struct btrfs_fs_info *info;
blk_status_t status;
enum btrfs_wq_endio_type metadata;
- struct list_head list;
struct btrfs_work work;
};
* just before they are sent down the IO stack.
*/
struct async_submit_bio {
- struct inode *inode;
+ void *private_data;
+ struct btrfs_fs_info *fs_info;
struct bio *bio;
- struct list_head list;
extent_submit_bio_hook_t *submit_bio_start;
extent_submit_bio_hook_t *submit_bio_done;
int mirror_num;
blk_status_t ret;
async = container_of(work, struct async_submit_bio, work);
- ret = async->submit_bio_start(async->inode, async->bio,
+ ret = async->submit_bio_start(async->private_data, async->bio,
async->mirror_num, async->bio_flags,
async->bio_offset);
if (ret)
int limit;
async = container_of(work, struct async_submit_bio, work);
- fs_info = BTRFS_I(async->inode)->root->fs_info;
+ fs_info = async->fs_info;
limit = btrfs_async_submit_limit(fs_info);
limit = limit * 2 / 3;
return;
}
- async->submit_bio_done(async->inode, async->bio, async->mirror_num,
+ async->submit_bio_done(async->private_data, async->bio, async->mirror_num,
async->bio_flags, async->bio_offset);
}
kfree(async);
}
-blk_status_t btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info,
- struct inode *inode, struct bio *bio, int mirror_num,
- unsigned long bio_flags, u64 bio_offset,
- extent_submit_bio_hook_t *submit_bio_start,
- extent_submit_bio_hook_t *submit_bio_done)
+blk_status_t btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct bio *bio,
+ int mirror_num, unsigned long bio_flags,
+ u64 bio_offset, void *private_data,
+ extent_submit_bio_hook_t *submit_bio_start,
+ extent_submit_bio_hook_t *submit_bio_done)
{
struct async_submit_bio *async;
if (!async)
return BLK_STS_RESOURCE;
- async->inode = inode;
+ async->private_data = private_data;
+ async->fs_info = fs_info;
async->bio = bio;
async->mirror_num = mirror_num;
async->submit_bio_start = submit_bio_start;
return errno_to_blk_status(ret);
}
-static blk_status_t __btree_submit_bio_start(struct inode *inode,
- struct bio *bio, int mirror_num, unsigned long bio_flags,
- u64 bio_offset)
+static blk_status_t __btree_submit_bio_start(void *private_data, struct bio *bio,
+ int mirror_num, unsigned long bio_flags,
+ u64 bio_offset)
{
/*
* when we're called for a write, we're already in the async
return btree_csum_one_bio(bio);
}
-static blk_status_t __btree_submit_bio_done(struct inode *inode,
- struct bio *bio, int mirror_num, unsigned long bio_flags,
- u64 bio_offset)
+static blk_status_t __btree_submit_bio_done(void *private_data, struct bio *bio,
+ int mirror_num, unsigned long bio_flags,
+ u64 bio_offset)
{
+ struct inode *inode = private_data;
blk_status_t ret;
/*
return 1;
}
-static blk_status_t btree_submit_bio_hook(struct inode *inode, struct bio *bio,
- int mirror_num, unsigned long bio_flags,
- u64 bio_offset)
+static blk_status_t btree_submit_bio_hook(void *private_data, struct bio *bio,
+ int mirror_num, unsigned long bio_flags,
+ u64 bio_offset)
{
+ struct inode *inode = private_data;
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
int async = check_async_write(bio_flags);
blk_status_t ret;
* kthread helpers are used to submit writes so that
* checksumming can happen in parallel across all CPUs
*/
- ret = btrfs_wq_submit_bio(fs_info, inode, bio, mirror_num, 0,
- bio_offset,
+ ret = btrfs_wq_submit_bio(fs_info, bio, mirror_num, 0,
+ bio_offset, private_data,
__btree_submit_bio_start,
__btree_submit_bio_done);
}
buf->start + buf->len - 1);
}
-int btrfs_wait_tree_block_writeback(struct extent_buffer *buf)
+void btrfs_wait_tree_block_writeback(struct extent_buffer *buf)
{
