}
}
-static void bchfs_read(struct btree_trans *trans, struct btree_iter *iter,
- struct bch_read_bio *rbio, u64 inum,
+static void bchfs_read(struct btree_trans *trans,
+ struct bch_read_bio *rbio,
+ subvol_inum inum,
struct readpages_iter *readpages_iter)
{
struct bch_fs *c = trans->c;
+ struct btree_iter iter;
struct bkey_buf sk;
int flags = BCH_READ_RETRY_IF_STALE|
BCH_READ_MAY_PROMOTE;
+ u32 snapshot;
int ret = 0;
rbio->c = c;
rbio->start_time = local_clock();
+ rbio->subvol = inum.subvol;
bch2_bkey_buf_init(&sk);
retry:
bch2_trans_begin(trans);
+ iter = (struct btree_iter) { NULL };
+ ret = bch2_subvolume_get_snapshot(trans, inum.subvol, &snapshot);
+ if (ret)
+ goto err;
+
+ bch2_trans_iter_init(trans, &iter, BTREE_ID_extents,
+ SPOS(inum.inum, rbio->bio.bi_iter.bi_sector, snapshot),
+ BTREE_ITER_SLOTS|BTREE_ITER_FILTER_SNAPSHOTS);
while (1) {
struct bkey_s_c k;
unsigned bytes, sectors, offset_into_extent;
enum btree_id data_btree = BTREE_ID_extents;
- bch2_btree_iter_set_pos(iter,
- POS(inum, rbio->bio.bi_iter.bi_sector));
+ /*
+ * read_extent -> io_time_reset may cause a transaction restart
+ * without returning an error, we need to check for that here:
+ */
+ if (!bch2_trans_relock(trans)) {
+ ret = -EINTR;
+ break;
+ }
+
+ bch2_btree_iter_set_pos(&iter,
+ POS(inum.inum, rbio->bio.bi_iter.bi_sector));
- k = bch2_btree_iter_peek_slot(iter);
+ k = bch2_btree_iter_peek_slot(&iter);
ret = bkey_err(k);
if (ret)
break;
- offset_into_extent = iter->pos.offset -
+ offset_into_extent = iter.pos.offset -
bkey_start_offset(k.k);
sectors = k.k->size - offset_into_extent;
if (bkey_extent_is_allocation(k.k))
bch2_add_page_sectors(&rbio->bio, k);
- bch2_read_extent(trans, rbio, iter->pos,
+ bch2_read_extent(trans, rbio, iter.pos,
data_btree, k, offset_into_extent, flags);
if (flags & BCH_READ_LAST_FRAGMENT)
swap(rbio->bio.bi_iter.bi_size, bytes);
bio_advance(&rbio->bio, bytes);
}
+err:
+ bch2_trans_iter_exit(trans, &iter);
if (ret == -EINTR)
goto retry;
if (ret) {
- bch_err_inum_ratelimited(c, inum,
+ bch_err_inum_ratelimited(c, inum.inum,
"read error %i from btree lookup", ret);
rbio->bio.bi_status = BLK_STS_IOERR;
bio_endio(&rbio->bio);
struct bch_fs *c = inode->v.i_sb->s_fs_info;
struct bch_io_opts opts = io_opts(c, &inode->ei_inode);
struct btree_trans trans;
- struct btree_iter *iter;
struct page *page;
struct readpages_iter readpages_iter;
int ret;
BUG_ON(ret);
bch2_trans_init(&trans, c, 0, 0);
- iter = bch2_trans_get_iter(&trans, BTREE_ID_extents, POS_MIN,
- BTREE_ITER_SLOTS);
bch2_pagecache_add_get(&inode->ei_pagecache_lock);
rbio->bio.bi_end_io = bch2_readpages_end_io;
BUG_ON(!bio_add_page(&rbio->bio, page, PAGE_SIZE, 0));
- bchfs_read(&trans, iter, rbio, inode->v.i_ino,
+ bchfs_read(&trans, rbio, inode_inum(inode),
&readpages_iter);
}
bch2_pagecache_add_put(&inode->ei_pagecache_lock);
- bch2_trans_iter_put(&trans, iter);
bch2_trans_exit(&trans);
kfree(readpages_iter.pages);
}
static void __bchfs_readpage(struct bch_fs *c, struct bch_read_bio *rbio,
