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bcachefs: bch2_seek_data() -> for_each_btree_key_in_subvolume_upto

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-07-17 13:26:54 -04:00
parent 3da106cd1b
commit 9f9e7f50af
1 changed files with 12 additions and 29 deletions
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29
fs/bcachefs/fs-io.c
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@ -942,42 +942,25 @@ static loff_t bch2_seek_data(struct file *file, u64 offset)
{
struct bch_inode_info *inode = file_bch_inode(file);
struct bch_fs *c = inode->v.i_sb->s_fs_info;
struct btree_trans *trans;
struct btree_iter iter;
struct bkey_s_c k;
subvol_inum inum = inode_inum(inode);
u64 isize, next_data = MAX_LFS_FILESIZE;
u32 snapshot;
int ret;
isize = i_size_read(&inode->v);
if (offset >= isize)
return -ENXIO;
trans = bch2_trans_get(c);
retry:
bch2_trans_begin(trans);
ret = bch2_subvolume_get_snapshot(trans, inum.subvol, &snapshot);
if (ret)
goto err;
for_each_btree_key_upto_norestart(trans, iter, BTREE_ID_extents,
SPOS(inode->v.i_ino, offset >> 9, snapshot),
int ret = bch2_trans_run(c,
for_each_btree_key_in_subvolume_upto(trans, iter, BTREE_ID_extents,
POS(inode->v.i_ino, offset >> 9),
POS(inode->v.i_ino, U64_MAX),
0, k, ret) {
inum.subvol, 0, k, ({
if (bkey_extent_is_data(k.k)) {
next_data = max(offset, bkey_start_offset(k.k) << 9);
break;
} else if (k.k->p.offset >> 9 > isize)
break;
}
bch2_trans_iter_exit(trans, &iter);
err:
if (bch2_err_matches(ret, BCH_ERR_transaction_restart))
goto retry;
bch2_trans_put(trans);
0;
})));
if (ret)
return ret;