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bcachefs: Some fixes for building in userspace

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userspace allocators don't align allocations as nicely as kernel
allocators, which meant that in some cases we weren't allocating big
enough bvec arrays - just make the calculations more rigorous and
explicit to fix it.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2018-11-03 20:04:54 -04:00 committed by Kent Overstreet
parent b564513cf9
commit ac10a9611d
3 changed files with 12 additions and 5 deletions
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2
fs/bcachefs/bset.c
View file

@ -1672,7 +1672,7 @@ struct bkey_packed *bch2_btree_node_iter_prev_filter(struct btree_node_iter *ite
struct bkey_packed *orig_pos = bch2_btree_node_iter_peek_all(iter, b);
struct btree_node_iter_set *set;
struct bset_tree *t;
unsigned end;
unsigned end = 0;
bch2_btree_node_iter_verify(iter, b);

3
fs/bcachefs/btree_io.c
View file

@ -1881,7 +1881,8 @@ void __bch2_btree_node_write(struct bch_fs *c, struct btree *b,
trace_btree_write(b, bytes_to_write, sectors_to_write);
wbio = container_of(bio_alloc_bioset(NULL, 1 << order,
wbio = container_of(bio_alloc_bioset(NULL,
buf_pages(data, sectors_to_write << 9),
REQ_OP_WRITE|REQ_META|REQ_FUA,
GFP_NOIO,
&c->btree_bio),

12
fs/bcachefs/journal_io.c
View file

@ -429,7 +429,6 @@ static int journal_read_bucket(struct bch_dev *ca,
{
struct bch_fs *c = ca->fs;
struct journal_device *ja = &ca->journal;
struct bio *bio = ja->bio;
struct jset *j = NULL;
unsigned sectors, sectors_read = 0;
u64 offset = bucket_to_sector(ca, ja->buckets[bucket]),
@ -441,15 +440,22 @@ static int journal_read_bucket(struct bch_dev *ca,
while (offset < end) {
if (!sectors_read) {
reread: sectors_read = min_t(unsigned,
struct bio *bio;
unsigned nr_bvecs;
reread:
sectors_read = min_t(unsigned,
end - offset, buf->size >> 9);
nr_bvecs = buf_pages(buf->data, sectors_read << 9);
bio = bio_kmalloc(nr_bvecs, GFP_KERNEL);
bio_init(bio, ca->disk_sb.bdev, bio->bi_inline_vecs, nr_bvecs, REQ_OP_READ);
bio_reset(bio, ca->disk_sb.bdev, REQ_OP_READ);
bio->bi_iter.bi_sector = offset;
bio->bi_iter.bi_size = sectors_read << 9;
bch2_bio_map(bio, buf->data);
ret = submit_bio_wait(bio);
kfree(bio);
if (bch2_dev_io_err_on(ret, ca,
"journal read from sector %llu",