On Fri, May 27, 2022 at 04:50:26PM +0100, Matthew Wilcox (Oracle) wrote:
> read_mapping_folio() returns an ERR_PTR if the folio is not
> uptodate, so this check is simply dead code.
Looks good:
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
> /* Read a page's worth of file data into the page cache. */
> static struct folio *vfs_dedupe_get_folio(struct file *file, loff_t pos)
> {
> + return read_mapping_folio(file->f_mapping, pos >> PAGE_SHIFT, file);
> }
But I wonder if this isn't useful enough to go to filemap.c in one form
or another.
