diff options
author | Radim Krčmář <rkrcmar@redhat.com> | 2018-02-01 15:04:17 +0100 |
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committer | Radim Krčmář <rkrcmar@redhat.com> | 2018-02-01 15:04:17 +0100 |
commit | 7bf14c28ee776be567855bd39ed8ff795ea19f55 (patch) | |
tree | 6113748c673e85fccc2c56c050697789c00c6bc2 /fs/btrfs/transaction.c | |
parent | 87cedc6be55954c6efd6eca2e694132513f65a2a (diff) | |
parent | 5fa4ec9cb2e6679e2f828033726f758ea314b9c5 (diff) |
Merge branch 'x86/hyperv' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Topic branch for stable KVM clockource under Hyper-V.
Thanks to Christoffer Dall for resolving the ARM conflict.
Diffstat (limited to 'fs/btrfs/transaction.c')
-rw-r--r-- | fs/btrfs/transaction.c | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 5a8c2649af2f..04f07144b45c 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -495,8 +495,8 @@ start_transaction(struct btrfs_root *root, unsigned int num_items, if (current->journal_info) { WARN_ON(type & TRANS_EXTWRITERS); h = current->journal_info; - h->use_count++; - WARN_ON(h->use_count > 2); + refcount_inc(&h->use_count); + WARN_ON(refcount_read(&h->use_count) > 2); h->orig_rsv = h->block_rsv; h->block_rsv = NULL; goto got_it; @@ -567,7 +567,7 @@ again: h->transid = cur_trans->transid; h->transaction = cur_trans; h->root = root; - h->use_count = 1; + refcount_set(&h->use_count, 1); h->fs_info = root->fs_info; h->type = type; @@ -837,8 +837,8 @@ static int __btrfs_end_transaction(struct btrfs_trans_handle *trans, int err = 0; int must_run_delayed_refs = 0; - if (trans->use_count > 1) { - trans->use_count--; + if (refcount_read(&trans->use_count) > 1) { + refcount_dec(&trans->use_count); trans->block_rsv = trans->orig_rsv; return 0; } @@ -1016,8 +1016,7 @@ static int __btrfs_wait_marked_extents(struct btrfs_fs_info *fs_info, * it's safe to do it (through clear_btree_io_tree()). */ err = clear_extent_bit(dirty_pages, start, end, - EXTENT_NEED_WAIT, - 0, 0, &cached_state, GFP_NOFS); + EXTENT_NEED_WAIT, 0, 0, &cached_state); if (err == -ENOMEM) err = 0; if (!err) @@ -1869,7 +1868,7 @@ static void cleanup_transaction(struct btrfs_trans_handle *trans, struct btrfs_transaction *cur_trans = trans->transaction; DEFINE_WAIT(wait); - WARN_ON(trans->use_count > 1); + WARN_ON(refcount_read(&trans->use_count) > 1); btrfs_abort_transaction(trans, err); @@ -2266,16 +2265,13 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans) } ret = write_all_supers(fs_info, 0); - if (ret) { - mutex_unlock(&fs_info->tree_log_mutex); - goto scrub_continue; - } - /* * the super is written, we can safely allow the tree-loggers * to go about their business */ mutex_unlock(&fs_info->tree_log_mutex); + if (ret) + goto scrub_continue; btrfs_finish_extent_commit(trans, fs_info); |