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Diffstat (limited to 'fs/btrfs/disk-io.c')
-rw-r--r--fs/btrfs/disk-io.c97
1 files changed, 52 insertions, 45 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index d10c7be10f3b..7c6f0bbb54a5 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -358,16 +358,14 @@ static int btrfs_check_super_csum(struct btrfs_fs_info *fs_info,
SHASH_DESC_ON_STACK(shash, fs_info->csum_shash);
shash->tfm = fs_info->csum_shash;
- crypto_shash_init(shash);
/*
* The super_block structure does not span the whole
* BTRFS_SUPER_INFO_SIZE range, we expect that the unused space is
* filled with zeros and is included in the checksum.
*/
- crypto_shash_update(shash, raw_disk_sb + BTRFS_CSUM_SIZE,
- BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE);
- crypto_shash_final(shash, result);
+ crypto_shash_digest(shash, raw_disk_sb + BTRFS_CSUM_SIZE,
+ BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE, result);
if (memcmp(disk_sb->csum, result, btrfs_super_csum_size(disk_sb)))
return 1;
@@ -709,9 +707,7 @@ static void end_workqueue_bio(struct bio *bio)
else
wq = fs_info->endio_write_workers;
} else {
- if (unlikely(end_io_wq->metadata == BTRFS_WQ_ENDIO_DIO_REPAIR))
- wq = fs_info->endio_repair_workers;
- else if (end_io_wq->metadata == BTRFS_WQ_ENDIO_RAID56)
+ if (end_io_wq->metadata == BTRFS_WQ_ENDIO_RAID56)
wq = fs_info->endio_raid56_workers;
else if (end_io_wq->metadata)
wq = fs_info->endio_meta_workers;
@@ -980,9 +976,7 @@ static void btree_invalidatepage(struct page *page, unsigned int offset,
btrfs_warn(BTRFS_I(page->mapping->host)->root->fs_info,
"page private not zero on page %llu",
(unsigned long long)page_offset(page));
- ClearPagePrivate(page);
- set_page_private(page, 0);
- put_page(page);
+ detach_page_private(page);
}
}
@@ -1137,9 +1131,12 @@ static void __setup_root(struct btrfs_root *root, struct btrfs_fs_info *fs_info,
root->log_transid = 0;
root->log_transid_committed = -1;
root->last_log_commit = 0;
- if (!dummy)
+ if (!dummy) {
extent_io_tree_init(fs_info, &root->dirty_log_pages,
IO_TREE_ROOT_DIRTY_LOG_PAGES, NULL);
+ extent_io_tree_init(fs_info, &root->log_csum_range,
+ IO_TREE_LOG_CSUM_RANGE, NULL);
+ }
memset(&root->root_key, 0, sizeof(root->root_key));
memset(&root->root_item, 0, sizeof(root->root_item));
@@ -1277,12 +1274,13 @@ static struct btrfs_root *alloc_log_tree(struct btrfs_trans_handle *trans,
root->root_key.offset = BTRFS_TREE_LOG_OBJECTID;
/*
- * DON'T set REF_COWS for log trees
+ * DON'T set SHAREABLE bit for log trees.
*
- * log trees do not get reference counted because they go away
- * before a real commit is actually done. They do store pointers
- * to file data extents, and those reference counts still get
- * updated (along with back refs to the log tree).
+ * Log trees are not exposed to user space thus can't be snapshotted,
+ * and they go away before a real commit is actually done.
+ *
+ * They do store pointers to file data extents, and those reference
+ * counts still get updated (along with back refs to the log tree).