- u64 inum, struct page *page)
+ subvol_inum inum, struct page *page)
{
struct btree_trans trans;
- struct btree_iter *iter;
bch2_page_state_create(page, __GFP_NOFAIL);
BUG_ON(!bio_add_page(&rbio->bio, page, PAGE_SIZE, 0));
bch2_trans_init(&trans, c, 0, 0);
- iter = bch2_trans_get_iter(&trans, BTREE_ID_extents, POS_MIN,
- BTREE_ITER_SLOTS);
-
- bchfs_read(&trans, iter, rbio, inum, NULL);
-
- bch2_trans_iter_put(&trans, iter);
+ bchfs_read(&trans, rbio, inum, NULL);
bch2_trans_exit(&trans);
}
rbio = rbio_init(bio_alloc_bioset(GFP_NOFS, 1, &c->bio_read), opts);
rbio->bio.bi_end_io = bch2_readpages_end_io;
- __bchfs_readpage(c, rbio, inode->v.i_ino, page);
+ __bchfs_readpage(c, rbio, inode_inum(inode), page);
return 0;
}
rbio->bio.bi_private = &done;
rbio->bio.bi_end_io = bch2_read_single_page_end_io;
- __bchfs_readpage(c, rbio, inode->v.i_ino, page);
+ __bchfs_readpage(c, rbio, inode_inum(inode), page);
wait_for_completion(&done);
ret = blk_status_to_errno(rbio->bio.bi_status);
op->nr_replicas = nr_replicas;
op->res.nr_replicas = nr_replicas;
op->write_point = writepoint_hashed(inode->ei_last_dirtied);
+ op->subvol = inode->ei_subvol;
op->pos = POS(inode->v.i_ino, sector);
op->wbio.bio.bi_iter.bi_sector = sector;
op->wbio.bio.bi_opf = wbc_to_write_flags(wbc);
if (iter->count)
closure_get(&dio->cl);
- bch2_read(c, rbio_init(bio, opts), inode->v.i_ino);
+ bch2_read(c, rbio_init(bio, opts), inode_inum(inode));
}
iter->count += shorten;
/* O_DIRECT writes */
+static bool bch2_check_range_allocated(struct bch_fs *c, subvol_inum inum,
+ u64 offset, u64 size,
+ unsigned nr_replicas, bool compressed)
+{
+ struct btree_trans trans;
+ struct btree_iter iter;
+ struct bkey_s_c k;
+ u64 end = offset + size;
+ u32 snapshot;
+ bool ret = true;
+ int err;
+
+ bch2_trans_init(&trans, c, 0, 0);
+retry:
+ bch2_trans_begin(&trans);
+
+ err = bch2_subvolume_get_snapshot(&trans, inum.subvol, &snapshot);
+ if (err)
+ goto err;
+
+ for_each_btree_key(&trans, iter, BTREE_ID_extents,
+ SPOS(inum.inum, offset, snapshot),
+ BTREE_ITER_SLOTS, k, err) {
+ if (bkey_cmp(bkey_start_pos(k.k), POS(inum.inum, end)) >= 0)
+ break;
+
+ if (k.k->p.snapshot != snapshot ||
+ nr_replicas > bch2_bkey_replicas(c, k) ||
+ (!compressed && bch2_bkey_sectors_compressed(k))) {
+ ret = false;
+ break;
+ }
+ }
+
+ offset = iter.pos.offset;
+ bch2_trans_iter_exit(&trans, &iter);
+err:
+ if (err == -EINTR)
+ goto retry;
+ bch2_trans_exit(&trans);
+
+ return err ? false : ret;
+}
+
static void bch2_dio_write_loop_async(struct bch_write_op *);
static long bch2_dio_write_loop(struct dio_write *dio)
op_journal_seq_set(&dio->op, &inode->ei_journal_seq);
dio->op.write_point = writepoint_hashed((unsigned long) current);
dio->op.nr_replicas = dio->op.opts.data_replicas;
+ dio->op.subvol = inode->ei_subvol;
dio->op.pos = POS(inode->v.i_ino, (u64) req->ki_pos >> 9);
if ((req->ki_flags & IOCB_DSYNC) &&
ret = bch2_disk_reservation_get(c, &dio->op.res, bio_sectors(bio),
dio->op.opts.data_replicas, 0);