- return filemap_fdatawait_range(buf->pages[0]->mapping,
- buf->start, buf->start + buf->len - 1);
+ filemap_fdatawait_range(buf->pages[0]->mapping,
+ buf->start, buf->start + buf->len - 1);
}
struct extent_buffer *read_tree_block(struct btrfs_fs_info *fs_info, u64 bytenr,
root->log_transid_committed = -1;
root->last_log_commit = 0;
if (!dummy)
- extent_io_tree_init(&root->dirty_log_pages,
- fs_info->btree_inode->i_mapping);
+ extent_io_tree_init(&root->dirty_log_pages, NULL);
memset(&root->root_key, 0, sizeof(root->root_key));
memset(&root->root_item, 0, sizeof(root->root_item));
inode->i_mapping->a_ops = &btree_aops;
RB_CLEAR_NODE(&BTRFS_I(inode)->rb_node);
- extent_io_tree_init(&BTRFS_I(inode)->io_tree, inode->i_mapping);
+ extent_io_tree_init(&BTRFS_I(inode)->io_tree, inode);
BTRFS_I(inode)->io_tree.track_uptodate = 0;
extent_map_tree_init(&BTRFS_I(inode)->extent_tree);
spin_lock_init(&fs_info->fs_roots_radix_lock);
spin_lock_init(&fs_info->delayed_iput_lock);
spin_lock_init(&fs_info->defrag_inodes_lock);
- spin_lock_init(&fs_info->free_chunk_lock);
spin_lock_init(&fs_info->tree_mod_seq_lock);
spin_lock_init(&fs_info->super_lock);
spin_lock_init(&fs_info->qgroup_op_lock);
atomic_set(&fs_info->qgroup_op_seq, 0);
atomic_set(&fs_info->reada_works_cnt, 0);
atomic64_set(&fs_info->tree_mod_seq, 0);
- fs_info->fs_frozen = 0;
fs_info->sb = sb;
fs_info->max_inline = BTRFS_DEFAULT_MAX_INLINE;
fs_info->metadata_ratio = 0;
fs_info->defrag_inodes = RB_ROOT;
- fs_info->free_chunk_space = 0;
+ atomic64_set(&fs_info->free_chunk_space, 0);
fs_info->tree_mod_log = RB_ROOT;
fs_info->commit_interval = BTRFS_DEFAULT_COMMIT_INTERVAL;
fs_info->avg_delayed_ref_runtime = NSEC_PER_SEC >> 6; /* div by 64 */
fs_info->block_group_cache_tree = RB_ROOT;
fs_info->first_logical_byte = (u64)-1;
- extent_io_tree_init(&fs_info->freed_extents[0],
- fs_info->btree_inode->i_mapping);
- extent_io_tree_init(&fs_info->freed_extents[1],
- fs_info->btree_inode->i_mapping);
+ extent_io_tree_init(&fs_info->freed_extents[0], NULL);
+ extent_io_tree_init(&fs_info->freed_extents[1], NULL);
fs_info->pinned_extents = &fs_info->freed_extents[0];
set_bit(BTRFS_FS_BARRIER, &fs_info->flags);
*/
static void btrfs_end_empty_barrier(struct bio *bio)
{
- if (bio->bi_private)
- complete(bio->bi_private);
- bio_put(bio);
+ complete(bio->bi_private);
}
/*
- * trigger flushes for one the devices. If you pass wait == 0, the flushes are
- * sent down. With wait == 1, it waits for the previous flush.
- *
- * any device where the flush fails with eopnotsupp are flagged as not-barrier
- * capable
+ * Submit a flush request to the device if it supports it. Error handling is
+ * done in the waiting counterpart.
*/
-static blk_status_t write_dev_flush(struct btrfs_device *device, int wait)
+static void write_dev_flush(struct btrfs_device *device)
{
struct request_queue *q = bdev_get_queue(device->bdev);
- struct bio *bio;
- blk_status_t ret = 0;
+ struct bio *bio = device->flush_bio;
if (!test_bit(QUEUE_FLAG_WC, &q->queue_flags))
- return 0;
+ return;
- if (wait) {
- bio = device->flush_bio;
- if (!bio)
- return 0;
+ bio_reset(bio);
+ bio->bi_end_io = btrfs_end_empty_barrier;
+ bio->bi_bdev = device->bdev;
+ bio->bi_opf = REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH;
+ init_completion(&device->flush_wait);
+ bio->bi_private = &device->flush_wait;
- wait_for_completion(&device->flush_wait);
+ submit_bio(bio);
+ device->flush_bio_sent = 1;
+}
- if (bio->bi_status) {
- ret = bio->bi_status;
- btrfs_dev_stat_inc_and_print(device,
- BTRFS_DEV_STAT_FLUSH_ERRS);
- }
+/*
+ * If the flush bio has been submitted by write_dev_flush, wait for it.
