u64 sectors;
};
-struct bchfs_write_op {
- struct bch_inode_info *inode;
- s64 sectors_added;
- bool is_dio;
- bool unalloc;
- u64 new_i_size;
-
- /* must be last: */
- struct bch_write_op op;
-};
-
struct bch_writepage_io {
struct closure cl;
- u64 new_sectors;
+ struct bch_inode_info *inode;
/* must be last: */
- struct bchfs_write_op op;
+ struct bch_write_op op;
};
struct dio_write {
struct iovec inline_vecs[2];
/* must be last: */
- struct bchfs_write_op iop;
+ struct bch_write_op op;
};
struct dio_read {
mutex_unlock(&inode->ei_quota_lock);
}
-/* normal i_size/i_sectors update machinery: */
-
-static int sum_sector_overwrites(struct btree_trans *trans,
- struct btree_iter *extent_iter,
- struct bkey_i *new,
- bool may_allocate,
- s64 *delta)
-{
- struct btree_iter *iter;
- struct bkey_s_c old;
- int ret = 0;
-
- *delta = 0;
-
- iter = bch2_trans_copy_iter(trans, extent_iter);
- if (IS_ERR(iter))
- return PTR_ERR(iter);
-
- for_each_btree_key_continue(iter, BTREE_ITER_SLOTS, old, ret) {
- if (!may_allocate &&
- bch2_bkey_nr_ptrs_allocated(old) <
- bch2_bkey_nr_dirty_ptrs(bkey_i_to_s_c(new))) {
- ret = -ENOSPC;
- break;
- }
-
- *delta += (min(new->k.p.offset,
- old.k->p.offset) -
- max(bkey_start_offset(&new->k),
- bkey_start_offset(old.k))) *
- (bkey_extent_is_allocation(&new->k) -
- bkey_extent_is_allocation(old.k));
-
- if (bkey_cmp(old.k->p, new->k.p) >= 0)
- break;
- }
-
- bch2_trans_iter_put(trans, iter);
- return ret;
-}
-
-int bch2_extent_update(struct btree_trans *trans,
- struct bch_inode_info *inode,
- struct disk_reservation *disk_res,
- struct quota_res *quota_res,
- struct btree_iter *extent_iter,
- struct bkey_i *k,
- u64 new_i_size,
- bool may_allocate,
- bool direct,
- s64 *total_delta)
-{
- struct bch_fs *c = trans->c;
- struct btree_iter *inode_iter = NULL;
- struct bch_inode_unpacked inode_u;
- struct bkey_inode_buf inode_p;
- bool extended = false;
- s64 i_sectors_delta;
- int ret;
-
- ret = bch2_btree_iter_traverse(extent_iter);
- if (ret)
- return ret;
-
- ret = bch2_extent_trim_atomic(k, extent_iter);
- if (ret)
- return ret;
-
- ret = sum_sector_overwrites(trans, extent_iter, k,
- may_allocate, &i_sectors_delta);
- if (ret)
- return ret;
-
- bch2_trans_update(trans, extent_iter, k);
-
- new_i_size = min(k->k.p.offset << 9, new_i_size);
-
- /* XXX: inode->i_size locking */
- if (i_sectors_delta ||
- new_i_size > inode->ei_inode.bi_size) {
- inode_iter = bch2_inode_peek(trans, &inode_u,
- k->k.p.inode, BTREE_ITER_INTENT);
- if (IS_ERR(inode_iter))
- return PTR_ERR(inode_iter);
-
- inode_u.bi_sectors += i_sectors_delta;
-
- /*
- * XXX: can BCH_INODE_I_SIZE_DIRTY be true here? i.e. can we
- * race with truncate?
