f2fs: set fsync mark only for the last dnode
In order to give atomic writes, we should consider power failure during sync_node_pages in fsync. So, this patch marks fsync flag only in the last dnode block. Acked-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim
parent
c267ec1526
commit
608514deba
@ -159,7 +159,6 @@ struct fsync_inode_entry {
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struct inode *inode; /* vfs inode pointer */
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block_t blkaddr; /* block address locating the last fsync */
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block_t last_dentry; /* block address locating the last dentry */
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block_t last_inode; /* block address locating the last inode */
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};
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#define nats_in_cursum(jnl) (le16_to_cpu(jnl->n_nats))
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@ -1784,7 +1783,8 @@ void ra_node_page(struct f2fs_sb_info *, nid_t);
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struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
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struct page *get_node_page_ra(struct page *, int);
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void sync_inode_page(struct dnode_of_data *);
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int fsync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
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int fsync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *,
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bool);
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int sync_node_pages(struct f2fs_sb_info *, struct writeback_control *);
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bool alloc_nid(struct f2fs_sb_info *, nid_t *);
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void alloc_nid_done(struct f2fs_sb_info *, nid_t);
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@ -182,7 +182,8 @@ static void try_to_fix_pino(struct inode *inode)
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}
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}
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int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
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static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
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int datasync, bool atomic)
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{
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struct inode *inode = file->f_mapping->host;
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struct f2fs_inode_info *fi = F2FS_I(inode);
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@ -256,7 +257,7 @@ go_write:
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goto out;
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}
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sync_nodes:
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ret = fsync_node_pages(sbi, ino, &wbc);
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ret = fsync_node_pages(sbi, ino, &wbc, atomic);
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if (ret)
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goto out;
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@ -290,6 +291,11 @@ out:
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return ret;
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}
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int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
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{
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return f2fs_do_sync_file(file, start, end, datasync, false);
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}
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static pgoff_t __get_first_dirty_index(struct address_space *mapping,
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pgoff_t pgofs, int whence)
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{
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@ -1407,7 +1413,7 @@ static int f2fs_ioc_commit_atomic_write(struct file *filp)
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}
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}
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ret = f2fs_sync_file(filp, 0, LLONG_MAX, 0);
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ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
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err_out:
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mnt_drop_write_file(filp);
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return ret;
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@ -1465,7 +1471,7 @@ static int f2fs_ioc_abort_volatile_write(struct file *filp)
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drop_inmem_pages(inode);
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if (f2fs_is_volatile_file(inode)) {
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clear_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE);
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ret = f2fs_sync_file(filp, 0, LLONG_MAX, 0);
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ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
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}
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mnt_drop_write_file(filp);
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112
fs/f2fs/node.c
112
fs/f2fs/node.c
@ -1222,12 +1222,11 @@ iput_out:
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iput(inode);
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}
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int fsync_node_pages(struct f2fs_sb_info *sbi, nid_t ino,
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struct writeback_control *wbc)
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static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino)
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{
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pgoff_t index, end;
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struct pagevec pvec;
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int ret = 0;
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struct page *last_page = NULL;
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pagevec_init(&pvec, 0);
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index = 0;
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@ -1245,8 +1244,9 @@ int fsync_node_pages(struct f2fs_sb_info *sbi, nid_t ino,
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struct page *page = pvec.pages[i];
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if (unlikely(f2fs_cp_error(sbi))) {
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f2fs_put_page(last_page, 0);
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pagevec_release(&pvec);
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return -EIO;
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return ERR_PTR(-EIO);
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}
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if (!IS_DNODE(page) || !is_cold_node(page))
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@ -1269,28 +1269,118 @@ continue_unlock:
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goto continue_unlock;
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}
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f2fs_wait_on_page_writeback(page, NODE, true);
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BUG_ON(PageWriteback(page));
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if (!clear_page_dirty_for_io(page))
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if (last_page)
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f2fs_put_page(last_page, 0);
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get_page(page);
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last_page = page;
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unlock_page(page);
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}
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pagevec_release(&pvec);
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cond_resched();
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}
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return last_page;
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}
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int fsync_node_pages(struct f2fs_sb_info *sbi, nid_t ino,
