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bcachefs: bch2_xattr_list() -> 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 13:24:28 -04:00
parent efdb77a25b
commit 3da106cd1b
1 changed files with 12 additions and 43 deletions
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55
fs/bcachefs/xattr.c
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@@ -295,54 +295,23 @@ ssize_t bch2_xattr_list(struct dentry *dentry, char *buffer, size_t buffer_size)
{
struct bch_fs *c = dentry->d_sb->s_fs_info;
struct bch_inode_info *inode = to_bch_ei(dentry->d_inode);
struct btree_trans *trans = bch2_trans_get(c);
struct btree_iter iter;
struct bkey_s_c k;
struct xattr_buf buf = { .buf = buffer, .len = buffer_size };
u64 offset = 0, inum = inode->ei_inode.bi_inum;
u32 snapshot;
int ret;
retry:
bch2_trans_begin(trans);
iter = (struct btree_iter) { NULL };
ret = bch2_subvolume_get_snapshot(trans, inode->ei_inum.subvol, &snapshot);
if (ret)
goto err;
int ret = bch2_trans_run(c,
for_each_btree_key_in_subvolume_upto(trans, iter, BTREE_ID_xattrs,
POS(inum, offset),
POS(inum, U64_MAX),
inode->ei_inum.subvol, 0, k, ({
if (k.k->type != KEY_TYPE_xattr)
continue;
for_each_btree_key_upto_norestart(trans, iter, BTREE_ID_xattrs,
SPOS(inum, offset, snapshot),
POS(inum, U64_MAX), 0, k, ret) {
if (k.k->type != KEY_TYPE_xattr)
continue;
bch2_xattr_emit(dentry, bkey_s_c_to_xattr(k).v, &buf);
}))) ?:
bch2_xattr_list_bcachefs(c, &inode->ei_inode, &buf, false) ?:
bch2_xattr_list_bcachefs(c, &inode->ei_inode, &buf, true);
ret = bch2_xattr_emit(dentry, bkey_s_c_to_xattr(k).v, &buf);
if (ret)
break;
}
offset = 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);
if (ret)
goto out;
ret = bch2_xattr_list_bcachefs(c, &inode->ei_inode, &buf, false);
if (ret)
goto out;
ret = bch2_xattr_list_bcachefs(c, &inode->ei_inode, &buf, true);
if (ret)
goto out;
return buf.used;
out:
return bch2_err_class(ret);
return ret ? bch2_err_class(ret) : buf.used;
}
static int bch2_xattr_get_handler(const struct xattr_handler *handler,