- */
- if (!(inode_u.bi_flags & BCH_INODE_I_SIZE_DIRTY) &&
- new_i_size > inode_u.bi_size) {
- inode_u.bi_size = new_i_size;
- extended = true;
- }
-
- if (i_sectors_delta || extended) {
- bch2_inode_pack(&inode_p, &inode_u);
- bch2_trans_update(trans, inode_iter,
- &inode_p.inode.k_i);
- }
- }
-
- ret = bch2_trans_commit(trans, disk_res,
- &inode->ei_journal_seq,
- BTREE_INSERT_NOFAIL|
- BTREE_INSERT_ATOMIC|
- BTREE_INSERT_NOUNLOCK|
- BTREE_INSERT_USE_RESERVE);
- if (ret)
- goto err;
-
- if (i_sectors_delta || extended) {
- inode->ei_inode.bi_sectors = inode_u.bi_sectors;
- inode->ei_inode.bi_size = inode_u.bi_size;
- }
-
- if (direct)
- i_sectors_acct(c, inode, quota_res, i_sectors_delta);
- if (direct && extended) {
- spin_lock(&inode->v.i_lock);
- if (new_i_size > inode->v.i_size)
- i_size_write(&inode->v, new_i_size);
- spin_unlock(&inode->v.i_lock);
- }
-
- if (total_delta)
- *total_delta += i_sectors_delta;
-err:
- if (!IS_ERR_OR_NULL(inode_iter))
- bch2_trans_iter_put(trans, inode_iter);
- return ret;
-}
-
-static int bchfs_write_index_update(struct bch_write_op *wop)
-{
- struct bch_fs *c = wop->c;
- struct bchfs_write_op *op = container_of(wop,
- struct bchfs_write_op, op);
- struct quota_res *quota_res = op->is_dio
- ? &container_of(op, struct dio_write, iop)->quota_res
- : NULL;
- struct bch_inode_info *inode = op->inode;
- struct keylist *keys = &op->op.insert_keys;
- struct bkey_i *k = bch2_keylist_front(keys);
- struct btree_trans trans;
- struct btree_iter *iter;
- int ret;
-
- BUG_ON(k->k.p.inode != inode->v.i_ino);
-
- bch2_trans_init(&trans, c, BTREE_ITER_MAX, 1024);
-
- iter = bch2_trans_get_iter(&trans, BTREE_ID_EXTENTS,
- bkey_start_pos(&k->k),
- BTREE_ITER_SLOTS|BTREE_ITER_INTENT);
-
- do {
- BKEY_PADDED(k) tmp;
-
- bkey_copy(&tmp.k, bch2_keylist_front(keys));
-
- bch2_trans_begin_updates(&trans);
-
- ret = bch2_extent_update(&trans, inode,
- &wop->res, quota_res,
- iter, &tmp.k,
- op->new_i_size,
- !op->unalloc,
- op->is_dio,
- &op->sectors_added);
- if (ret == -EINTR)
- continue;
- if (ret)
- break;
-
- if (bkey_cmp(iter->pos, bch2_keylist_front(keys)->k.p) < 0)
- bch2_cut_front(iter->pos, bch2_keylist_front(keys));
- else
- bch2_keylist_pop_front(keys);
- } while (!bch2_keylist_empty(keys));
-
- bch2_trans_exit(&trans);
-
- return ret;
-}
-
-static inline void bch2_fswrite_op_init(struct bchfs_write_op *op,
- struct bch_fs *c,
- struct bch_inode_info *inode,
- struct bch_io_opts opts,
- bool is_dio)
-{
- op->inode = inode;
- op->sectors_added = 0;
- op->is_dio = is_dio;
- op->unalloc = false;
- op->new_i_size = U64_MAX;
-
- bch2_write_op_init(&op->op, c, opts);
- op->op.target = opts.foreground_target;
- op->op.index_update_fn = bchfs_write_index_update;
- op_journal_seq_set(&op->op, &inode->ei_journal_seq);
-}
-
-static inline struct bch_io_opts io_opts(struct bch_fs *c, struct bch_inode_info *inode)
-{
- struct bch_io_opts opts = bch2_opts_to_inode_opts(c->opts);
-
- bch2_io_opts_apply(&opts, bch2_inode_opts_get(&inode->ei_inode));
- return opts;
-}
-
/* page state: */
/* stored in page->private: */
};
struct bch_page_state {
+ spinlock_t lock;
atomic_t write_count;
struct bch_page_sector s[PAGE_SECTORS];
};
if (!s)
return NULL;
+ spin_lock_init(&s->lock);
/*
* migrate_page_move_mapping() assumes that pages with private data
* have their count elevated by 1.
