static int gfs2_jdata_writepage(struct page *page, struct writeback_control *wbc)
{
struct inode *inode = page->mapping->host;
struct gfs2_sbd *sdp = GFS2_SB(inode);
int ret;
int done_trans = 0;
if (PageChecked(page)) {
if (wbc->sync_mode != WB_SYNC_ALL)
goto out_ignore;
ret = gfs2_trans_begin(sdp, RES_DINODE + 1, 0);
if (ret)
goto out_ignore;
done_trans = 1;
}
ret = gfs2_writepage_common(page, wbc);
if (ret > 0)
ret = __gfs2_jdata_writepage(page, wbc);
if (done_trans)
gfs2_trans_end(sdp);
return ret;
out_ignore:
redirty_page_for_writepage(wbc, page);
unlock_page(page);
return 0;
}
static int gfs2_writepage(struct page *page, struct writeback_control *wbc)
{
int ret;
ret = gfs2_writepage_common(page, wbc);
if (ret <= 0)
return ret;
return nobh_writepage(page, gfs2_get_block_noalloc, wbc);
}
static int gfs2_writeback_writepage(struct page *page,
struct writeback_control *wbc)
{
int ret;
ret = gfs2_writepage_common(page, wbc);
if (ret <= 0)
return ret;
ret = mpage_writepage(page, gfs2_get_block_noalloc, wbc);
if (ret == -EAGAIN)
ret = block_write_full_page(page, gfs2_get_block_noalloc, wbc);
return ret;
}
static int gfs2_ordered_writepage(struct page *page,
struct writeback_control *wbc)
{
struct inode *inode = page->mapping->host;
struct gfs2_inode *ip = GFS2_I(inode);
int ret;
ret = gfs2_writepage_common(page, wbc);
if (ret <= 0)
return ret;
if (!page_has_buffers(page)) {
create_empty_buffers(page, inode->i_sb->s_blocksize,
(1 << BH_Dirty)|(1 << BH_Uptodate));
}
gfs2_page_add_databufs(ip, page, 0, inode->i_sb->s_blocksize-1);
return block_write_full_page(page, gfs2_get_block_noalloc, wbc);
}