#include "inode.h"
#include "io.h"
#include "reflink.h"
+#include "subvolume.h"
#include <linux/sched/signal.h>
/* reflink pointers */
-const char *bch2_reflink_p_invalid(const struct bch_fs *c, struct bkey_s_c k)
+int bch2_reflink_p_invalid(const struct bch_fs *c, struct bkey_s_c k,
+ unsigned flags, struct printbuf *err)
{
struct bkey_s_c_reflink_p p = bkey_s_c_to_reflink_p(k);
- if (bkey_val_bytes(p.k) != sizeof(*p.v))
- return "incorrect value size";
+ if (c->sb.version >= bcachefs_metadata_version_reflink_p_fix &&
+ le64_to_cpu(p.v->idx) < le32_to_cpu(p.v->front_pad)) {
+ prt_printf(err, "idx < front_pad (%llu < %u)",
+ le64_to_cpu(p.v->idx), le32_to_cpu(p.v->front_pad));
+ return -EINVAL;
+ }
- return NULL;
+ return 0;
}
void bch2_reflink_p_to_text(struct printbuf *out, struct bch_fs *c,
{
struct bkey_s_c_reflink_p p = bkey_s_c_to_reflink_p(k);
- pr_buf(out, "idx %llu", le64_to_cpu(p.v->idx));
+ prt_printf(out, "idx %llu front_pad %u back_pad %u",
+ le64_to_cpu(p.v->idx),
+ le32_to_cpu(p.v->front_pad),
+ le32_to_cpu(p.v->back_pad));
}
bool bch2_reflink_p_merge(struct bch_fs *c, struct bkey_s _l, struct bkey_s_c _r)
/* indirect extents */
-const char *bch2_reflink_v_invalid(const struct bch_fs *c, struct bkey_s_c k)
+int bch2_reflink_v_invalid(const struct bch_fs *c, struct bkey_s_c k,
+ unsigned flags, struct printbuf *err)
{
- struct bkey_s_c_reflink_v r = bkey_s_c_to_reflink_v(k);
-
- if (bkey_val_bytes(r.k) < sizeof(*r.v))
- return "incorrect value size";
-
- return bch2_bkey_ptrs_invalid(c, k);
+ return bch2_bkey_ptrs_invalid(c, k, flags, err);
}
void bch2_reflink_v_to_text(struct printbuf *out, struct bch_fs *c,
{
struct bkey_s_c_reflink_v r = bkey_s_c_to_reflink_v(k);
- pr_buf(out, "refcount: %llu ", le64_to_cpu(r.v->refcount));
+ prt_printf(out, "refcount: %llu ", le64_to_cpu(r.v->refcount));
bch2_bkey_ptrs_to_text(out, c, k);
}
return l.v->refcount == r.v->refcount && bch2_extent_merge(c, _l, _r);
}
+int bch2_trans_mark_reflink_v(struct btree_trans *trans,
+ enum btree_id btree_id, unsigned level,
+ struct bkey_s_c old, struct bkey_i *new,
+ unsigned flags)
+{
+ if (!(flags & BTREE_TRIGGER_OVERWRITE)) {
+ struct bkey_i_reflink_v *r = bkey_i_to_reflink_v(new);
+
+ if (!r->v.refcount) {
+ r->k.type = KEY_TYPE_deleted;
+ r->k.size = 0;
+ set_bkey_val_u64s(&r->k, 0);
+ return 0;
+ }
+ }
+
+ return bch2_trans_mark_extent(trans, btree_id, level, old, new, flags);
+}
+
/* indirect inline data */
-const char *bch2_indirect_inline_data_invalid(const struct bch_fs *c,
- struct bkey_s_c k)
+int bch2_indirect_inline_data_invalid(const struct bch_fs *c, struct bkey_s_c k,
+ unsigned flags, struct printbuf *err)
{
- if (bkey_val_bytes(k.k) < sizeof(struct bch_indirect_inline_data))
- return "incorrect value size";
- return NULL;
+ return 0;
}
void bch2_indirect_inline_data_to_text(struct printbuf *out,
struct bkey_s_c_indirect_inline_data d = bkey_s_c_to_indirect_inline_data(k);
unsigned datalen = bkey_inline_data_bytes(k.k);
- pr_buf(out, "refcount %llu datalen %u: %*phN",