if (!s)
return;
+ EBUG_ON(!PageLocked(page));
+ EBUG_ON(PageWriteback(page));
+
for (i = 0; i < ARRAY_SIZE(s->s); i++) {
disk_res.sectors += s->s[i].replicas_reserved;
s->s[i].replicas_reserved = 0;
WARN_ON((u64) page_offset(page) + offset + len >
round_up((u64) i_size_read(&inode->v), block_bytes(c)));
+ spin_lock(&s->lock);
+
for (i = round_down(offset, block_bytes(c)) >> 9;
i < round_up(offset + len, block_bytes(c)) >> 9;
i++) {
s->s[i].state = max_t(unsigned, s->s[i].state, SECTOR_DIRTY);
}
+ spin_unlock(&s->lock);
+
if (dirty_sectors)
i_sectors_acct(c, inode, &res->quota, dirty_sectors);
void bch2_invalidatepage(struct page *page, unsigned int offset,
unsigned int length)
{
- EBUG_ON(!PageLocked(page));
- EBUG_ON(PageWriteback(page));
-
if (offset || length < PAGE_SIZE)
return;
int bch2_releasepage(struct page *page, gfp_t gfp_mask)
{
- /* XXX: this can't take locks that are held while we allocate memory */
- EBUG_ON(!PageLocked(page));
- EBUG_ON(PageWriteback(page));
-
if (PageDirty(page))
return 0;
{
struct bch_inode_info *inode = to_bch_ei(mapping->host);
struct bch_fs *c = inode->v.i_sb->s_fs_info;
- struct bch_io_opts opts = io_opts(c, inode);
+ struct bch_io_opts opts = io_opts(c, &inode->ei_inode);
struct btree_trans trans;
struct btree_iter *iter;
struct page *page;
{
struct bch_inode_info *inode = to_bch_ei(page->mapping->host);
struct bch_fs *c = inode->v.i_sb->s_fs_info;
- struct bch_io_opts opts = io_opts(c, inode);
+ struct bch_io_opts opts = io_opts(c, &inode->ei_inode);
struct bch_read_bio *rbio;
rbio = rbio_init(bio_alloc_bioset(GFP_NOFS, 1, &c->bio_read), opts);
DECLARE_COMPLETION_ONSTACK(done);
rbio = rbio_init(bio_alloc_bioset(GFP_NOFS, 1, &c->bio_read),
- io_opts(c, inode));
+ io_opts(c, &inode->ei_inode));
rbio->bio.bi_private = &done;
rbio->bio.bi_end_io = bch2_read_single_page_end_io;
static inline struct bch_writepage_state bch_writepage_state_init(struct bch_fs *c,
struct bch_inode_info *inode)
{
- return (struct bch_writepage_state) { .opts = io_opts(c, inode) };
+ return (struct bch_writepage_state) {
+ .opts = io_opts(c, &inode->ei_inode)
+ };
}
static void bch2_writepage_io_free(struct closure *cl)
struct bch_writepage_io *io = container_of(cl,
struct bch_writepage_io, cl);
- bio_put(&io->op.op.wbio.bio);
+ bio_put(&io->op.wbio.bio);
}
static void bch2_writepage_io_done(struct closure *cl)
{
struct bch_writepage_io *io = container_of(cl,
struct bch_writepage_io, cl);
- struct bch_fs *c = io->op.op.c;
- struct bio *bio = &io->op.op.wbio.bio;
+ struct bch_fs *c = io->op.c;
+ struct bio *bio = &io->op.wbio.bio;
struct bvec_iter_all iter;
struct bio_vec *bvec;
unsigned i;
- if (io->op.op.error) {
+ if (io->op.error) {
bio_for_each_segment_all(bvec, bio, iter) {
struct bch_page_state *s;
SetPageError(bvec->bv_page);
mapping_set_error(bvec->bv_page->mapping, -EIO);
- lock_page(bvec->bv_page);
- s = bch2_page_state(bvec->bv_page);
+ s = __bch2_page_state(bvec->bv_page);
+ spin_lock(&s->lock);
for (i = 0; i < PAGE_SECTORS; i++)
s->s[i].nr_replicas = 0;
- unlock_page(bvec->bv_page);
+ spin_unlock(&s->lock);
}
}
* racing with fallocate can cause us to add fewer sectors than
* expected - but we shouldn't add more sectors than expected:
*/
- BUG_ON(io->op.sectors_added > (s64) io->new_sectors);
+ BUG_ON(io->op.i_sectors_delta > 0);
/*
* (error (due to going RO) halfway through a page can screw that up
* slightly)
* XXX wtf?
- BUG_ON(io->op.sectors_added - io->new_sectors >= (s64) PAGE_SECTORS);
+ BUG_ON(io->op.op.i_sectors_delta >= PAGE_SECTORS);
*/
/*
* PageWriteback is effectively our ref on the inode - fixup i_blocks