*/
leaf = btrfs_alloc_tree_block(trans, root, 0, BTRFS_TREE_LOG_OBJECTID,
@@ -1420,8 +1418,9 @@ static int btrfs_init_fs_root(struct btrfs_root *root)
if (ret)
goto fail;
- if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID) {
- set_bit(BTRFS_ROOT_REF_COWS, &root->state);
+ if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID &&
+ root->root_key.objectid != BTRFS_DATA_RELOC_TREE_OBJECTID) {
+ set_bit(BTRFS_ROOT_SHAREABLE, &root->state);
btrfs_check_and_init_root_item(&root->root_item);
}
@@ -1526,6 +1525,7 @@ void btrfs_free_fs_info(struct btrfs_fs_info *fs_info)
btrfs_put_root(fs_info->uuid_root);
btrfs_put_root(fs_info->free_space_root);
btrfs_put_root(fs_info->fs_root);
+ btrfs_put_root(fs_info->data_reloc_root);
btrfs_check_leaked_roots(fs_info);
btrfs_extent_buffer_leak_debug_check(fs_info);
kfree(fs_info->super_copy);
@@ -1535,35 +1535,34 @@ void btrfs_free_fs_info(struct btrfs_fs_info *fs_info)
struct btrfs_root *btrfs_get_fs_root(struct btrfs_fs_info *fs_info,
- struct btrfs_key *location,
- bool check_ref)
+ u64 objectid, bool check_ref)
{
struct btrfs_root *root;
struct btrfs_path *path;
struct btrfs_key key;
int ret;
- if (location->objectid == BTRFS_ROOT_TREE_OBJECTID)
+ if (objectid == BTRFS_ROOT_TREE_OBJECTID)
return btrfs_grab_root(fs_info->tree_root);
- if (location->objectid == BTRFS_EXTENT_TREE_OBJECTID)
+ if (objectid == BTRFS_EXTENT_TREE_OBJECTID)
return btrfs_grab_root(fs_info->extent_root);
- if (location->objectid == BTRFS_CHUNK_TREE_OBJECTID)
+ if (objectid == BTRFS_CHUNK_TREE_OBJECTID)
return btrfs_grab_root(fs_info->chunk_root);
- if (location->objectid == BTRFS_DEV_TREE_OBJECTID)
+ if (objectid == BTRFS_DEV_TREE_OBJECTID)
return btrfs_grab_root(fs_info->dev_root);
- if (location->objectid == BTRFS_CSUM_TREE_OBJECTID)
+ if (objectid == BTRFS_CSUM_TREE_OBJECTID)
return btrfs_grab_root(fs_info->csum_root);
- if (location->objectid == BTRFS_QUOTA_TREE_OBJECTID)
+ if (objectid == BTRFS_QUOTA_TREE_OBJECTID)
return btrfs_grab_root(fs_info->quota_root) ?
fs_info->quota_root : ERR_PTR(-ENOENT);
- if (location->objectid == BTRFS_UUID_TREE_OBJECTID)
+ if (objectid == BTRFS_UUID_TREE_OBJECTID)
return btrfs_grab_root(fs_info->uuid_root) ?
fs_info->uuid_root : ERR_PTR(-ENOENT);
- if (location->objectid == BTRFS_FREE_SPACE_TREE_OBJECTID)
+ if (objectid == BTRFS_FREE_SPACE_TREE_OBJECTID)
return btrfs_grab_root(fs_info->free_space_root) ?
fs_info->free_space_root : ERR_PTR(-ENOENT);
again:
- root = btrfs_lookup_fs_root(fs_info, location->objectid);
+ root = btrfs_lookup_fs_root(fs_info, objectid);
if (root) {
if (check_ref && btrfs_root_refs(&root->root_item) == 0) {
btrfs_put_root(root);
@@ -1572,7 +1571,10 @@ again:
return root;
}
- root = btrfs_read_tree_root(fs_info->tree_root, location);
+ key.objectid = objectid;
+ key.type = BTRFS_ROOT_ITEM_KEY;
+ key.offset = (u64)-1;
+ root = btrfs_read_tree_root(fs_info->tree_root, &key);
if (IS_ERR(root))
return root;
@@ -1592,7 +1594,7 @@ again:
}
key.objectid = BTRFS_ORPHAN_OBJECTID;
key.type = BTRFS_ORPHAN_ITEM_KEY;
- key.offset = location->objectid;
+ key.offset = objectid;
ret = btrfs_search_slot(NULL, fs_info->tree_root, &key, path, 0, 0);
btrfs_free_path(path);
@@ -1942,7 +1944,6 @@ static void btrfs_stop_all_workers(struct btrfs_fs_info *fs_info)
btrfs_destroy_workqueue(fs_info->workers);
btrfs_destroy_workqueue(fs_info->endio_workers);
btrfs_destroy_workqueue(fs_info->endio_raid56_workers);
- btrfs_destroy_workqueue(fs_info->endio_repair_workers);
btrfs_destroy_workqueue(fs_info->rmw_workers);