+ prt_printf(out, "refcount %llu datalen %u: %*phN",
le64_to_cpu(d.v->refcount), datalen,
min(datalen, 32U), d.v->data);
}
+int bch2_trans_mark_indirect_inline_data(struct btree_trans *trans,
+ enum btree_id btree_id, unsigned level,
+ struct bkey_s_c old, struct bkey_i *new,
+ unsigned flags)
+{
+ if (!(flags & BTREE_TRIGGER_OVERWRITE)) {
+ struct bkey_i_indirect_inline_data *r =
+ bkey_i_to_indirect_inline_data(new);
+
+ if (!r->v.refcount) {
+ r->k.type = KEY_TYPE_deleted;
+ r->k.size = 0;
+ set_bkey_val_u64s(&r->k, 0);
+ }
+ }
+
+ return 0;
+}
+
static int bch2_make_extent_indirect(struct btree_trans *trans,
struct btree_iter *extent_iter,
struct bkey_i *orig)
if (orig->k.type == KEY_TYPE_inline_data)
bch2_check_set_feature(c, BCH_FEATURE_reflink_inline_data);
- for_each_btree_key(trans, reflink_iter, BTREE_ID_reflink,
+ for_each_btree_key_norestart(trans, reflink_iter, BTREE_ID_reflink,
POS(0, c->reflink_hint),
- BTREE_ITER_INTENT|BTREE_ITER_SLOTS, k, ret) {
+ BTREE_ITER_SLOTS, k, ret) {
if (reflink_iter.pos.inode) {
bch2_btree_iter_set_pos(&reflink_iter, POS_MIN);
continue;
if (ret)
goto err;
+ /*
+ * orig is in a bkey_buf which statically allocates 5 64s for the val,
+ * so we know it will be big enough:
+ */
orig->k.type = KEY_TYPE_reflink_p;
r_p = bkey_i_to_reflink_p(orig);
set_bkey_val_bytes(&r_p->k, sizeof(r_p->v));
+
+ /* FORTIFY_SOURCE is broken here, and doesn't provide unsafe_memset() */
+#if !defined(__NO_FORTIFY) && defined(__OPTIMIZE__) && defined(CONFIG_FORTIFY_SOURCE)
+ __underlying_memset(&r_p->v, 0, sizeof(r_p->v));
+#else
+ memset(&r_p->v, 0, sizeof(r_p->v));
+#endif
+
r_p->v.idx = cpu_to_le64(bkey_start_offset(&r_v->k));
- ret = bch2_trans_update(trans, extent_iter, &r_p->k_i, 0);
+ ret = bch2_trans_update(trans, extent_iter, &r_p->k_i,
+ BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE);
err:
c->reflink_hint = reflink_iter.pos.offset;
bch2_trans_iter_exit(trans, &reflink_iter);
struct bkey_s_c k;
int ret;
- for_each_btree_key_continue(*iter, 0, k, ret) {
- if (bkey_cmp(iter->pos, end) >= 0)
- break;
+ for_each_btree_key_upto_continue_norestart(*iter, end, 0, k, ret) {
+ if (bkey_extent_is_unwritten(k))
+ continue;
if (bkey_extent_is_data(k.k))
return k;
}
- if (bkey_cmp(iter->pos, end) >= 0)
+ if (bkey_ge(iter->pos, end))
bch2_btree_iter_set_pos(iter, end);
return ret ? bkey_s_c_err(ret) : bkey_s_c_null;
}
s64 bch2_remap_range(struct bch_fs *c,
- struct bpos dst_start, struct bpos src_start,
- u64 remap_sectors, u64 *journal_seq,
+ subvol_inum dst_inum, u64 dst_offset,
+ subvol_inum src_inum, u64 src_offset,
+ u64 remap_sectors,
u64 new_i_size, s64 *i_sectors_delta)
{
struct btree_trans trans;
struct btree_iter dst_iter, src_iter;
struct bkey_s_c src_k;
struct bkey_buf new_dst, new_src;
+ struct bpos dst_start = POS(dst_inum.inum, dst_offset);
+ struct bpos src_start = POS(src_inum.inum, src_offset);
struct bpos dst_end = dst_start, src_end = src_start;
struct bpos src_want;
u64 dst_done;
+ u32 dst_snapshot, src_snapshot;
int ret = 0, ret2 = 0;
- if (!percpu_ref_tryget(&c->writes))