* before calling end_page_writeback:
*/
- if (io->op.sectors_added != io->new_sectors)
- i_sectors_acct(c, io->op.inode, NULL,
- io->op.sectors_added - (s64) io->new_sectors);
+ i_sectors_acct(c, io->inode, NULL, io->op.i_sectors_delta);
bio_for_each_segment_all(bvec, bio, iter) {
struct bch_page_state *s = __bch2_page_state(bvec->bv_page);
struct bch_writepage_io *io = w->io;
w->io = NULL;
- closure_call(&io->op.op.cl, bch2_write, NULL, &io->cl);
+ closure_call(&io->op.cl, bch2_write, NULL, &io->cl);
continue_at(&io->cl, bch2_writepage_io_done, NULL);
}
w->io = container_of(bio_alloc_bioset(GFP_NOFS,
BIO_MAX_PAGES,
&c->writepage_bioset),
- struct bch_writepage_io, op.op.wbio.bio);
+ struct bch_writepage_io, op.wbio.bio);
closure_init(&w->io->cl, NULL);
- w->io->new_sectors = 0;
- bch2_fswrite_op_init(&w->io->op, c, inode, w->opts, false);
- op = &w->io->op.op;
+ w->io->inode = inode;
+
+ op = &w->io->op;
+ bch2_write_op_init(op, c, w->opts);
+ op->target = w->opts.foreground_target;
+ op_journal_seq_set(op, &inode->ei_journal_seq);
op->nr_replicas = nr_replicas;
op->res.nr_replicas = nr_replicas;
op->write_point = writepoint_hashed(inode->ei_last_dirtied);
}
if (w->io &&
- (w->io->op.op.res.nr_replicas != nr_replicas_this_write ||
- bio_full(&w->io->op.op.wbio.bio) ||
- bio_end_sector(&w->io->op.op.wbio.bio) != sector))
+ (w->io->op.res.nr_replicas != nr_replicas_this_write ||
+ bio_full(&w->io->op.wbio.bio) ||
+ bio_end_sector(&w->io->op.wbio.bio) != sector))
bch2_writepage_do_io(w);
if (!w->io)
bch2_writepage_io_alloc(c, w, inode, sector,
nr_replicas_this_write);
- w->io->new_sectors += dirty_sectors;
-
atomic_inc(&s->write_count);
- BUG_ON(inode != w->io->op.inode);
- BUG_ON(!bio_add_page(&w->io->op.op.wbio.bio, page,
+ BUG_ON(inode != w->io->inode);
+ BUG_ON(!bio_add_page(&w->io->op.wbio.bio, page,
sectors << 9, offset << 9));
/* Check for writing past i_size: */
- WARN_ON((bio_end_sector(&w->io->op.op.wbio.bio) << 9) >
+ WARN_ON((bio_end_sector(&w->io->op.wbio.bio) << 9) >
round_up(i_size, block_bytes(c)));
- w->io->op.op.res.sectors += reserved_sectors;
+ w->io->op.res.sectors += reserved_sectors;
+ w->io->op.i_sectors_delta -= dirty_sectors;
w->io->op.new_i_size = i_size;
if (wbc->sync_mode == WB_SYNC_ALL)
- w->io->op.op.wbio.bio.bi_opf |= REQ_SYNC;
+ w->io->op.wbio.bio.bi_opf |= REQ_SYNC;
offset += sectors;
}
struct file *file = req->ki_filp;
struct bch_inode_info *inode = file_bch_inode(file);
struct bch_fs *c = inode->v.i_sb->s_fs_info;
- struct bch_io_opts opts = io_opts(c, inode);
+ struct bch_io_opts opts = io_opts(c, &inode->ei_inode);
struct dio_read *dio;
struct bio *bio;
loff_t offset = req->ki_pos;
static long bch2_dio_write_loop(struct dio_write *dio)
{
bool kthread = (current->flags & PF_KTHREAD) != 0;
- struct bch_fs *c = dio->iop.op.c;
+ struct bch_fs *c = dio->op.c;
struct kiocb *req = dio->req;
struct address_space *mapping = req->ki_filp->f_mapping;
- struct bch_inode_info *inode = dio->iop.inode;
- struct bio *bio = &dio->iop.op.wbio.bio;
+ struct bch_inode_info *inode = file_bch_inode(req->ki_filp);
+ struct bio *bio = &dio->op.wbio.bio;
struct bvec_iter_all iter;
struct bio_vec *bv;
unsigned unaligned;
+ u64 new_i_size;
loff_t offset;
bool sync;
long ret;
__pagecache_block_get(&mapping->add_lock);
/* Write and invalidate pagecache range that we're writing to: */
- offset = req->ki_pos + (dio->iop.op.written << 9);
+ offset = req->ki_pos + (dio->op.written << 9);
ret = write_invalidate_inode_pages_range(mapping,
offset,
offset + iov_iter_count(&dio->iter) - 1);
goto err;
while (1) {