if (unlikely(ret) &&
- !bch2_check_range_allocated(c, dio->op.pos,
- bio_sectors(bio),
+ !bch2_check_range_allocated(c, inode_inum(inode),
+ dio->op.pos.offset, bio_sectors(bio),
dio->op.opts.data_replicas,
dio->op.opts.compression != 0))
goto err;
/* truncate: */
-static inline int range_has_data(struct bch_fs *c,
- struct bpos start,
- struct bpos end)
+static inline int range_has_data(struct bch_fs *c, u32 subvol,
+ struct bpos start,
+ struct bpos end)
{
struct btree_trans trans;
- struct btree_iter *iter;
+ struct btree_iter iter;
struct bkey_s_c k;
int ret = 0;
bch2_trans_init(&trans, c, 0, 0);
+retry:
+ bch2_trans_begin(&trans);
+
+ ret = bch2_subvolume_get_snapshot(&trans, subvol, &start.snapshot);
+ if (ret)
+ goto err;
for_each_btree_key(&trans, iter, BTREE_ID_extents, start, 0, k, ret) {
if (bkey_cmp(bkey_start_pos(k.k), end) >= 0)
break;
}
}
- bch2_trans_iter_put(&trans, iter);
+ start = iter.pos;
+ bch2_trans_iter_exit(&trans, &iter);
+err:
+ if (ret == -EINTR)
+ goto retry;
return bch2_trans_exit(&trans) ?: ret;
}
* XXX: we're doing two index lookups when we end up reading the
* page
*/
- ret = range_has_data(c,
+ ret = range_has_data(c, inode->ei_subvol,
POS(inode->v.i_ino, index << PAGE_SECTOR_SHIFT),
POS(inode->v.i_ino, (index + 1) << PAGE_SECTOR_SHIFT));
if (ret <= 0)
inode_dio_wait(&inode->v);
bch2_pagecache_block_get(&inode->ei_pagecache_lock);
- ret = bch2_inode_find_by_inum(c, inode->v.i_ino, &inode_u);
+ ret = bch2_inode_find_by_inum(c, inode_inum(inode), &inode_u);
if (ret)
goto err;
truncate_setsize(&inode->v, iattr->ia_size);
- ret = bch2_fpunch(c, inode->v.i_ino,
+ ret = bch2_fpunch(c, inode_inum(inode),
round_up(iattr->ia_size, block_bytes(c)) >> 9,
U64_MAX, &inode->ei_journal_seq, &i_sectors_delta);
i_sectors_acct(c, inode, NULL, i_sectors_delta);
if (discard_start < discard_end) {
s64 i_sectors_delta = 0;
- ret = bch2_fpunch(c, inode->v.i_ino,
+ ret = bch2_fpunch(c, inode_inum(inode),
discard_start, discard_end,
&inode->ei_journal_seq,
&i_sectors_delta);
struct address_space *mapping = inode->v.i_mapping;
struct bkey_buf copy;
struct btree_trans trans;
- struct btree_iter *src, *dst, *del;
+ struct btree_iter src, dst, del;
loff_t shift, new_size;
u64 src_start;
int ret = 0;
} else {
s64 i_sectors_delta = 0;
- ret = bch2_fpunch(c, inode->v.i_ino,
+ ret = bch2_fpunch(c, inode_inum(inode),
offset >> 9, (offset + len) >> 9,
&inode->ei_journal_seq,
&i_sectors_delta);
bch2_bkey_buf_init(©);
bch2_trans_init(&trans, c, BTREE_ITER_MAX, 1024);
- src = bch2_trans_get_iter(&trans, BTREE_ID_extents,
+ bch2_trans_iter_init(&trans, &src, BTREE_ID_extents,
POS(inode->v.i_ino, src_start >> 9),
BTREE_ITER_INTENT);
- dst = bch2_trans_copy_iter(&trans, src);
- del = bch2_trans_copy_iter(&trans, src);
+ bch2_trans_copy_iter(&dst, &src);
+ bch2_trans_copy_iter(&del, &src);
while (ret == 0 || ret == -EINTR) {
struct disk_reservation disk_res =
struct bpos move_pos = POS(inode->v.i_ino, offset >> 9);
struct bpos atomic_end;
unsigned trigger_flags = 0;
