diff options
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/inode.c | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 7923336ecf94..24518b57733e 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -2043,11 +2043,12 @@ static int ext4_bh_unmapped_or_delay(handle_t *handle, struct buffer_head *bh) return !buffer_mapped(bh) || buffer_delay(bh); } -/* FIXME!! only support data=writeback mode */ /* * get called vi ext4_da_writepages after taking page lock * We may end up doing block allocation here in case * mpage_da_map_blocks failed to allocate blocks. + * + * We also get called via journal_submit_inode_data_buffers */ static int ext4_da_writepage(struct page *page, struct writeback_control *wbc) @@ -2066,6 +2067,7 @@ static int ext4_da_writepage(struct page *page, * ext4_da_writepages() but directly (shrink_page_list). * We cannot easily start a transaction here so we just skip * writing the page in case we would have to do so. + * We reach here also via journal_submit_inode_data_buffers */ size = i_size_read(inode); @@ -2081,8 +2083,11 @@ static int ext4_da_writepage(struct page *page, * We can't do block allocation under * page lock without a handle . So redirty * the page and return + * We may reach here when we do a journal commit + * via journal_submit_inode_data_buffers. + * If we don't have mapping block we just ignore + * them */ - BUG_ON(wbc->sync_mode != WB_SYNC_NONE); redirty_page_for_writepage(wbc, page); unlock_page(page); return 0; @@ -2097,7 +2102,6 @@ static int ext4_da_writepage(struct page *page, return ret; } - /* * For now just follow the DIO way to estimate the max credits * needed to write out EXT4_MAX_WRITEBACK_PAGES. @@ -2130,7 +2134,7 @@ static int ext4_da_writepages(struct address_space *mapping, return 0; /* - * Estimate the worse case needed credits to write out + * Estimate the worse case needed credits to write out * EXT4_MAX_BUF_BLOCKS pages */ needed_blocks = EXT4_MAX_WRITEBACK_CREDITS; @@ -2152,6 +2156,19 @@ static int ext4_da_writepages(struct address_space *mapping, ret = PTR_ERR(handle); goto out_writepages; } + if (ext4_should_order_data(inode)) { + /* + * With ordered mode we need to add + * the inode to the journal handle + * when we do block allocation. + */ + ret = ext4_jbd2_file_inode(handle, inode); + if (ret) { + ext4_journal_stop(handle); + goto out_writepages; + } + + } /* * set the max dirty pages could be write at a time * to fit into the reserved transaction credits @@ -2735,7 +2752,10 @@ static const struct address_space_operations ext4_da_aops = { void ext4_set_aops(struct inode *inode) { - if (ext4_should_order_data(inode)) + if (ext4_should_order_data(inode) && + test_opt(inode->i_sb, DELALLOC)) + inode->i_mapping->a_ops = &ext4_da_aops; + else if (ext4_should_order_data(inode)) inode->i_mapping->a_ops = &ext4_ordered_aops; else if (ext4_should_writeback_data(inode) && test_opt(inode->i_sb, DELALLOC)) |