diff options
| -rw-r--r-- | fs/btrfs/file.c | 35 | ||||
| -rw-r--r-- | fs/btrfs/inode.c | 42 |
2 files changed, 48 insertions, 29 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index c56088e..20452c1 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1464,6 +1464,24 @@ out: return written ? written : err; } +static void update_time_for_write(struct inode *inode) +{ + struct timespec now; + + if (IS_NOCMTIME(inode)) + return; + + now = current_fs_time(inode->i_sb); + if (!timespec_equal(&inode->i_mtime, &now)) + inode->i_mtime = now; + + if (!timespec_equal(&inode->i_ctime, &now)) + inode->i_ctime = now; + + if (IS_I_VERSION(inode)) + inode_inc_iversion(inode); +} + static ssize_t btrfs_file_aio_write(struct kiocb *iocb, const struct iovec *iov, unsigned long nr_segs, loff_t pos) @@ -1519,11 +1537,13 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb, goto out; } - err = file_update_time(file); - if (err) { - mutex_unlock(&inode->i_mutex); - goto out; - } + /* + * We reserve space for updating the inode when we reserve space for the + * extent we are going to write, so we will enospc out there. We don't + * need to start yet another transaction to update the inode as we will + * update the inode when we finish writing whatever data we write. + */ + update_time_for_write(inode); start_pos = round_down(pos, root->sectorsize); if (start_pos > i_size_read(inode)) { @@ -1563,8 +1583,13 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb, * this will either be one more than the running transaction * or the generation used for the next transaction if there isn't * one running right now. + * + * We also have to set last_sub_trans to the current log transid, + * otherwise subsequent syncs to a file that's been synced in this + * transaction will appear to have already occured. */ BTRFS_I(inode)->last_trans = root->fs_info->generation + 1; + BTRFS_I(inode)->last_sub_trans = root->log_transid; if (num_written > 0 || num_written == -EIOCBQUEUED) { err = generic_write_sync(file, pos, num_written); if (err < 0 && num_written > 0) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 355a297..1673dbd 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -1922,22 +1922,20 @@ static int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent) if (test_bit(BTRFS_ORDERED_NOCOW, &ordered_extent->flags)) { BUG_ON(!list_empty(&ordered_extent->list)); /* Logic error */ - ret = btrfs_ordered_update_i_size(inode, 0, ordered_extent); - if (!ret) { - if (nolock) - trans = btrfs_join_transaction_nolock(root); - else - trans = btrfs_join_transaction(root); - if (IS_ERR(trans)) { - ret = PTR_ERR(trans); - trans = NULL; - goto out; - } - trans->block_rsv = &root->fs_info->delalloc_block_rsv; - ret = btrfs_update_inode_fallback(trans, root, inode); - if (ret) /* -ENOMEM or corruption */ - btrfs_abort_transaction(trans, root, ret); + btrfs_ordered_update_i_size(inode, 0, ordered_extent); + if (nolock) + trans = btrfs_join_transaction_nolock(root); + else + trans = btrfs_join_transaction(root); + if (IS_ERR(trans)) { + ret = PTR_ERR(trans); + trans = NULL; + goto out; } + trans->block_rsv = &root->fs_info->delalloc_block_rsv; + ret = btrfs_update_inode_fallback(trans, root, inode); + if (ret) /* -ENOMEM or corruption */ + btrfs_abort_transaction(trans, root, ret); goto out; } @@ -1986,15 +1984,11 @@ static int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent) add_pending_csums(trans, inode, ordered_extent->file_offset, &ordered_extent->list); - ret = btrfs_ordered_update_i_size(inode, 0, ordered_extent); - if (!ret || !test_bit(BTRFS_ORDERED_PREALLOC, &ordered_extent->flags)) { - ret = btrfs_update_inode_fallback(trans, root, inode); - if (ret) { /* -ENOMEM or corruption */ - btrfs_abort_transaction(trans, root, ret); - goto out_unlock; - } - } else { - btrfs_set_inode_last_trans(trans, inode); + btrfs_ordered_update_i_size(inode, 0, ordered_extent); + ret = btrfs_update_inode_fallback(trans, root, inode); + if (ret) { /* -ENOMEM or corruption */ + btrfs_abort_transaction(trans, root, ret); + goto out_unlock; } ret = 0; out_unlock: |