- return -EROFS;
+ if (!bch2_write_ref_tryget(c, BCH_WRITE_REF_reflink))
+ return -BCH_ERR_erofs_no_writes;
bch2_check_set_feature(c, BCH_FEATURE_reflink);
bch2_trans_iter_init(&trans, &dst_iter, BTREE_ID_extents, dst_start,
BTREE_ITER_INTENT);
- while ((ret == 0 || ret == -EINTR) &&
- bkey_cmp(dst_iter.pos, dst_end) < 0) {
+ while ((ret == 0 ||
+ bch2_err_matches(ret, BCH_ERR_transaction_restart)) &&
+ bkey_lt(dst_iter.pos, dst_end)) {
struct disk_reservation disk_res = { 0 };
bch2_trans_begin(&trans);
break;
}
+ ret = bch2_subvolume_get_snapshot(&trans, src_inum.subvol,
+ &src_snapshot);
+ if (ret)
+ continue;
+
+ bch2_btree_iter_set_snapshot(&src_iter, src_snapshot);
+
+ ret = bch2_subvolume_get_snapshot(&trans, dst_inum.subvol,
+ &dst_snapshot);
+ if (ret)
+ continue;
+
+ bch2_btree_iter_set_snapshot(&dst_iter, dst_snapshot);
+
dst_done = dst_iter.pos.offset - dst_start.offset;
src_want = POS(src_start.inode, src_start.offset + dst_done);
bch2_btree_iter_set_pos(&src_iter, src_want);
if (ret)
continue;
- if (bkey_cmp(src_want, src_iter.pos) < 0) {
- ret = bch2_fpunch_at(&trans, &dst_iter,
- bpos_min(dst_end,
- POS(dst_iter.pos.inode, dst_iter.pos.offset +
- src_iter.pos.offset - src_want.offset)),
- journal_seq, i_sectors_delta);
+ if (bkey_lt(src_want, src_iter.pos)) {
+ ret = bch2_fpunch_at(&trans, &dst_iter, dst_inum,
+ min(dst_end.offset,
+ dst_iter.pos.offset +
+ src_iter.pos.offset - src_want.offset),
+ i_sectors_delta);
continue;
}
bch2_key_resize(&new_dst.k->k,
min(src_k.k->p.offset - src_want.offset,
dst_end.offset - dst_iter.pos.offset));
- ret = bch2_extent_update(&trans, &dst_iter, new_dst.k,
- &disk_res, journal_seq,
+
+ ret = bch2_extent_update(&trans, dst_inum, &dst_iter,
+ new_dst.k, &disk_res,
new_i_size, i_sectors_delta,
true);
bch2_disk_reservation_put(c, &disk_res);
bch2_trans_iter_exit(&trans, &dst_iter);
bch2_trans_iter_exit(&trans, &src_iter);
- BUG_ON(!ret && bkey_cmp(dst_iter.pos, dst_end));
- BUG_ON(bkey_cmp(dst_iter.pos, dst_end) > 0);
+ BUG_ON(!ret && !bkey_eq(dst_iter.pos, dst_end));
+ BUG_ON(bkey_gt(dst_iter.pos, dst_end));
dst_done = dst_iter.pos.offset - dst_start.offset;
new_i_size = min(dst_iter.pos.offset << 9, new_i_size);
bch2_trans_begin(&trans);
ret2 = bch2_inode_peek(&trans, &inode_iter, &inode_u,
- dst_start.inode, BTREE_ITER_INTENT);
+ dst_inum, BTREE_ITER_INTENT);
if (!ret2 &&
inode_u.bi_size < new_i_size) {
inode_u.bi_size = new_i_size;
ret2 = bch2_inode_write(&trans, &inode_iter, &inode_u) ?:
- bch2_trans_commit(&trans, NULL, journal_seq, 0);
+ bch2_trans_commit(&trans, NULL, NULL,
+ BTREE_INSERT_NOFAIL);
}
bch2_trans_iter_exit(&trans, &inode_iter);
- } while (ret2 == -EINTR);
+ } while (bch2_err_matches(ret2, BCH_ERR_transaction_restart));
- ret = bch2_trans_exit(&trans) ?: ret;
+ bch2_trans_exit(&trans);
bch2_bkey_buf_exit(&new_src, c);
bch2_bkey_buf_exit(&new_dst, c);
- percpu_ref_put(&c->writes);
+ bch2_write_ref_put(c, BCH_WRITE_REF_reflink);
return dst_done ?: ret ?: ret2;
}
projects / bcachefs-tools-debian / blobdiff