+ u32 snapshot;
+
+ bch2_trans_begin(&trans);
+
+ ret = bch2_subvolume_get_snapshot(&trans,
+ inode->ei_subvol, &snapshot);
+ if (ret)
+ continue;
+
+ bch2_btree_iter_set_snapshot(&src, snapshot);
+ bch2_btree_iter_set_snapshot(&dst, snapshot);
+ bch2_btree_iter_set_snapshot(&del, snapshot);
bch2_trans_begin(&trans);
k = insert
- ? bch2_btree_iter_peek_prev(src)
- : bch2_btree_iter_peek(src);
+ ? bch2_btree_iter_peek_prev(&src)
+ : bch2_btree_iter_peek(&src);
if ((ret = bkey_err(k)))
continue;
bch2_cut_front(move_pos, copy.k);
copy.k->k.p.offset += shift >> 9;
- bch2_btree_iter_set_pos(dst, bkey_start_pos(©.k->k));
+ bch2_btree_iter_set_pos(&dst, bkey_start_pos(©.k->k));
- ret = bch2_extent_atomic_end(dst, copy.k, &atomic_end);
+ ret = bch2_extent_atomic_end(&trans, &dst, copy.k, &atomic_end);
if (ret)
continue;
delete.k.p = copy.k->k.p;
delete.k.size = copy.k->k.size;
delete.k.p.offset -= shift >> 9;
- bch2_btree_iter_set_pos(del, bkey_start_pos(&delete.k));
+ bch2_btree_iter_set_pos(&del, bkey_start_pos(&delete.k));
next_pos = insert ? bkey_start_pos(&delete.k) : delete.k.p;
BUG_ON(ret);
}
- ret = bch2_btree_iter_traverse(del) ?:
- bch2_trans_update(&trans, del, &delete, trigger_flags) ?:
- bch2_trans_update(&trans, dst, copy.k, trigger_flags) ?:
+ ret = bch2_btree_iter_traverse(&del) ?:
+ bch2_trans_update(&trans, &del, &delete, trigger_flags) ?:
+ bch2_trans_update(&trans, &dst, copy.k, trigger_flags) ?:
bch2_trans_commit(&trans, &disk_res,
&inode->ei_journal_seq,
BTREE_INSERT_NOFAIL);
bch2_disk_reservation_put(c, &disk_res);
if (!ret)
- bch2_btree_iter_set_pos(src, next_pos);
+ bch2_btree_iter_set_pos(&src, next_pos);
}
- bch2_trans_iter_put(&trans, del);
- bch2_trans_iter_put(&trans, dst);
- bch2_trans_iter_put(&trans, src);
+ bch2_trans_iter_exit(&trans, &del);
+ bch2_trans_iter_exit(&trans, &dst);
+ bch2_trans_iter_exit(&trans, &src);
bch2_trans_exit(&trans);
bch2_bkey_buf_exit(©, c);
{
struct bch_fs *c = inode->v.i_sb->s_fs_info;
struct btree_trans trans;
- struct btree_iter *iter;
+ struct btree_iter iter;
struct bpos end_pos = POS(inode->v.i_ino, end_sector);
unsigned replicas = io_opts(c, &inode->ei_inode).data_replicas;
int ret = 0;
bch2_trans_init(&trans, c, BTREE_ITER_MAX, 512);
- iter = bch2_trans_get_iter(&trans, BTREE_ID_extents,
+ bch2_trans_iter_init(&trans, &iter, BTREE_ID_extents,
POS(inode->v.i_ino, start_sector),
BTREE_ITER_SLOTS|BTREE_ITER_INTENT);
- while (!ret && bkey_cmp(iter->pos, end_pos) < 0) {
+ while (!ret && bkey_cmp(iter.pos, end_pos) < 0) {
s64 i_sectors_delta = 0;
struct disk_reservation disk_res = { 0 };
struct quota_res quota_res = { 0 };
struct bkey_i_reservation reservation;
struct bkey_s_c k;
unsigned sectors;
+ u32 snapshot;
bch2_trans_begin(&trans);
- k = bch2_btree_iter_peek_slot(iter);
+ ret = bch2_subvolume_get_snapshot(&trans,
+ inode->ei_subvol, &snapshot);
+ if (ret)
+ goto bkey_err;
+
+ bch2_btree_iter_set_snapshot(&iter, snapshot);
+
+ k = bch2_btree_iter_peek_slot(&iter);
if ((ret = bkey_err(k)))
