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bcachefs: Make replicas_delta_list smaller

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2019-10-19 22:22:29 -04:00 • committed by Kent Overstreet
parent fbc519ab2e
commit 77d63522f0
3 changed files with 20 additions and 10 deletions
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6
fs/bcachefs/btree_update_leaf.c
View file

@ -587,9 +587,11 @@ out:
bch2_journal_res_put(&c->journal, &trans->journal_res);
out_clear_replicas:
if (trans->fs_usage_deltas) {
memset(&trans->fs_usage_deltas->fs_usage, 0,
sizeof(trans->fs_usage_deltas->fs_usage));
trans->fs_usage_deltas->used = 0;
memset((void *) trans->fs_usage_deltas +
offsetof(struct replicas_delta_list, memset_start), 0,
(void *) &trans->fs_usage_deltas->memset_end -
(void *) &trans->fs_usage_deltas->memset_start);
}
return ret;

18
fs/bcachefs/buckets.c
View file

@ -585,9 +585,14 @@ void bch2_replicas_delta_list_apply(struct bch_fs *c,
{
struct replicas_delta *d = r->d;
struct replicas_delta *top = (void *) r->d + r->used;
unsigned i;
acc_u64s((u64 *) fs_usage,
(u64 *) &r->fs_usage, sizeof(*fs_usage) / sizeof(u64));
fs_usage->nr_inodes += r->nr_inodes;
for (i = 0; i < BCH_REPLICAS_MAX; i++) {
fs_usage->reserved += r->persistent_reserved[i];
fs_usage->persistent_reserved[i] += r->persistent_reserved[i];
}
while (d != top) {
BUG_ON((void *) d > (void *) top);
@ -1739,9 +1744,9 @@ int bch2_trans_mark_key(struct btree_trans *trans, struct bkey_s_c k,
d = replicas_deltas_realloc(trans, 0);
if (!(flags & BCH_BUCKET_MARK_OVERWRITE))
d->fs_usage.nr_inodes++;
d->nr_inodes++;
else
d->fs_usage.nr_inodes--;
d->nr_inodes--;
return 0;
case KEY_TYPE_reservation: {
unsigned replicas = bkey_s_c_to_reservation(k).v->nr_replicas;
@ -1750,10 +1755,9 @@ int bch2_trans_mark_key(struct btree_trans *trans, struct bkey_s_c k,
sectors *= replicas;
replicas = clamp_t(unsigned, replicas, 1,
ARRAY_SIZE(d->fs_usage.persistent_reserved));
ARRAY_SIZE(d->persistent_reserved));
d->fs_usage.reserved += sectors;
d->fs_usage.persistent_reserved[replicas - 1] += sectors;
d->persistent_reserved[replicas - 1] += sectors;
return 0;
}
case KEY_TYPE_reflink_p:

6
fs/bcachefs/buckets_types.h
View file

@ -100,7 +100,11 @@ struct replicas_delta {
struct replicas_delta_list {
unsigned size;
unsigned used;
struct bch_fs_usage fs_usage;
struct {} memset_start;
u64 nr_inodes;
u64 persistent_reserved[BCH_REPLICAS_MAX];
struct {} memset_end;
struct replicas_delta d[0];
};