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Commit 9a3df993 authored by Kent Overstreet's avatar Kent Overstreet Committed by Kent Overstreet
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bcachefs: Kill bchfs_extent_update() 

The generic IO path now handles inode updates for i_size and i_sectors -
this means we can drop a fair amount of code from fs-io.c.
Signed-off-by: default avatarKent Overstreet <kent.overstreet@linux.dev>
parent 2e87eae1
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Showing with 132 additions and 249 deletions
fs/bcachefs/fs-io.c
View file @ 9a3df993
......@@ -45,23 +45,12 @@ struct quota_res {
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 {
......@@ -77,7 +66,7 @@ struct dio_write {
struct iovec inline_vecs[2];
/* must be last: */
struct bchfs_write_op iop;
struct bch_write_op op;
};
struct dio_read {
......@@ -237,121 +226,6 @@ static void i_sectors_acct(struct bch_fs *c, struct bch_inode_info *inode,
mutex_unlock(&inode->ei_quota_lock);
}
int bchfs_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)
{
s64 i_sectors_delta = 0;
int ret;
ret = bch2_extent_update(trans, extent_iter, k,
disk_res, &inode->ei_journal_seq,
new_i_size, &i_sectors_delta);
if (ret)
return ret;
new_i_size = min(new_i_size, extent_iter->pos.offset << 9);
if (direct)
i_sectors_acct(trans->c, inode, quota_res, i_sectors_delta);
if (direct && new_i_size) {
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;
return 0;
}
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 = bchfs_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: */
......@@ -947,7 +821,7 @@ void bch2_readahead(struct readahead_control *ractl)
{
struct bch_inode_info *inode = to_bch_ei(ractl->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;
......@@ -1028,7 +902,7 @@ static int bch2_read_single_page(struct page *page,
DECLARE_COMPLETION_ONSTACK(done);
rbio = rbio_init(bio_alloc_bioset(NULL, 1, REQ_OP_READ, GFP_NOFS, &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;
......@@ -1065,7 +939,9 @@ struct bch_writepage_state {
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)
......@@ -1073,20 +949,20 @@ 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;
......@@ -1105,22 +981,20 @@ static void bch2_writepage_io_done(struct closure *cl)
* 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);
......@@ -1137,7 +1011,7 @@ static void bch2_writepage_do_io(struct bch_writepage_state *w)
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);
}
......@@ -1157,12 +1031,15 @@ static void bch2_writepage_io_alloc(struct bch_fs *c,
REQ_OP_WRITE,
GFP_NOFS,
&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);
......@@ -1272,32 +1149,31 @@ static int __bch2_writepage(struct folio *folio,
}
if (w->io &&
(w->io->op.op.res.nr_replicas != nr_replicas_this_write ||
bio_full(&w->io->op.op.wbio.bio, PAGE_SIZE) ||
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, PAGE_SIZE) ||
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;
}
......@@ -1705,7 +1581,7 @@ static int bch2_direct_IO_read(struct kiocb *req, struct iov_iter *iter)
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;
......@@ -1878,14 +1754,15 @@ static void bch2_dio_write_loop_async(struct closure *);
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;
......@@ -1897,7 +1774,7 @@ static long bch2_dio_write_loop(struct dio_write *dio)
bch2_pagecache_block_get(&inode->ei_pagecache_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);
......@@ -1905,7 +1782,7 @@ static long bch2_dio_write_loop(struct dio_write *dio)
goto err;
while (1) {
offset = req->ki_pos + (dio->iop.op.written << 9);
offset = req->ki_pos + (dio->op.written << 9);
if (kthread)
kthread_use_mm(dio->mm);
......@@ -1943,15 +1820,15 @@ static long bch2_dio_write_loop(struct dio_write *dio)
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) {
if (bch2_dio_write_copy_iov(dio)) {
dio->iop.op.error = -ENOMEM;
dio->op.error = -ENOMEM;
goto err_wait_io;
}
}
......@@ -1965,17 +1842,28 @@ static long bch2_dio_write_loop(struct dio_write *dio)
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, NULL, REQ_OP_WRITE);
}
ret = dio->iop.op.error ?: ((long) dio->iop.op.written << 9);
ret = dio->op.error ?: ((long) dio->op.written << 9);
err:
bch2_pagecache_block_put(&inode->ei_pagecache_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)
......@@ -2009,6 +1897,7 @@ ssize_t bch2_direct_write(struct kiocb *req, struct iov_iter *iter)
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;
......@@ -2026,7 +1915,7 @@ ssize_t bch2_direct_write(struct kiocb *req, struct iov_iter *iter)
REQ_OP_WRITE,
GFP_KERNEL,
&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;
......@@ -2036,36 +1925,36 @@ ssize_t bch2_direct_write(struct kiocb *req, struct iov_iter *iter)
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;
dio->op.nr_replicas = dio->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->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);
......@@ -2671,7 +2560,7 @@ static long bchfs_fallocate(struct bch_inode_info *inode, int mode,
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);
......@@ -3180,13 +3069,13 @@ int bch2_fs_fsio_init(struct bch_fs *c)
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;
......
