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bcachefs: Use memcpy_u64s_small() for copying keys 

Small performance optimization; an open coded loop is better than rep ;
movsq for small copies.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2023-05-13 17:21:55 -04:00
parent 73da30e8e0
commit d598a9b7e2
3 changed files with 3 additions and 3 deletions
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2
fs/bcachefs/bkey.c
View File

@ -360,7 +360,7 @@ bool bch2_bkey_pack(struct bkey_packed *out, const struct bkey_i *in,
memmove_u64s((u64 *) out + format->key_u64s,
&in->v,
bkey_val_u64s(&in->k));
memcpy_u64s(out, &tmp, format->key_u64s);
memcpy_u64s_small(out, &tmp, format->key_u64s);
return true;
}

2
fs/bcachefs/bkey_sort.c
View File

@ -188,7 +188,7 @@ unsigned bch2_sort_keys(struct bkey_packed *dst,
}
if (bkey_deleted(in)) {
memcpy_u64s(out, in, bkeyp_key_u64s(f, in));
memcpy_u64s_small(out, in, bkeyp_key_u64s(f, in));
set_bkeyp_val_u64s(f, out, 0);
} else {
bkey_copy(out, in);

2
fs/bcachefs/bset.c
View File

@ -1022,7 +1022,7 @@ void bch2_bset_insert(struct btree *b,
set_btree_bset_end(b, t);
}
memcpy_u64s(where, src,
memcpy_u64s_small(where, src,
bkeyp_key_u64s(f, src));
memcpy_u64s(bkeyp_val(f, where), &insert->v,
bkeyp_val_u64s(f, src));