goto bkey_err;
/* already reserved */
if (k.k->type == KEY_TYPE_reservation &&
bkey_s_c_to_reservation(k).v->nr_replicas >= replicas) {
- bch2_btree_iter_advance(iter);
+ bch2_btree_iter_advance(&iter);
continue;
}
if (bkey_extent_is_data(k.k) &&
!(mode & FALLOC_FL_ZERO_RANGE)) {
- bch2_btree_iter_advance(iter);
+ bch2_btree_iter_advance(&iter);
continue;
}
reservation.k.p = k.k->p;
reservation.k.size = k.k->size;
- bch2_cut_front(iter->pos, &reservation.k_i);
+ bch2_cut_front(iter.pos, &reservation.k_i);
bch2_cut_back(end_pos, &reservation.k_i);
sectors = reservation.k.size;
reservation.v.nr_replicas = disk_res.nr_replicas;
}
- ret = bch2_extent_update(&trans, iter, &reservation.k_i,
+ ret = bch2_extent_update(&trans, inode_inum(inode), &iter,
+ &reservation.k_i,
&disk_res, &inode->ei_journal_seq,
0, &i_sectors_delta, true);
i_sectors_acct(c, inode, "a_res, i_sectors_delta);
if (ret == -EINTR)
ret = 0;
}
- bch2_trans_iter_put(&trans, iter);
+ bch2_trans_iter_exit(&trans, &iter);
bch2_trans_exit(&trans);
return ret;
}
mark_range_unallocated(src, pos_src, pos_src + aligned_len);
ret = bch2_remap_range(c,
- POS(dst->v.i_ino, pos_dst >> 9),
- POS(src->v.i_ino, pos_src >> 9),
+ inode_inum(dst), pos_dst >> 9,
+ inode_inum(src), pos_src >> 9,
aligned_len >> 9,
&dst->ei_journal_seq,
pos_dst + len, &i_sectors_delta);
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 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);
return -ENXIO;
bch2_trans_init(&trans, c, 0, 0);
+retry:
+ bch2_trans_begin(&trans);
+
+ ret = bch2_subvolume_get_snapshot(&trans, inum.subvol, &snapshot);
+ if (ret)
+ goto err;
for_each_btree_key(&trans, iter, BTREE_ID_extents,
- POS(inode->v.i_ino, offset >> 9), 0, k, ret) {
+ SPOS(inode->v.i_ino, offset >> 9, snapshot), 0, k, ret) {
if (k.k->p.inode != inode->v.i_ino) {
break;
} else if (bkey_extent_is_data(k.k)) {
} else if (k.k->p.offset >> 9 > isize)
break;
}
- bch2_trans_iter_put(&trans, iter);
+ bch2_trans_iter_exit(&trans, &iter);
+err:
+ if (ret == -EINTR)
+ goto retry;
ret = bch2_trans_exit(&trans) ?: ret;
if (ret)
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 btree_iter iter;
struct bkey_s_c k;
+ subvol_inum inum = inode_inum(inode);
u64 isize, next_hole = MAX_LFS_FILESIZE;
+ u32 snapshot;
int ret;
isize = i_size_read(&inode->v);
return -ENXIO;
bch2_trans_init(&trans, c, 0, 0);
+retry:
+ bch2_trans_begin(&trans);
+
+ ret = bch2_subvolume_get_snapshot(&trans, inum.subvol, &snapshot);
+ if (ret)
+ goto err;
for_each_btree_key(&trans, iter, BTREE_ID_extents,
- POS(inode->v.i_ino, offset >> 9),
+ SPOS(inode->v.i_ino, offset >> 9, snapshot),
BTREE_ITER_SLOTS, k, ret) {
if (k.k->p.inode != inode->v.i_ino) {
next_hole = bch2_seek_pagecache_hole(&inode->v,
offset = max(offset, bkey_start_offset(k.k) << 9);
}
}
- bch2_trans_iter_put(&trans, iter);
+ bch2_trans_iter_exit(&trans, &iter);
+err:
+ if (ret == -EINTR)
+ goto retry;
ret = bch2_trans_exit(&trans) ?: ret;
if (ret)
projects / bcachefs-tools-debian / blobdiff