diff options
| author | Chris Mason <chris.mason@oracle.com> | 2007-04-28 09:29:35 -0400 |
|---|---|---|
| committer | David Woodhouse <dwmw2@hera.kernel.org> | 2007-04-28 09:29:35 -0400 |
| commit | 7c4452b9a6ca7aabe37ea2e43d443110bdc08cd8 (patch) | |
| tree | 6d3db5ec3a394dfcf143869796f1c59c4e86278f /fs/btrfs/transaction.c | |
| parent | 06a2f9fa4c12a055cc396936408a78ae0acfb6b4 (diff) | |
Btrfs: smarter transaction writeback
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/transaction.c')
| -rw-r--r-- | fs/btrfs/transaction.c | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 8a2545f6a5b6..f9b8864dcc40 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -45,6 +45,7 @@ static int join_transaction(struct btrfs_root *root) cur_trans->use_count = 1; cur_trans->commit_done = 0; list_add_tail(&cur_trans->list, &root->fs_info->trans_list); + init_bit_radix(&cur_trans->dirty_pages); } cur_trans->num_writers++; return 0; @@ -106,8 +107,40 @@ int btrfs_end_transaction(struct btrfs_trans_handle *trans, int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans, struct btrfs_root *root) { - filemap_write_and_wait(root->fs_info->btree_inode->i_mapping); - return 0; + unsigned long gang[16]; + int ret; + int i; + int err; + int werr = 0; + struct page *page; + struct radix_tree_root *dirty_pages; + struct inode *btree_inode = root->fs_info->btree_inode; + + if (!trans || !trans->transaction) { + return filemap_write_and_wait(btree_inode->i_mapping); + } + dirty_pages = &trans->transaction->dirty_pages; + while(1) { + ret = find_first_radix_bit(dirty_pages, gang, ARRAY_SIZE(gang)); + if (!ret) + break; + for (i = 0; i < ret; i++) { + /* FIXME EIO */ + clear_radix_bit(dirty_pages, gang[i]); + page = find_lock_page(btree_inode->i_mapping, + gang[i]); + if (!page) + continue; + err = write_one_page(page, 0); + if (err) + werr = err; + page_cache_release(page); + } + } + err = filemap_fdatawait(btree_inode->i_mapping); + if (err) + werr = err; + return werr; } int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans, |