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writeback: remove a use of write_cache_pages() from do_writepages()
Use the new writeback_iter() directly instead of indirecting through a callback. [hch@lst.de: ported to the while based iter style] Link: https://lkml.kernel.org/r/20240215063649.2164017-15-hch@lst.de Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Christian Brauner <brauner@kernel.org> Cc: Dave Chinner <dchinner@redhat.com> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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@ -2577,15 +2577,25 @@ int write_cache_pages(struct address_space *mapping,
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}
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EXPORT_SYMBOL(write_cache_pages);
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static int writepage_cb(struct folio *folio, struct writeback_control *wbc,
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void *data)
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static int writeback_use_writepage(struct address_space *mapping,
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struct writeback_control *wbc)
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{
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struct address_space *mapping = data;
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int ret = mapping->a_ops->writepage(&folio->page, wbc);
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struct folio *folio = NULL;
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struct blk_plug plug;
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int err;
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if (ret < 0)
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mapping_set_error(mapping, ret);
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return ret;
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blk_start_plug(&plug);
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while ((folio = writeback_iter(mapping, wbc, folio, &err))) {
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err = mapping->a_ops->writepage(&folio->page, wbc);
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if (err == AOP_WRITEPAGE_ACTIVATE) {
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folio_unlock(folio);
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err = 0;
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}
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mapping_set_error(mapping, err);
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}
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blk_finish_plug(&plug);
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return err;
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}
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int do_writepages(struct address_space *mapping, struct writeback_control *wbc)
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@ -2601,12 +2611,7 @@ int do_writepages(struct address_space *mapping, struct writeback_control *wbc)
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if (mapping->a_ops->writepages) {
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ret = mapping->a_ops->writepages(mapping, wbc);
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} else if (mapping->a_ops->writepage) {
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struct blk_plug plug;
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blk_start_plug(&plug);
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ret = write_cache_pages(mapping, wbc, writepage_cb,
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mapping);
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blk_finish_plug(&plug);
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ret = writeback_use_writepage(mapping, wbc);
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} else {
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/* deal with chardevs and other special files */
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ret = 0;
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