diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 3ab8dea5036b651ac953de77a231d28714405fef..dabc3d0793cf4e8ec33c42a2a82d322f1a133cab 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -2697,7 +2697,7 @@ static int __btrfs_add_free_space_zoned(struct btrfs_block_group *block_group,
u64 offset = bytenr - block_group->start;
u64 to_free, to_unusable;
int bg_reclaim_threshold = 0;
- bool initial = (size == block_group->length);
+ bool initial = ((size == block_group->length) && (block_group->alloc_offset == 0));
u64 reclaimable_unusable;
WARN_ON(!initial && offset + size > block_group->zone_capacity);
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index fc2a7ea263541896ab6577612c3740e736d5bcd0..bf0f81d59b6bca0490e7539ba93a2c65f5d64035 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -1351,7 +1351,7 @@ static int flush_reservations(struct btrfs_fs_info *fs_info)
int btrfs_quota_disable(struct btrfs_fs_info *fs_info)
{
- struct btrfs_root *quota_root;
+ struct btrfs_root *quota_root = NULL;
struct btrfs_trans_handle *trans = NULL;
int ret = 0;
@@ -1449,9 +1449,9 @@ int btrfs_quota_disable(struct btrfs_fs_info *fs_info)
btrfs_free_tree_block(trans, btrfs_root_id(quota_root),
quota_root->node, 0, 1);
- btrfs_put_root(quota_root);
out:
+ btrfs_put_root(quota_root);
mutex_unlock(&fs_info->qgroup_ioctl_lock);
if (ret && trans)
btrfs_end_transaction(trans);
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index afd6932f5e895c19fcc256bd8e7b1d70f0c79e98..d7caa3732f074bde01fd0b8136d80bff2a890126 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -1688,20 +1688,24 @@ static void scrub_submit_extent_sector_read(struct scrub_ctx *sctx,
(i << fs_info->sectorsize_bits);
int err;
- bbio = btrfs_bio_alloc(stripe->nr_sectors, REQ_OP_READ,
- fs_info, scrub_read_endio, stripe);
- bbio->bio.bi_iter.bi_sector = logical >> SECTOR_SHIFT;
-
io_stripe.is_scrub = true;
+ stripe_len = (nr_sectors - i) << fs_info->sectorsize_bits;
+ /*
+ * For RST cases, we need to manually split the bbio to
+ * follow the RST boundary.
+ */
err = btrfs_map_block(fs_info, BTRFS_MAP_READ, logical,
- &stripe_len, &bioc, &io_stripe,
- &mirror);
+ &stripe_len, &bioc, &io_stripe, &mirror);
btrfs_put_bioc(bioc);
- if (err) {
- btrfs_bio_end_io(bbio,
- errno_to_blk_status(err));
- return;
+ if (err < 0) {
+ set_bit(i, &stripe->io_error_bitmap);
+ set_bit(i, &stripe->error_bitmap);
+ continue;
}
+
+ bbio = btrfs_bio_alloc(stripe->nr_sectors, REQ_OP_READ,
+ fs_info, scrub_read_endio, stripe);
+ bbio->bio.bi_iter.bi_sector = logical >> SECTOR_SHIFT;
}
__bio_add_page(&bbio->bio, page, fs_info->sectorsize, pgoff);
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 26a2e5aa08e9ca05a106849703414a1e0a55d360..0bce1d45e25267e6f7e82681de48b50e0d00b1d3 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -138,6 +138,25 @@ static void wait_log_commit(struct btrfs_root *root, int transid);
* and once to do all the other items.
*/
+static struct inode *btrfs_iget_logging(u64 objectid, struct btrfs_root *root)
+{
+ unsigned int nofs_flag;
+ struct inode *inode;
+
+ /*
+ * We're holding a transaction handle whether we are logging or
+ * replaying a log tree, so we must make sure NOFS semantics apply
+ * because btrfs_alloc_inode() may be triggered and it uses GFP_KERNEL
+ * to allocate an inode, which can recurse back into the filesystem and
+ * attempt a transaction commit, resulting in a deadlock.