- offset = req->ki_pos + (dio->iop.op.written << 9);
+ offset = req->ki_pos + (dio->op.written << 9);
BUG_ON(current->pagecache_lock);
current->pagecache_lock = &mapping->add_lock;
if (unlikely(ret))
goto err;
- dio->iop.op.pos = POS(inode->v.i_ino, offset >> 9);
+ dio->op.pos = POS(inode->v.i_ino, offset >> 9);
task_io_account_write(bio->bi_iter.bi_size);
- closure_call(&dio->iop.op.cl, bch2_write, NULL, &dio->cl);
+ closure_call(&dio->op.cl, bch2_write, NULL, &dio->cl);
if (!dio->sync && !dio->loop && dio->iter.count) {
struct iovec *iov = dio->inline_vecs;
iov = kmalloc(dio->iter.nr_segs * sizeof(*iov),
GFP_KERNEL);
if (unlikely(!iov)) {
- dio->iop.op.error = -ENOMEM;
+ dio->op.error = -ENOMEM;
goto err_wait_io;
}
closure_sync(&dio->cl);
loop:
+ i_sectors_acct(c, inode, &dio->quota_res,
+ dio->op.i_sectors_delta);
+ dio->op.i_sectors_delta = 0;
+
+ new_i_size = req->ki_pos + ((u64) dio->op.written << 9);
+
+ spin_lock(&inode->v.i_lock);
+ if (new_i_size > inode->v.i_size)
+ i_size_write(&inode->v, new_i_size);
+ spin_unlock(&inode->v.i_lock);
+
bio_for_each_segment_all(bv, bio, iter)
put_page(bv->bv_page);
- if (!dio->iter.count || dio->iop.op.error)
+ if (!dio->iter.count || dio->op.error)
break;
bio_reset(bio);
}
- ret = dio->iop.op.error ?: ((long) dio->iop.op.written << 9);
+ ret = dio->op.error ?: ((long) dio->op.written << 9);
err:
__pagecache_block_put(&mapping->add_lock);
- bch2_disk_reservation_put(c, &dio->iop.op.res);
+ bch2_disk_reservation_put(c, &dio->op.res);
bch2_quota_reservation_put(c, inode, &dio->quota_res);
if (dio->free_iov)
struct file *file = req->ki_filp;
struct bch_inode_info *inode = file_bch_inode(file);
struct bch_fs *c = inode->v.i_sb->s_fs_info;
+ struct bch_io_opts opts = io_opts(c, &inode->ei_inode);
struct dio_write *dio;
struct bio *bio;
ssize_t ret;
bio = bio_alloc_bioset(GFP_KERNEL,
iov_iter_npages(iter, BIO_MAX_PAGES),
&c->dio_write_bioset);
- dio = container_of(bio, struct dio_write, iop.op.wbio.bio);
+ dio = container_of(bio, struct dio_write, op.wbio.bio);
closure_init(&dio->cl, NULL);
dio->req = req;
dio->mm = current->mm;
dio->free_iov = false;
dio->quota_res.sectors = 0;
dio->iter = *iter;
- bch2_fswrite_op_init(&dio->iop, c, inode, io_opts(c, inode), true);
- dio->iop.op.write_point = writepoint_hashed((unsigned long) current);
- dio->iop.op.flags |= BCH_WRITE_NOPUT_RESERVATION;
+
+ bch2_write_op_init(&dio->op, c, opts);
+ dio->op.target = opts.foreground_target;
+ op_journal_seq_set(&dio->op, &inode->ei_journal_seq);
+ dio->op.write_point = writepoint_hashed((unsigned long) current);
+ dio->op.flags |= BCH_WRITE_NOPUT_RESERVATION;
if ((req->ki_flags & IOCB_DSYNC) &&
!c->opts.journal_flush_disabled)
- dio->iop.op.flags |= BCH_WRITE_FLUSH;
+ dio->op.flags |= BCH_WRITE_FLUSH;
ret = bch2_quota_reservation_add(c, inode, &dio->quota_res,
iter->count >> 9, true);
if (unlikely(ret))
goto err;
- dio->iop.op.nr_replicas = dio->iop.op.opts.data_replicas;
-
- ret = bch2_disk_reservation_get(c, &dio->iop.op.res, iter->count >> 9,
- dio->iop.op.opts.data_replicas, 0);
- if (unlikely(ret)) {
- if (!bch2_check_range_allocated(c, POS(inode->v.i_ino,
- req->ki_pos >> 9),
- iter->count >> 9,
- dio->iop.op.opts.data_replicas))
- goto err;
+ dio->op.nr_replicas = dio->op.opts.data_replicas;
- dio->iop.unalloc = true;
- }
+ ret = bch2_disk_reservation_get(c, &dio->op.res, iter->count >> 9,
+ dio->op.opts.data_replicas, 0);
+ if (unlikely(ret) &&
+ !bch2_check_range_allocated(c, POS(inode->v.i_ino,
+ req->ki_pos >> 9),
+ iter->count >> 9,
+ dio->op.opts.data_replicas))
+ goto err;
return bch2_dio_write_loop(dio);
