int ret = 0;
int done = 0;
int error;
- struct pagevec pvec;
- int nr_pages;
+ struct folio_batch fbatch;
+ int nr_folios;
pgoff_t index;
pgoff_t end; /* Inclusive */
pgoff_t done_index;
int range_whole = 0;
xa_mark_t tag;
- pagevec_init(&pvec);
+ folio_batch_init(&fbatch);
if (wbc->range_cyclic) {
index = mapping->writeback_index; /* prev offset */
end = -1;
while (!done && (index <= end)) {
int i;
- nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end,
- tag);
- if (nr_pages == 0)
+ nr_folios = filemap_get_folios_tag(mapping, &index, end,
+ tag, &fbatch);
+
+ if (nr_folios == 0)
break;
- for (i = 0; i < nr_pages; i++) {
- struct page *page = pvec.pages[i];
+ for (i = 0; i < nr_folios; i++) {
+ struct folio *folio = fbatch.folios[i];
- done_index = page->index;
+ done_index = folio->index;
- lock_page(page);
+ folio_lock(folio);
/*
* Page truncated or invalidated. We can freely skip it
* even if there is now a new, dirty page at the same
* pagecache address.
*/
- if (unlikely(page->mapping != mapping)) {
+ if (unlikely(folio->mapping != mapping)) {
continue_unlock:
- unlock_page(page);
+ folio_unlock(folio);
continue;
}
- if (!PageDirty(page)) {
+ if (!folio_test_dirty(folio)) {
/* someone wrote it for us */
goto continue_unlock;
}
- if (PageWriteback(page)) {
+ if (folio_test_writeback(folio)) {
if (wbc->sync_mode != WB_SYNC_NONE)
- wait_on_page_writeback(page);
+ folio_wait_writeback(folio);
else
goto continue_unlock;
}
- BUG_ON(PageWriteback(page));
- if (!clear_page_dirty_for_io(page))
+ BUG_ON(folio_test_writeback(folio));
+ if (!folio_clear_dirty_for_io(folio))
goto continue_unlock;
trace_wbc_writepage(wbc, inode_to_bdi(mapping->host));
- error = (*writepage)(page, wbc, data);
+ error = writepage(folio, wbc, data);
if (unlikely(error)) {
/*
* Handle errors according to the type of
* the first error.
*/
if (error == AOP_WRITEPAGE_ACTIVATE) {
- unlock_page(page);
+ folio_unlock(folio);
error = 0;
} else if (wbc->sync_mode != WB_SYNC_ALL) {
ret = error;
- done_index = page->index + 1;
+ done_index = folio->index +
+ folio_nr_pages(folio);
done = 1;
break;
}
break;
}
}
- pagevec_release(&pvec);
+ folio_batch_release(&fbatch);
cond_resched();
}
}
EXPORT_SYMBOL(write_cache_pages);
-/*
- * Function used by generic_writepages to call the real writepage
- * function and set the mapping flags on error
- */
-static int __writepage(struct page *page, struct writeback_control *wbc,
- void *data)
+static int writepage_cb(struct folio *folio, struct writeback_control *wbc,
+ void *data)
{
struct address_space *mapping = data;
- int ret = mapping->a_ops->writepage(page, wbc);
+ int ret = mapping->a_ops->writepage(&folio->page, wbc);
mapping_set_error(mapping, ret);
return ret;
}
-/**
- * generic_writepages - walk the list of dirty pages of the given address space and writepage() all of them.
- * @mapping: address space structure to write
- * @wbc: subtract the number of written pages from *@wbc->nr_to_write
- *
- * This is a library function, which implements the writepages()
- * address_space_operation.
- *
- * Return: %0 on success, negative error code otherwise
- */
-int generic_writepages(struct address_space *mapping,
- struct writeback_control *wbc)
-{
- struct blk_plug plug;
- int ret;
-
- /* deal with chardevs and other special file */
- if (!mapping->a_ops->writepage)
- return 0;
-
- blk_start_plug(&plug);
- ret = write_cache_pages(mapping, wbc, __writepage, mapping);
- blk_finish_plug(&plug);
- return ret;
-}
-
-EXPORT_SYMBOL(generic_writepages);
-
int do_writepages(struct address_space *mapping, struct writeback_control *wbc)
{
int ret;
wb = inode_to_wb_wbc(mapping->host, wbc);
wb_bandwidth_estimate_start(wb);
while (1) {
- if (mapping->a_ops->writepages)
+ if (mapping->a_ops->writepages) {
ret = mapping->a_ops->writepages(mapping, wbc);
- else
- ret = generic_writepages(mapping, wbc);
- if ((ret != -ENOMEM) || (wbc->sync_mode != WB_SYNC_ALL))
+ } else if (mapping->a_ops->writepage) {
+ struct blk_plug plug;
+
+ blk_start_plug(&plug);
+ ret = write_cache_pages(mapping, wbc, writepage_cb,
+ mapping);
+ blk_finish_plug(&plug);
+ } else {
+ /* deal with chardevs and other special files */
+ ret = 0;
+ }
+ if (ret != -ENOMEM || wbc->sync_mode != WB_SYNC_ALL)
break;
/*
struct bdi_writeback *wb;
long nr = folio_nr_pages(folio);
- inode_attach_wb(inode, &folio->page);
+ inode_attach_wb(inode, folio);
wb = inode_to_wb(inode);
__lruvec_stat_mod_folio(folio, NR_FILE_DIRTY, nr);
*
* The caller must hold lock_page_memcg(). Most callers have the folio
* locked. A few have the folio blocked from truncation through other
- * means (eg zap_page_range() has it mapped and is holding the page table
+ * means (eg zap_vma_pages() has it mapped and is holding the page table
* lock). This can also be called from mark_buffer_dirty(), which I
* cannot prove is always protected against truncate.
*/
if (likely(mapping)) {
/*
- * readahead/lru_deactivate_page could remain
+ * readahead/folio_deactivate could remain
* PG_readahead/PG_reclaim due to race with folio_end_writeback
* About readahead, if the folio is written, the flags would be
* reset. So no problem.
- * About lru_deactivate_page, if the folio is redirtied,
+ * About folio_deactivate, if the folio is redirtied,
* the flag will be reset. So no problem. but if the
* folio is used by readahead it will confuse readahead
* and make it restart the size rampup process. But it's
git.samba.org / sfrench / cifs-2.6.git / blobdiff