+ */
+ nofs_flag = memalloc_nofs_save();
+ inode = btrfs_iget(root->fs_info->sb, objectid, root);
+ memalloc_nofs_restore(nofs_flag);
+
+ return inode;
+}
+
/*
* start a sub transaction and setup the log tree
* this increments the log tree writer count to make the people
@@ -600,7 +619,7 @@ static noinline struct inode *read_one_inode(struct btrfs_root *root,
{
struct inode *inode;
- inode = btrfs_iget(root->fs_info->sb, objectid, root);
+ inode = btrfs_iget_logging(objectid, root);
if (IS_ERR(inode))
inode = NULL;
return inode;
@@ -5438,7 +5457,6 @@ static int log_new_dir_dentries(struct btrfs_trans_handle *trans,
struct btrfs_log_ctx *ctx)
{
struct btrfs_root *root = start_inode->root;
- struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_path *path;
LIST_HEAD(dir_list);
struct btrfs_dir_list *dir_elem;
@@ -5499,7 +5517,7 @@ static int log_new_dir_dentries(struct btrfs_trans_handle *trans,
continue;
btrfs_release_path(path);
- di_inode = btrfs_iget(fs_info->sb, di_key.objectid, root);
+ di_inode = btrfs_iget_logging(di_key.objectid, root);
if (IS_ERR(di_inode)) {
ret = PTR_ERR(di_inode);
goto out;
@@ -5559,7 +5577,7 @@ static int log_new_dir_dentries(struct btrfs_trans_handle *trans,
btrfs_add_delayed_iput(curr_inode);
curr_inode = NULL;
- vfs_inode = btrfs_iget(fs_info->sb, ino, root);
+ vfs_inode = btrfs_iget_logging(ino, root);
if (IS_ERR(vfs_inode)) {
ret = PTR_ERR(vfs_inode);
break;
@@ -5654,7 +5672,7 @@ static int add_conflicting_inode(struct btrfs_trans_handle *trans,
if (ctx->num_conflict_inodes >= MAX_CONFLICT_INODES)
return BTRFS_LOG_FORCE_COMMIT;
- inode = btrfs_iget(root->fs_info->sb, ino, root);
+ inode = btrfs_iget_logging(ino, root);
/*
* If the other inode that had a conflicting dir entry was deleted in
* the current transaction then we either:
@@ -5755,7 +5773,6 @@ static int log_conflicting_inodes(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_log_ctx *ctx)
{
- struct btrfs_fs_info *fs_info = root->fs_info;
int ret = 0;
/*
@@ -5786,7 +5803,7 @@ static int log_conflicting_inodes(struct btrfs_trans_handle *trans,
list_del(&curr->list);
kfree(curr);
- inode = btrfs_iget(fs_info->sb, ino, root);
+ inode = btrfs_iget_logging(ino, root);
/*
* If the other inode that had a conflicting dir entry was
* deleted in the current transaction, we need to log its parent
@@ -5797,7 +5814,7 @@ static int log_conflicting_inodes(struct btrfs_trans_handle *trans,
if (ret != -ENOENT)
break;
- inode = btrfs_iget(fs_info->sb, parent, root);
+ inode = btrfs_iget_logging(parent, root);
if (IS_ERR(inode)) {
ret = PTR_ERR(inode);
break;
@@ -6319,7 +6336,6 @@ static int log_new_delayed_dentries(struct btrfs_trans_handle *trans,
struct btrfs_log_ctx *ctx)
{
const bool orig_log_new_dentries = ctx->log_new_dentries;
- struct btrfs_fs_info *fs_info = trans->fs_info;
struct btrfs_delayed_item *item;
int ret = 0;
@@ -6345,7 +6361,7 @@ static int log_new_delayed_dentries(struct btrfs_trans_handle *trans,
if (key.type == BTRFS_ROOT_ITEM_KEY)
continue;
- di_inode = btrfs_iget(fs_info->sb, key.objectid, inode->root);
+ di_inode = btrfs_iget_logging(key.objectid, inode->root);
if (IS_ERR(di_inode)) {
ret = PTR_ERR(di_inode);
break;
@@ -6729,7 +6745,6 @@ static int btrfs_log_all_parents(struct btrfs_trans_handle *trans,
struct btrfs_inode *inode,
struct btrfs_log_ctx *ctx)
{
- struct btrfs_fs_info *fs_info = trans->fs_info;
int ret;
struct btrfs_path *path;
struct btrfs_key key;
@@ -6794,8 +6809,7 @@ static int btrfs_log_all_parents(struct btrfs_trans_handle *trans,
cur_offset = item_size;
}
- dir_inode = btrfs_iget(fs_info->sb, inode_key.objectid,
- root);
+ dir_inode = btrfs_iget_logging(inode_key.objectid, root);
/*
* If the parent inode was deleted, return an error to
* fallback to a transaction commit. This is to prevent
@@ -6857,7 +6871,6 @@ static int log_new_ancestors(struct btrfs_trans_handle *trans,
btrfs_item_key_to_cpu(path->nodes[0], &found_key, path->slots[0]);
while (true) {
- struct btrfs_fs_info *fs_info = root->fs_info;
struct extent_buffer *leaf;
int slot;
struct btrfs_key search_key;
@@ -6872,7 +6885,7 @@ static int log_new_ancestors(struct btrfs_trans_handle *trans,
search_key.objectid = found_key.offset;
search_key.type = BTRFS_INODE_ITEM_KEY;
search_key.offset = 0;
- inode = btrfs_iget(fs_info->sb, ino, root);
+ inode = btrfs_iget_logging(ino, root);
if (IS_ERR(inode))
return PTR_ERR(inode);