err:
- bch2_disk_reservation_put(c, &dio->iop.op.res);
+ bch2_disk_reservation_put(c, &dio->op.res);
bch2_quota_reservation_put(c, inode, &dio->quota_res);
closure_debug_destroy(&dio->cl);
bio_put(bio);
/* truncate: */
-int bch2_fpunch_at(struct btree_trans *trans, struct btree_iter *iter,
- struct bpos end, struct bch_inode_info *inode,
- u64 new_i_size)
-{
- struct bch_fs *c = trans->c;
- unsigned max_sectors = KEY_SIZE_MAX & (~0 << c->block_bits);
- struct bkey_s_c k;
- int ret = 0, ret2 = 0;
-
- while ((k = bch2_btree_iter_peek(iter)).k &&
- bkey_cmp(iter->pos, end) < 0) {
- struct disk_reservation disk_res =
- bch2_disk_reservation_init(c, 0);
- struct bkey_i delete;
-
- ret = bkey_err(k);
- if (ret)
- goto btree_err;
-
- bkey_init(&delete.k);
- delete.k.p = iter->pos;
-
- /* create the biggest key we can */
- bch2_key_resize(&delete.k, max_sectors);
- bch2_cut_back(end, &delete.k);
-
- bch2_trans_begin_updates(trans);
-
- ret = bch2_extent_update(trans, inode,
- &disk_res, NULL, iter, &delete,
- new_i_size, false, true, NULL);
- bch2_disk_reservation_put(c, &disk_res);
-btree_err:
- if (ret == -EINTR) {
- ret2 = ret;
- ret = 0;
- }
- if (ret)
- break;
- }
-
- if (bkey_cmp(iter->pos, end) > 0) {
- bch2_btree_iter_set_pos(iter, end);
- ret = bch2_btree_iter_traverse(iter);
- }
-
- return ret ?: ret2;
-}
-
-static int __bch2_fpunch(struct bch_fs *c, struct bch_inode_info *inode,
- u64 start_offset, u64 end_offset)
-{
- struct btree_trans trans;
- struct btree_iter *iter;
- int ret = 0;
-
- bch2_trans_init(&trans, c, BTREE_ITER_MAX, 1024);
-
- iter = bch2_trans_get_iter(&trans, BTREE_ID_EXTENTS,
- POS(inode->v.i_ino, start_offset),
- BTREE_ITER_INTENT);
-
- ret = bch2_fpunch_at(&trans, iter,
- POS(inode->v.i_ino, end_offset),
- inode, 0);
-
- bch2_trans_exit(&trans);
-
- if (ret == -EINTR)
- ret = 0;
-
- return ret;
-}
-
static inline int range_has_data(struct bch_fs *c,
struct bpos start,
struct bpos end)
from, round_up(from, PAGE_SIZE));
}
-static int bch2_extend(struct bch_inode_info *inode, struct iattr *iattr)
+static int bch2_extend(struct bch_inode_info *inode,
+ struct bch_inode_unpacked *inode_u,
+ struct iattr *iattr)
{
struct bch_fs *c = inode->v.i_sb->s_fs_info;
struct address_space *mapping = inode->v.i_mapping;
int ret;
- ret = filemap_write_and_wait_range(mapping,
- inode->ei_inode.bi_size, S64_MAX);
+ /*
+ * sync appends:
+ *
+ * this has to be done _before_ extending i_size:
+ */
+ ret = filemap_write_and_wait_range(mapping, inode_u->bi_size, S64_MAX);
if (ret)
return ret;
{
struct bch_fs *c = inode->v.i_sb->s_fs_info;
struct address_space *mapping = inode->v.i_mapping;
+ struct bch_inode_unpacked inode_u;
+ struct btree_trans trans;
+ struct btree_iter *iter;
u64 new_i_size = iattr->ia_size;
- bool shrink;
+ s64 i_sectors_delta = 0;
int ret = 0;
inode_dio_wait(&inode->v);
pagecache_block_get(&mapping->add_lock);
- BUG_ON(inode->v.i_size < inode->ei_inode.bi_size);
+ /*
+ * fetch current on disk i_size: inode is locked, i_size can only
+ * increase underneath us:
+ */
+ bch2_trans_init(&trans, c, 0, 0);
+ iter = bch2_inode_peek(&trans, &inode_u, inode->v.i_ino, 0);
+ ret = PTR_ERR_OR_ZERO(iter);
+ bch2_trans_exit(&trans);
+
+ if (ret)
+ goto err;
- shrink = iattr->ia_size <= inode->v.i_size;
+ BUG_ON(inode->v.i_size < inode_u.bi_size);
- if (!shrink) {
- ret = bch2_extend(inode, iattr);
+ if (iattr->ia_size > inode->v.i_size) {
+ ret = bch2_extend(inode, &inode_u, iattr);
goto err;
}
* userspace has to redirty it and call .mkwrite -> set_page_dirty
* again to allocate the part of the page that was extended.