btrfs_destroy_workqueue(fs_info->endio_write_workers);
btrfs_destroy_workqueue(fs_info->endio_freespace_worker);
@@ -1983,6 +1984,7 @@ static void free_root_pointers(struct btrfs_fs_info *info, bool free_chunk_root)
free_root_extent_buffers(info->quota_root);
free_root_extent_buffers(info->uuid_root);
free_root_extent_buffers(info->fs_root);
+ free_root_extent_buffers(info->data_reloc_root);
if (free_chunk_root)
free_root_extent_buffers(info->chunk_root);
free_root_extent_buffers(info->free_space_root);
@@ -1995,6 +1997,7 @@ void btrfs_put_root(struct btrfs_root *root)
if (refcount_dec_and_test(&root->refs)) {
WARN_ON(!RB_EMPTY_ROOT(&root->inode_tree));
+ WARN_ON(test_bit(BTRFS_ROOT_DEAD_RELOC_TREE, &root->state));
if (root->anon_dev)
free_anon_bdev(root->anon_dev);
btrfs_drew_lock_destroy(&root->snapshot_lock);
@@ -2145,8 +2148,6 @@ static int btrfs_init_workqueues(struct btrfs_fs_info *fs_info,
fs_info->endio_raid56_workers =
btrfs_alloc_workqueue(fs_info, "endio-raid56", flags,
max_active, 4);
- fs_info->endio_repair_workers =
- btrfs_alloc_workqueue(fs_info, "endio-repair", flags, 1, 0);
fs_info->rmw_workers =
btrfs_alloc_workqueue(fs_info, "rmw", flags, max_active, 2);
fs_info->endio_write_workers =
@@ -2170,7 +2171,6 @@ static int btrfs_init_workqueues(struct btrfs_fs_info *fs_info,
fs_info->flush_workers &&
fs_info->endio_workers && fs_info->endio_meta_workers &&
fs_info->endio_meta_write_workers &&
- fs_info->endio_repair_workers &&
fs_info->endio_write_workers && fs_info->endio_raid56_workers &&
fs_info->endio_freespace_worker && fs_info->rmw_workers &&
fs_info->caching_workers && fs_info->readahead_workers &&
@@ -2292,6 +2292,19 @@ static int btrfs_read_roots(struct btrfs_fs_info *fs_info)
set_bit(BTRFS_ROOT_TRACK_DIRTY, &root->state);
fs_info->csum_root = root;
+ /*
+ * This tree can share blocks with some other fs tree during relocation
+ * and we need a proper setup by btrfs_get_fs_root
+ */
+ root = btrfs_get_fs_root(tree_root->fs_info,
+ BTRFS_DATA_RELOC_TREE_OBJECTID, true);
+ if (IS_ERR(root)) {
+ ret = PTR_ERR(root);
+ goto out;
+ }
+ set_bit(BTRFS_ROOT_TRACK_DIRTY, &root->state);
+ fs_info->data_reloc_root = root;
+
location.objectid = BTRFS_QUOTA_TREE_OBJECTID;
root = btrfs_read_tree_root(tree_root, &location);
if (!IS_ERR(root)) {
@@ -2829,7 +2842,6 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device
u64 generation;
u64 features;
u16 csum_type;
- struct btrfs_key location;
struct btrfs_super_block *disk_super;
struct btrfs_fs_info *fs_info = btrfs_sb(sb);
struct btrfs_root *tree_root;
@@ -3243,11 +3255,7 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device
}
}
- location.objectid = BTRFS_FS_TREE_OBJECTID;
- location.type = BTRFS_ROOT_ITEM_KEY;
- location.offset = 0;
-
- fs_info->fs_root = btrfs_get_fs_root(fs_info, &location, true);
+ fs_info->fs_root = btrfs_get_fs_root(fs_info, BTRFS_FS_TREE_OBJECTID, true);
if (IS_ERR(fs_info->fs_root)) {
err = PTR_ERR(fs_info->fs_root);
btrfs_warn(fs_info, "failed to read fs tree: %d", err);
@@ -3510,10 +3518,9 @@ static int write_dev_supers(struct btrfs_device *device,
btrfs_set_super_bytenr(sb, bytenr);
- crypto_shash_init(shash);
- crypto_shash_update(shash, (const char *)sb + BTRFS_CSUM_SIZE,
- BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE);
- crypto_shash_final(shash, sb->csum);
+ crypto_shash_digest(shash, (const char *)sb + BTRFS_CSUM_SIZE,
+ BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE,
+ sb->csum);
page = find_or_create_page(mapping, bytenr >> PAGE_SHIFT,
GFP_NOFS);