a14ee75ca234675a9bf2.zip | |
bcachefs: Don't touch journal_buf->data->seq in journal_res_get
This is a small optimization, reducing the number of cachelines we touch
in the fast path - and it's also necessary for the next patch that
increases JOURNAL_BUF_NR.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
| -rw-r--r-- | fs/bcachefs/journal.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/bcachefs/journal.h b/fs/bcachefs/journal.h index 1e5fcfe3624a..e514d664b8ae 100644 --- a/fs/bcachefs/journal.h +++ b/fs/bcachefs/journal.h @@ -364,7 +364,10 @@ static inline int journal_res_get_fast(struct journal *j, res->ref = true; res->offset = old.cur_entry_offset; - res->seq = le64_to_cpu(j->buf[old.idx].data->seq); + res->seq = journal_cur_seq(j); + res->seq -= (res->seq - old.idx) & JOURNAL_BUF_MASK; + + EBUG_ON(res->seq != le64_to_cpu(j->buf[old.idx].data->seq)); return 1; } |