*/
- if (iattr->ia_size > inode->ei_inode.bi_size)
+ if (iattr->ia_size > inode_u.bi_size)
ret = filemap_write_and_wait_range(mapping,
- inode->ei_inode.bi_size,
+ inode_u.bi_size,
iattr->ia_size - 1);
else if (iattr->ia_size & (PAGE_SIZE - 1))
ret = filemap_write_and_wait_range(mapping,
truncate_setsize(&inode->v, iattr->ia_size);
- ret = __bch2_fpunch(c, inode,
+ ret = bch2_fpunch(c, inode->v.i_ino,
round_up(iattr->ia_size, block_bytes(c)) >> 9,
- U64_MAX);
+ U64_MAX, &inode->ei_journal_seq, &i_sectors_delta);
+ i_sectors_acct(c, inode, NULL, i_sectors_delta);
+
if (unlikely(ret))
goto err;
/* fallocate: */
-static long bch2_fpunch(struct bch_inode_info *inode, loff_t offset, loff_t len)
+static long bchfs_fpunch(struct bch_inode_info *inode, loff_t offset, loff_t len)
{
struct bch_fs *c = inode->v.i_sb->s_fs_info;
struct address_space *mapping = inode->v.i_mapping;
truncate_pagecache_range(&inode->v, offset, offset + len - 1);
- if (discard_start < discard_end)
- ret = __bch2_fpunch(c, inode, discard_start, discard_end);
+ if (discard_start < discard_end) {
+ s64 i_sectors_delta = 0;
+
+ ret = bch2_fpunch(c, inode->v.i_ino,
+ discard_start, discard_end,
+ &inode->ei_journal_seq,
+ &i_sectors_delta);
+ i_sectors_acct(c, inode, NULL, i_sectors_delta);
+ }
err:
pagecache_block_put(&mapping->add_lock);
inode_unlock(&inode->v);
return ret;
}
-static long bch2_fcollapse_finsert(struct bch_inode_info *inode,
+static long bchfs_fcollapse_finsert(struct bch_inode_info *inode,
loff_t offset, loff_t len,
bool insert)
{
ATTR_MTIME|ATTR_CTIME);
mutex_unlock(&inode->ei_update_lock);
} else {
- ret = __bch2_fpunch(c, inode, offset >> 9,
- (offset + len) >> 9);
+ s64 i_sectors_delta = 0;
+
+ ret = bch2_fpunch(c, inode->v.i_ino,
+ offset >> 9, (offset + len) >> 9,
+ &inode->ei_journal_seq,
+ &i_sectors_delta);
+ i_sectors_acct(c, inode, NULL, i_sectors_delta);
+
if (ret)
goto err;
}
copy.k.k.p.offset += shift >> 9;
bch2_btree_iter_set_pos(dst, bkey_start_pos(©.k.k));
- ret = bch2_btree_iter_traverse(dst);
- if (ret)
- goto bkey_err;
-
ret = bch2_extent_atomic_end(dst, ©.k, &atomic_end);
if (ret)
goto bkey_err;
return ret;
}
-static long bch2_fallocate(struct bch_inode_info *inode, int mode,
- loff_t offset, loff_t len)
+static long bchfs_fallocate(struct bch_inode_info *inode, int mode,
+ loff_t offset, loff_t len)
{
struct address_space *mapping = inode->v.i_mapping;
struct bch_fs *c = inode->v.i_sb->s_fs_info;
loff_t block_start = round_down(offset, block_bytes(c));
loff_t block_end = round_up(end, block_bytes(c));
unsigned sectors;
- unsigned replicas = io_opts(c, inode).data_replicas;
+ unsigned replicas = io_opts(c, &inode->ei_inode).data_replicas;
int ret;
bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
end_pos = POS(inode->v.i_ino, block_end >> 9);
while (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;
bch2_trans_begin_updates(&trans);
- ret = bch2_extent_update(&trans, inode,
- &disk_res, "a_res,
- iter, &reservation.k_i,
- 0, true, true, NULL);
+ ret = bch2_extent_update(&trans, iter, &reservation.k_i,
+ &disk_res, &inode->ei_journal_seq,
+ 0, &i_sectors_delta);
+ i_sectors_acct(c, inode, "a_res, i_sectors_delta);
bkey_err:
bch2_quota_reservation_put(c, inode, "a_res);
bch2_disk_reservation_put(c, &disk_res);
if (ret)
goto err;
}
- bch2_trans_unlock(&trans);
- if (!(mode & FALLOC_FL_KEEP_SIZE) &&
- end > inode->v.i_size) {
- i_size_write(&inode->v, end);
+ /*
+ * Do we need to extend the file?
