diff options
| author | Brian Foster <bfoster@redhat.com> | 2023-07-19 08:53:05 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-10-22 17:10:08 -0400 |
| commit | eabb10dc9561525661d4fda229134a6f8716e007 (patch) | |
| tree | 99bedcabba20f58f0e2f4f1bdc37afadb74dc15d /fs/bcachefs/bkey_methods.h | |
| parent | 78623ee0d0d72c497967be41277f022c0052631c (diff) | |
bcachefs: support btree updates of prejournaled keys
Introduce support for prejournaled key updates. This allows a
transaction to commit an update for a key that already exists (and
is pinned) in the journal. This is required for btree write buffer
updates as the current scheme of journaling both on write buffer
insertion and write buffer (slow path) flush is unsafe in certain
crash recovery scenarios.
Create a small trans update wrapper to pass along the seq where the
key resides into the btree_insert_entry. From there, trans commit
passes the seq into the btree insert path where it is used to manage
the journal pin for the associated btree leaf.
Note that this patch only introduces the underlying mechanism and
otherwise includes no functional changes.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs/bkey_methods.h')
| -rw-r--r-- | fs/bcachefs/bkey_methods.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/bcachefs/bkey_methods.h b/fs/bcachefs/bkey_methods.h index d1ff83a73511..d7b63769068c 100644 --- a/fs/bcachefs/bkey_methods.h +++ b/fs/bcachefs/bkey_methods.h @@ -98,6 +98,7 @@ static inline int bch2_mark_key(struct btree_trans *trans, enum btree_update_flags { __BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE = __BTREE_ITER_FLAGS_END, __BTREE_UPDATE_NOJOURNAL, + __BTREE_UPDATE_PREJOURNAL, __BTREE_UPDATE_KEY_CACHE_RECLAIM, __BTREE_TRIGGER_NORUN, /* Don't run triggers at all */ @@ -112,6 +113,7 @@ enum btree_update_flags { #define BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE (1U << __BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE) #define BTREE_UPDATE_NOJOURNAL (1U << __BTREE_UPDATE_NOJOURNAL) +#define BTREE_UPDATE_PREJOURNAL (1U << __BTREE_UPDATE_PREJOURNAL) #define BTREE_UPDATE_KEY_CACHE_RECLAIM (1U << __BTREE_UPDATE_KEY_CACHE_RECLAIM) #define BTREE_TRIGGER_NORUN (1U << __BTREE_TRIGGER_NORUN) |