linux-2.6.33/do_writepages()

参照元†

• linux-2.6.33/__filemap_fdatawrite_range()

説明†

• パス: linux-2.6.33/mm/page-writeback.c

• FIXME: これは何？
  • 説明

引数†

• struct address_space *mapping
  • linux-2.6.33/address_space
• struct writeback_control *wbc
  • linux-2.6.33/writeback_control

返り値†

• int

参考†

• writepages に設定される関数
• 検索方法

  $ egrep -nr '\.writepages[\s]*' fs

• 結果

  fs/afs/file.c:60:       .writepages     = afs_writepages,
  fs/block_dev.c:1470:    .writepages     = generic_writepages,
  fs/btrfs/disk-io.c:779: .writepages     = btree_writepages,
  fs/btrfs/inode.c:6005:  .writepages     = btrfs_writepages,
  fs/cifs/file.c:2350:    .writepages = cifs_writepages,
  fs/cifs/file.c:2366:    .writepages = cifs_writepages,
  fs/exofs/inode.c:760:   .writepages     = exofs_writepages,
  fs/ext2/inode.c:821:    .writepages             = ext2_writepages,
  fs/ext2/inode.c:841:    .writepages             = ext2_writepages,
  fs/ext4/inode.c:3894:   .writepages             = ext4_da_writepages,
  fs/fat/inode.c:216:     .writepages     = fat_writepages,
  fs/gfs2/aops.c:1118:    .writepages = gfs2_writeback_writepages,
  fs/gfs2/aops.c:1152:    .writepages = gfs2_jdata_writepages,
  fs/hfs/inode.c:144:     .writepages     = hfs_writepages,
  fs/hfsplus/inode.c:137: .writepages     = hfsplus_writepages,
  fs/jfs/inode.c:323:     .writepages     = jfs_writepages,
  fs/nfs/file.c:522:      .writepages = nfs_writepages,
  fs/nilfs2/inode.c:246:  .writepages             = nilfs_writepages,
  fs/omfs/file.c:344:     .writepages = omfs_writepages,
  fs/xfs/linux-2.6/xfs_aops.c:1551:       .writepages             = xfs_vm_writepages,

実装†

int do_writepages(struct address_space *mapping, struct writeback_control *wbc)
{
	int ret;

	if (wbc->nr_to_write <= 0)
		return 0;
	if (mapping->a_ops->writepages)
		ret = mapping->a_ops->writepages(mapping, wbc);

• mapping->a_ops は struct address_space_operations 型
  • linux-2.6.33/address_space_operations

	else
		ret = generic_writepages(mapping, wbc);

• • linux-2.6.33/generic_writepages()

	return ret;
}

コメント†

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