+ */
+static blk_status_t wait_dev_flush(struct btrfs_device *device)
+{
+ struct bio *bio = device->flush_bio;
- /* drop the reference from the wait == 0 run */
- bio_put(bio);
- device->flush_bio = NULL;
+ if (!device->flush_bio_sent)
+ return 0;
- return ret;
- }
+ device->flush_bio_sent = 0;
+ wait_for_completion_io(&device->flush_wait);
- /*
- * one reference for us, and we leave it for the
- * caller
- */
- device->flush_bio = NULL;
- bio = btrfs_io_bio_alloc(GFP_NOFS, 0);
- if (!bio)
- return BLK_STS_RESOURCE;
+ return bio->bi_status;
+}
- bio->bi_end_io = btrfs_end_empty_barrier;
- bio->bi_bdev = device->bdev;
- bio->bi_opf = REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH;
- init_completion(&device->flush_wait);
- bio->bi_private = &device->flush_wait;
- device->flush_bio = bio;
+static int check_barrier_error(struct btrfs_fs_devices *fsdevs)
+{
+ int dev_flush_error = 0;
+ struct btrfs_device *dev;
- bio_get(bio);
- btrfsic_submit_bio(bio);
+ list_for_each_entry_rcu(dev, &fsdevs->devices, dev_list) {
+ if (!dev->bdev || dev->last_flush_error)
+ dev_flush_error++;
+ }
+
+ if (dev_flush_error >
+ fsdevs->fs_info->num_tolerated_disk_barrier_failures)
+ return -EIO;
return 0;
}
{
struct list_head *head;
struct btrfs_device *dev;
- int errors_send = 0;
int errors_wait = 0;
blk_status_t ret;
list_for_each_entry_rcu(dev, head, dev_list) {
if (dev->missing)
continue;
- if (!dev->bdev) {
- errors_send++;
+ if (!dev->bdev)
continue;
- }
if (!dev->in_fs_metadata || !dev->writeable)
continue;
- ret = write_dev_flush(dev, 0);
- if (ret)
- errors_send++;
+ write_dev_flush(dev);
+ dev->last_flush_error = 0;
}
/* wait for all the barriers */
if (!dev->in_fs_metadata || !dev->writeable)
continue;
- ret = write_dev_flush(dev, 1);
- if (ret)
+ ret = wait_dev_flush(dev);
+ if (ret) {
+ dev->last_flush_error = ret;
+ btrfs_dev_stat_inc_and_print(dev,
+ BTRFS_DEV_STAT_FLUSH_ERRS);
errors_wait++;
+ }
+ }
+
+ if (errors_wait) {
+ /*
+ * At some point we need the status of all disks
+ * to arrive at the volume status. So error checking
+ * is being pushed to a separate loop.
+ */
+ return check_barrier_error(info->fs_devices);
}
- if (errors_send > info->num_tolerated_disk_barrier_failures ||
- errors_wait > info->num_tolerated_disk_barrier_failures)
- return -EIO;
return 0;
}
cur_trans->state =TRANS_STATE_COMPLETED;
wake_up(&cur_trans->commit_wait);
-
- /*
- memset(cur_trans, 0, sizeof(*cur_trans));
- kmem_cache_free(btrfs_transaction_cachep, cur_trans);
- */
}
static int btrfs_cleanup_transaction(struct btrfs_fs_info *fs_info)
return 0;
}
+static struct btrfs_fs_info *btree_fs_info(void *private_data)
+{
+ struct inode *inode = private_data;
+ return btrfs_sb(inode->i_sb);
+}
+
static const struct extent_io_ops btree_extent_io_ops = {
/* mandatory callbacks */
.submit_bio_hook = btree_submit_bio_hook,
/* note we're sharing with inode.c for the merge bio hook */
.merge_bio_hook = btrfs_merge_bio_hook,
.readpage_io_failed_hook = btree_io_failed_hook,
+ .set_range_writeback = btrfs_set_range_writeback,
+ .tree_fs_info = btree_fs_info,
/* optional callbacks */
};
projects / mirror_ubuntu-artful-kernel.git / blobdiff