linux-2.6.33/__filemap_fdatawrite_range() の履歴(No.1)

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• 差分 を表示
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• linux-2.6.33/__filemap_fdatawrite_range() へ行く。
  • 1 (2010-07-05 (月) 14:16:16)

参照元†

• linux-2.6.33/filemap_write_and_wait_range()

説明†

• パス: linux-2.6.33/mm/filemap.c

• FIXME: これは何？
  • 説明

引数†

• struct address_space *mapping
  • linux-2.6.33/address_space
• loff_t start
• loff_t end
• int sync_mode

返り値†

• int

参考†

実装†

/**
 * __filemap_fdatawrite_range - start writeback on mapping dirty pages in range
 * @mapping:	address space structure to write
 * @start:	offset in bytes where the range starts
 * @end:	offset in bytes where the range ends (inclusive)
 * @sync_mode:	enable synchronous operation
 *
 * Start writeback against all of a mapping's dirty pages that lie
 * within the byte offsets <start, end> inclusive.
 *
 * If sync_mode is WB_SYNC_ALL then this is a "data integrity" operation, as
 * opposed to a regular memory cleansing writeback.  The difference between
 * these two operations is that if a dirty page/buffer is encountered, it must
 * be waited upon, and not just skipped over.
 */
int __filemap_fdatawrite_range(struct address_space *mapping, loff_t start,
				loff_t end, int sync_mode)
{
	int ret;
	struct writeback_control wbc = {
		.sync_mode = sync_mode,
		.nr_to_write = LONG_MAX,
		.range_start = start,
		.range_end = end,
	};

	if (!mapping_cap_writeback_dirty(mapping))
		return 0;

• • linux-2.6.33/mapping_cap_writeback_dirty()

	ret = do_writepages(mapping, &wbc);

• • linux-2.6.33/do_writepages()

	return ret;
}

コメント†