> 2025年7月2日 21:49，Jens Axboe <axboe@xxxxxxxxx> 写道： > > On 7/1/25 8:48 PM, colyli@xxxxxxxxxx wrote: >> From: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx> >> >> Retrieve a folio from the page cache instead of a page. Removes a >> hidden call to compound_head(). Then be sure to call folio_put() >> instead of put_page() to release it. That doesn't save any calls >> to compound_head(), just moves them around. > > Really needs a better subject line... I can do that while applying, > however. How about: > > bcache: switch from pages to folios in read_super() Yeah, this subject is good IMHO. Thanks. Coly Li