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struct writeback_control *wbc, bool atomic)
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{
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pgoff_t index, end;
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struct pagevec pvec;
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int ret = 0;
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struct page *last_page = NULL;
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bool marked = false;
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if (atomic) {
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last_page = last_fsync_dnode(sbi, ino);
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if (IS_ERR_OR_NULL(last_page))
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return PTR_ERR_OR_ZERO(last_page);
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}
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retry:
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pagevec_init(&pvec, 0);
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index = 0;
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end = ULONG_MAX;
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while (index <= end) {
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int i, nr_pages;
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nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index,
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PAGECACHE_TAG_DIRTY,
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min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1);
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if (nr_pages == 0)
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break;
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for (i = 0; i < nr_pages; i++) {
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struct page *page = pvec.pages[i];
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if (unlikely(f2fs_cp_error(sbi))) {
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f2fs_put_page(last_page, 0);
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pagevec_release(&pvec);
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return -EIO;
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}
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if (!IS_DNODE(page) || !is_cold_node(page))
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continue;
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if (ino_of_node(page) != ino)
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continue;
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lock_page(page);
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if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
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continue_unlock:
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unlock_page(page);
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continue;
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}
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if (ino_of_node(page) != ino)
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goto continue_unlock;
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set_fsync_mark(page, 1);
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if (IS_INODE(page))
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set_dentry_mark(page,
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if (!PageDirty(page) && page != last_page) {
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/* someone wrote it for us */
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goto continue_unlock;
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}
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f2fs_wait_on_page_writeback(page, NODE, true);
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BUG_ON(PageWriteback(page));
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if (!atomic || page == last_page) {
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set_fsync_mark(page, 1);
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if (IS_INODE(page))
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set_dentry_mark(page,
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need_dentry_mark(sbi, ino));
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/* may be written by other thread */
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if (!PageDirty(page))
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set_page_dirty(page);
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}
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if (!clear_page_dirty_for_io(page))
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goto continue_unlock;
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ret = NODE_MAPPING(sbi)->a_ops->writepage(page, wbc);
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if (ret) {
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unlock_page(page);
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f2fs_put_page(last_page, 0);
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break;
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}
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if (page == last_page) {
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f2fs_put_page(page, 0);
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marked = true;
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break;
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}
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}
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pagevec_release(&pvec);
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cond_resched();
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if (ret)
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if (ret || marked)
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break;
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}
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if (!ret && atomic && !marked) {
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f2fs_msg(sbi->sb, KERN_DEBUG,
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"Retry to write fsync mark: ino=%u, idx=%lx",
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ino, last_page->index);
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lock_page(last_page);
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set_page_dirty(last_page);
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unlock_page(last_page);
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goto retry;
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}
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return ret ? -EIO: 0;
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}
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@ -257,11 +257,8 @@ static int find_fsync_dnodes(struct f2fs_sb_info *sbi, struct list_head *head)
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}
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entry->blkaddr = blkaddr;
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if (IS_INODE(page)) {
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entry->last_inode = blkaddr;
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if (is_dent_dnode(page))
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entry->last_dentry = blkaddr;
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}
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if (IS_INODE(page) && is_dent_dnode(page))
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entry->last_dentry = blkaddr;
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next:
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/* check next segment */
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blkaddr = next_blkaddr_of_node(page);
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@ -521,7 +518,7 @@ static int recover_data(struct f2fs_sb_info *sbi, struct list_head *head)
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* In this case, we can lose the latest inode(x).
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* So, call recover_inode for the inode update.
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*/
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if (entry->last_inode == blkaddr)
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if (IS_INODE(page))
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recover_inode(entry->inode, page);
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if (entry->last_dentry == blkaddr) {
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err = recover_dentry(entry->inode, page);
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