+ *
+ * If we zeroed up to the end of the file, we dropped whatever writes
+ * were going to write out the current i_size, so we have to extend
+ * manually even if FL_KEEP_SIZE was set:
+ */
+ if (end >= inode->v.i_size &&
+ (!(mode & FALLOC_FL_KEEP_SIZE) ||
+ (mode & FALLOC_FL_ZERO_RANGE))) {
+ struct btree_iter *inode_iter;
+ struct bch_inode_unpacked inode_u;
- mutex_lock(&inode->ei_update_lock);
- ret = bch2_write_inode_size(c, inode, inode->v.i_size, 0);
- mutex_unlock(&inode->ei_update_lock);
- }
+ do {
+ bch2_trans_begin(&trans);
+ inode_iter = bch2_inode_peek(&trans, &inode_u,
+ inode->v.i_ino, 0);
+ ret = PTR_ERR_OR_ZERO(inode_iter);
+ } while (ret == -EINTR);
+
+ bch2_trans_unlock(&trans);
+
+ if (ret)
+ goto err;
- /* blech */
- if ((mode & FALLOC_FL_KEEP_SIZE) &&
- (mode & FALLOC_FL_ZERO_RANGE) &&
- inode->ei_inode.bi_size != inode->v.i_size) {
- /* sync appends.. */
+ /*
+ * Sync existing appends before extending i_size,
+ * as in bch2_extend():
+ */
ret = filemap_write_and_wait_range(mapping,
- inode->ei_inode.bi_size, S64_MAX);
+ inode_u.bi_size, S64_MAX);
if (ret)
goto err;
- if (inode->ei_inode.bi_size != inode->v.i_size) {
- mutex_lock(&inode->ei_update_lock);
- ret = bch2_write_inode_size(c, inode,
- inode->v.i_size, 0);
- mutex_unlock(&inode->ei_update_lock);
- }
+ if (mode & FALLOC_FL_KEEP_SIZE)
+ end = inode->v.i_size;
+ else
+ i_size_write(&inode->v, end);
+
+ mutex_lock(&inode->ei_update_lock);
+ ret = bch2_write_inode_size(c, inode, end, 0);
+ mutex_unlock(&inode->ei_update_lock);
}
err:
bch2_trans_exit(&trans);
struct bch_inode_info *inode = file_bch_inode(file);
if (!(mode & ~(FALLOC_FL_KEEP_SIZE|FALLOC_FL_ZERO_RANGE)))
- return bch2_fallocate(inode, mode, offset, len);
+ return bchfs_fallocate(inode, mode, offset, len);
if (mode == (FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE))
- return bch2_fpunch(inode, offset, len);
+ return bchfs_fpunch(inode, offset, len);
if (mode == FALLOC_FL_INSERT_RANGE)
- return bch2_fcollapse_finsert(inode, offset, len, true);
+ return bchfs_fcollapse_finsert(inode, offset, len, true);
if (mode == FALLOC_FL_COLLAPSE_RANGE)
- return bch2_fcollapse_finsert(inode, offset, len, false);
+ return bchfs_fcollapse_finsert(inode, offset, len, false);
return -EOPNOTSUPP;
}
lock_page(page);
s = bch2_page_state(page);
- if (s)
+ if (s) {
+ spin_lock(&s->lock);
for (j = 0; j < PAGE_SECTORS; j++)
s->s[j].nr_replicas = 0;
+ spin_unlock(&s->lock);
+ }
unlock_page(page);
}
struct bch_inode_info *src = file_bch_inode(file_src);
struct bch_inode_info *dst = file_bch_inode(file_dst);
struct bch_fs *c = src->v.i_sb->s_fs_info;
+ s64 i_sectors_delta = 0;
loff_t ret = 0;
loff_t aligned_len;
bch2_lock_inodes(INODE_LOCK, src, dst);
+ file_update_time(file_dst);
+
inode_dio_wait(&src->v);
inode_dio_wait(&dst->v);
file_dst, pos_dst,
&len, remap_flags);
if (ret < 0 || len == 0)
- goto out_unlock;
+ goto err;
aligned_len = round_up(len, block_bytes(c));
ret = write_invalidate_inode_pages_range(dst->v.i_mapping,
pos_dst, pos_dst + aligned_len);
if (ret)
- goto out_unlock;
+ goto err;
mark_range_unallocated(src, pos_src, pos_src + aligned_len);
- ret = bch2_remap_range(c, dst,
+ ret = bch2_remap_range(c,
POS(dst->v.i_ino, pos_dst >> 9),
POS(src->v.i_ino, pos_src >> 9),
aligned_len >> 9,
- pos_dst + len);
- if (ret > 0)
- ret = min(ret << 9, len);
+ &dst->ei_journal_seq,
+ pos_dst + len, &i_sectors_delta);
+ if (ret < 0)
+ goto err;
+
+ ret <<= 9;
+ /*
+ * due to alignment, we might have remapped slightly more than requsted
+ */
+ ret = min(ret, len);
+
+ /* XXX get a quota reservation */
+ i_sectors_acct(c, dst, NULL, i_sectors_delta);
-out_unlock:
+ spin_lock(&dst->v.i_lock);
+ if (pos_dst + len > dst->v.i_size)
+ i_size_write(&dst->v, pos_dst + len);
+ spin_unlock(&dst->v.i_lock);
+err:
__pagecache_block_put(&dst->v.i_mapping->add_lock);
__pagecache_block_put(&src->v.i_mapping->add_lock);
pr_verbose_init(c->opts, "");
if (bioset_init(&c->writepage_bioset,
- 4, offsetof(struct bch_writepage_io, op.op.wbio.bio),
+ 4, offsetof(struct bch_writepage_io, op.wbio.bio),
BIOSET_NEED_BVECS) ||
bioset_init(&c->dio_read_bioset,
4, offsetof(struct dio_read, rbio.bio),
BIOSET_NEED_BVECS) ||
bioset_init(&c->dio_write_bioset,
- 4, offsetof(struct dio_write, iop.op.wbio.bio),
+ 4, offsetof(struct dio_write, op.wbio.bio),
BIOSET_NEED_BVECS))
ret = -ENOMEM;
projects / bcachefs-tools-debian / blobdiff