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Diffstat (limited to 'fs/btrfs/inode.c')
-rw-r--r--fs/btrfs/inode.c52
1 files changed, 35 insertions, 17 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 53ca025655fc..f53470112670 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1335,8 +1335,11 @@ next_slot:
leaf = path->nodes[0];
if (path->slots[0] >= btrfs_header_nritems(leaf)) {
ret = btrfs_next_leaf(root, path);
- if (ret < 0)
+ if (ret < 0) {
+ if (cow_start != (u64)-1)
+ cur_offset = cow_start;
goto error;
+ }
if (ret > 0)
break;
leaf = path->nodes[0];
@@ -2040,12 +2043,15 @@ static noinline int add_pending_csums(struct btrfs_trans_handle *trans,
struct inode *inode, struct list_head *list)
{
struct btrfs_ordered_sum *sum;
+ int ret;
list_for_each_entry(sum, list, list) {
trans->adding_csums = true;
- btrfs_csum_file_blocks(trans,
+ ret = btrfs_csum_file_blocks(trans,
BTRFS_I(inode)->root->fs_info->csum_root, sum);
trans->adding_csums = false;
+ if (ret)
+ return ret;
}
return 0;
}
@@ -3059,7 +3065,11 @@ static int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent)
goto out;
}
- add_pending_csums(trans, inode, &ordered_extent->list);
+ ret = add_pending_csums(trans, inode, &ordered_extent->list);
+ if (ret) {
+ btrfs_abort_transaction(trans, ret);
+ goto out;
+ }
btrfs_ordered_update_i_size(inode, 0, ordered_extent);
ret = btrfs_update_inode_fallback(trans, root, inode);
@@ -3385,6 +3395,11 @@ int btrfs_orphan_add(struct btrfs_trans_handle *trans,
ret = btrfs_orphan_reserve_metadata(trans, inode);
ASSERT(!ret);
if (ret) {
+ /*
+ * dec doesn't need spin_lock as ->orphan_block_rsv
+ * would be released only if ->orphan_inodes is
+ * zero.
+ */
atomic_dec(&root->orphan_inodes);
clear_bit(BTRFS_INODE_ORPHAN_META_RESERVED,
&inode->runtime_flags);
@@ -3399,12 +3414,17 @@ int btrfs_orphan_add(struct btrfs_trans_handle *trans,
if (insert >= 1) {
ret = btrfs_insert_orphan_item(trans, root, btrfs_ino(inode));
if (ret) {
- atomic_dec(&root->orphan_inodes);
if (reserve) {
clear_bit(BTRFS_INODE_ORPHAN_META_RESERVED,
&inode->runtime_flags);
btrfs_orphan_release_metadata(inode);
}
+ /*
+ * btrfs_orphan_commit_root may race with us and set
+ * ->orphan_block_rsv to zero, in order to avoid that,
+ * decrease ->orphan_inodes after everything is done.
+ */
+ atomic_dec(&root->orphan_inodes);
if (ret != -EEXIST) {
clear_bit(BTRFS_INODE_HAS_ORPHAN_ITEM,
&inode->runtime_flags);
@@ -3436,28 +3456,26 @@ static int btrfs_orphan_del(struct btrfs_trans_handle *trans,
{
struct btrfs_root *root = inode->root;
int delete_item = 0;
- int release_rsv = 0;
int ret = 0;
- spin_lock(&root->orphan_lock);
if (test_and_clear_bit(BTRFS_INODE_HAS_ORPHAN_ITEM,
&inode->runtime_flags))
delete_item = 1;
+ if (delete_item && trans)
+ ret = btrfs_del_orphan_item(trans, root, btrfs_ino(inode));
+
if (test_and_clear_bit(BTRFS_INODE_ORPHAN_META_RESERVED,
&inode->runtime_flags))
- release_rsv = 1;
- spin_unlock(&root->orphan_lock);
+ btrfs_orphan_release_metadata(inode);
- if (delete_item) {
+ /*
+ * btrfs_orphan_commit_root may race with us and set ->orphan_block_rsv
+ * to zero, in order to avoid that, decrease ->orphan_inodes after
+ * everything is done.
+ */
+ if (delete_item)
atomic_dec(&root->orphan_inodes);
- if (trans)
- ret = btrfs_del_orphan_item(trans, root,
- btrfs_ino(inode));
- }
-
- if (release_rsv)
- btrfs_orphan_release_metadata(inode);
return ret;
}
@@ -5281,7 +5299,7 @@ void btrfs_evict_inode(struct inode *inode)
trace_btrfs_inode_evict(inode);
if (!root) {
- kmem_cache_free(btrfs_inode_cachep, BTRFS_I(inode));
+ clear_inode(inode);
return;
}