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| author | Kent Overstreet <kent.overstreet@gmail.com> | 2021-12-31 16:12:54 -0500 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-10-22 17:09:20 -0400 |
| commit | fb64f3fdac7171d1b2c62239d512b749dec9582a (patch) | |
| tree | 14cd9be917bbe84379c3efb06a972bac0bcb76a2 /fs/bcachefs/bcachefs_format.h | |
| parent | f0f41a6d74f7f682327eead3708473c11577b131 (diff) | |
| download | lwn-fb64f3fdac7171d1b2c62239d512b749dec9582a.tar.gz lwn-fb64f3fdac7171d1b2c62239d512b749dec9582a.zip | |
bcachefs: BCH_JSET_ENTRY_log
Add a journal entry type for logging messages, and add an option to use
it to log the transaction name - this makes for a very handy debugging
tool, as with it we can use the 'bcachefs list_journal' command to see
not only what updates were done, but what was doing them.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Diffstat (limited to 'fs/bcachefs/bcachefs_format.h')
| -rw-r--r-- | fs/bcachefs/bcachefs_format.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/bcachefs/bcachefs_format.h b/fs/bcachefs/bcachefs_format.h index 3c0ba301dad5..7eeab46d21b5 100644 --- a/fs/bcachefs/bcachefs_format.h +++ b/fs/bcachefs/bcachefs_format.h @@ -1430,6 +1430,7 @@ LE64_BITMASK(BCH_SB_INODES_USE_KEY_CACHE,struct bch_sb, flags[3], 29, 30); LE64_BITMASK(BCH_SB_JOURNAL_FLUSH_DELAY,struct bch_sb, flags[3], 30, 62); LE64_BITMASK(BCH_SB_JOURNAL_FLUSH_DISABLED,struct bch_sb, flags[3], 62, 63); LE64_BITMASK(BCH_SB_JOURNAL_RECLAIM_DELAY,struct bch_sb, flags[4], 0, 32); +LE64_BITMASK(BCH_SB_JOURNAL_TRANSACTION_NAMES,struct bch_sb, flags[4], 32, 33); /* * Features: @@ -1667,7 +1668,8 @@ static inline __u64 __bset_magic(struct bch_sb *sb) x(usage, 5) \ x(data_usage, 6) \ x(clock, 7) \ - x(dev_usage, 8) + x(dev_usage, 8) \ + x(log, 9) enum { #define x(f, nr) BCH_JSET_ENTRY_##f = nr, @@ -1739,6 +1741,11 @@ struct jset_entry_dev_usage { struct jset_entry_dev_usage_type d[]; } __attribute__((packed)); +struct jset_entry_log { + struct jset_entry entry; + u8 d[]; +} __attribute__((packed)); + /* * On disk format for a journal entry: * seq is monotonically increasing; every journal entry has its own unique |