fs/bcachefs/fs-io.h
View file @ 9a3df993
......@@ -11,14 +11,6 @@
struct quota_res;
int bchfs_extent_update(struct btree_trans *,
struct bch_inode_info *,
struct disk_reservation *,
struct quota_res *,
struct btree_iter *,
struct bkey_i *,
u64, bool, bool, s64 *);
int __must_check bch2_write_inode_size(struct bch_fs *,
struct bch_inode_info *,
loff_t, unsigned);
......
fs/bcachefs/inode.h
View file @ 9a3df993
......@@ -111,6 +111,15 @@ static inline u64 bch2_inode_opt_get(struct bch_inode_unpacked *inode,
}
}
static inline struct bch_io_opts
io_opts(struct bch_fs *c, struct bch_inode_unpacked *inode)
{
struct bch_io_opts opts = bch2_opts_to_inode_opts(c->opts);
bch2_io_opts_apply(&opts, bch2_inode_opts_get(inode));
return opts;
}
static inline u8 mode_to_type(umode_t mode)
{
return (mode >> 12) & 15;
......
fs/bcachefs/io.c
View file @ 9a3df993
......@@ -390,6 +390,47 @@ int bch2_fpunch(struct bch_fs *c, u64 inum, u64 start, u64 end,
return ret;
}
int bch2_write_index_default(struct bch_write_op *op)
{
struct bch_fs *c = op->c;
struct keylist *keys = &op->insert_keys;
struct bkey_i *k = bch2_keylist_front(keys);
struct btree_trans trans;
struct btree_iter *iter;
int ret;
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, iter, &tmp.k,
&op->res, op_journal_seq(op),
op->new_i_size, &op->i_sectors_delta);
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;
}
/* Writes */
void bch2_submit_wbio_replicas(struct bch_write_bio *wbio, struct bch_fs *c,
......@@ -474,58 +515,6 @@ static void bch2_write_done(struct closure *cl)
closure_return(cl);
}
int bch2_write_index_default(struct bch_write_op *op)
{
struct bch_fs *c = op->c;
struct btree_trans trans;
struct btree_iter *iter;
struct keylist *keys = &op->insert_keys;
int ret;
BUG_ON(bch2_keylist_empty(keys));
bch2_verify_keylist_sorted(keys);
bch2_trans_init(&trans, c, BTREE_ITER_MAX, 256);
retry:
bch2_trans_begin(&trans);
iter = bch2_trans_get_iter(&trans, BTREE_ID_EXTENTS,
bkey_start_pos(&bch2_keylist_front(keys)->k),
BTREE_ITER_INTENT);
do {
BKEY_PADDED(k) split;
bkey_copy(&split.k, bch2_keylist_front(keys));
ret = bch2_extent_trim_atomic(&split.k, iter);
if (ret)
break;
bch2_trans_update(&trans, iter, &split.k);
ret = bch2_trans_commit(&trans, &op->res, op_journal_seq(op),
BTREE_INSERT_NOFAIL|
BTREE_INSERT_USE_RESERVE);
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));
if (ret == -EINTR) {
ret = 0;
goto retry;
}
bch2_trans_exit(&trans);
return ret;
}
/**
* bch_write_index - after a write, update index to point to new data
*/
......
fs/bcachefs/io.h
View file @ 9a3df993
......@@ -89,6 +89,8 @@ static inline void bch2_write_op_init(struct bch_write_op *op, struct bch_fs *c,
op->write_point = (struct write_point_specifier) { 0 };
op->res = (struct disk_reservation) { 0 };
op->journal_seq = 0;
op->new_i_size = U64_MAX;
op->i_sectors_delta = 0;
op->index_update_fn = bch2_write_index_default;
}
......
fs/bcachefs/io_types.h
View file @ 9a3df993
......@@ -134,6 +134,8 @@ struct bch_write_op {
u64 *journal_seq_p;
u64 journal_seq;
};
u64 new_i_size;
s64 i_sectors_delta;
int (*index_update_fn)(struct bch_write_op *);
......
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