kevin/linux
1
Fork 0
Code

bcachefs: quota_reserve_range() -> for_each_btree_key_in_subvolume_upto

Browse Source 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-07-17 13:24:28 -04:00
parent 093dd55d19
commit 668c955155
1 changed files with 14 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
fs/bcachefs/fs-io.c
View File

@ -794,41 +794,23 @@ static int quota_reserve_range(struct bch_inode_info *inode,
u64 start, u64 end)
{
struct bch_fs *c = inode->v.i_sb->s_fs_info;
struct btree_trans *trans = bch2_trans_get(c);
struct btree_iter iter;
struct bkey_s_c k;
u32 snapshot;
u64 sectors = end - start;
u64 pos = start;
int ret;
retry:
bch2_trans_begin(trans);
ret = bch2_subvolume_get_snapshot(trans, inode->ei_inum.subvol, &snapshot);
if (ret)
goto err;
bch2_trans_iter_init(trans, &iter, BTREE_ID_extents,
SPOS(inode->v.i_ino, pos, snapshot), 0);
while (!(ret = btree_trans_too_many_iters(trans)) &&
(k = bch2_btree_iter_peek_upto(&iter, POS(inode->v.i_ino, end - 1))).k &&
!(ret = bkey_err(k))) {
int ret = bch2_trans_run(c,
for_each_btree_key_in_subvolume_upto(trans, iter,
BTREE_ID_extents,
POS(inode->v.i_ino, start),
POS(inode->v.i_ino, end - 1),
inode->ei_inum.subvol, 0, k, ({
if (bkey_extent_is_allocation(k.k)) {
u64 s = min(end, k.k->p.offset) -
max(start, bkey_start_offset(k.k));
BUG_ON(s > sectors);
sectors -= s;
}
bch2_btree_iter_advance(&iter);
}
pos = iter.pos.offset;
bch2_trans_iter_exit(trans, &iter);
err:
if (bch2_err_matches(ret, BCH_ERR_transaction_restart))
goto retry;
bch2_trans_put(trans);
0;
})));
return ret ?: bch2_quota_reservation_add(c, inode, res, sectors, true);
}