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authorKent Overstreet <kent.overstreet@linux.dev>2022-10-14 07:02:36 -0400
committerKent Overstreet <kent.overstreet@linux.dev>2023-03-13 11:34:48 -0400
commitbb70dcabc5ea60aa048c24c2651087d62b0fa00a (patch)
treef5a541d7de52e7a8ad7dcb89cc2bffc1980adc83
parent109e91f4e44ecd76445a780302bb037e4863185f (diff)
bcachefs: Don't use key cache during fsck
The btree key cache mainly helps with lock contention, at the cost of additional memory overhead. During some fsck passes the memory overhead really matters, but fsck is single threaded so lock contention is an issue - so skipping the key cache during fsck will help with performance. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
-rw-r--r--fs/bcachefs/backpointers.c5
-rw-r--r--fs/bcachefs/backpointers.h2
-rw-r--r--fs/bcachefs/ec.c3
-rw-r--r--fs/bcachefs/move.c3
4 files changed, 8 insertions, 5 deletions
diff --git a/fs/bcachefs/backpointers.c b/fs/bcachefs/backpointers.c
index 20cd5bf349c4..3978c0b50f20 100644
--- a/fs/bcachefs/backpointers.c
+++ b/fs/bcachefs/backpointers.c
@@ -300,7 +300,8 @@ err:
int bch2_get_next_backpointer(struct btree_trans *trans,
struct bpos bucket, int gen,
u64 *bp_offset,
- struct bch_backpointer *dst)
+ struct bch_backpointer *dst,
+ unsigned iter_flags)
{
struct bch_fs *c = trans->c;
struct bpos bp_pos, bp_end_pos;
@@ -921,7 +922,7 @@ static int check_one_backpointer(struct btree_trans *trans,
struct printbuf buf = PRINTBUF;
int ret;
- ret = bch2_get_next_backpointer(trans, bucket, -1, bp_offset, &bp);
+ ret = bch2_get_next_backpointer(trans, bucket, -1, bp_offset, &bp, 0);
if (ret || *bp_offset == U64_MAX)
return ret;
diff --git a/fs/bcachefs/backpointers.h b/fs/bcachefs/backpointers.h
index e1506492f022..153870d4e9a0 100644
--- a/fs/bcachefs/backpointers.h
+++ b/fs/bcachefs/backpointers.h
@@ -118,7 +118,7 @@ static inline void bch2_extent_ptr_to_bp(struct bch_fs *c,
}
int bch2_get_next_backpointer(struct btree_trans *, struct bpos, int,
- u64 *, struct bch_backpointer *);
+ u64 *, struct bch_backpointer *, unsigned);
struct bkey_s_c bch2_backpointer_get_key(struct btree_trans *, struct btree_iter *,
struct bpos, u64, struct bch_backpointer);
struct btree *bch2_backpointer_get_node(struct btree_trans *, struct btree_iter *,
diff --git a/fs/bcachefs/ec.c b/fs/bcachefs/ec.c
index c7ac2894db2e..7028fb718ebf 100644
--- a/fs/bcachefs/ec.c
+++ b/fs/bcachefs/ec.c
@@ -841,7 +841,8 @@ static int ec_stripe_update_extent(struct btree_trans *trans,
struct bkey_i *n;
int ret, dev, block;
- ret = bch2_get_next_backpointer(trans, bucket, gen, bp_offset, &bp);
+ ret = bch2_get_next_backpointer(trans, bucket, gen,
+ bp_offset, &bp, BTREE_ITER_CACHED);
if (ret)
return ret;
if (*bp_offset == U64_MAX)
diff --git a/fs/bcachefs/move.c b/fs/bcachefs/move.c
index 94b808951e2d..918cbee51daf 100644
--- a/fs/bcachefs/move.c
+++ b/fs/bcachefs/move.c
@@ -683,7 +683,8 @@ int __bch2_evacuate_bucket(struct moving_context *ctxt,
bch2_trans_begin(&trans);
ret = bch2_get_next_backpointer(&trans, bucket, gen,
- &bp_offset, &bp);
+ &bp_offset, &bp,
+ BTREE_ITER_CACHED);
if (bch2_err_matches(ret, BCH_ERR_transaction_restart))
continue;
if (ret)