diff --git a/drivers/staging/erofs/unzip_vle.c b/drivers/staging/erofs/unzip_vle.c index 6aa3c989dd4e..fab907e0fe06 100644 --- a/drivers/staging/erofs/unzip_vle.c +++ b/drivers/staging/erofs/unzip_vle.c @@ -1345,8 +1345,8 @@ static int z_erofs_vle_normalaccess_readpages(struct file *filp, { struct inode *const inode = mapping->host; struct erofs_sb_info *const sbi = EROFS_I_SB(inode); - const bool sync = __should_decompress_synchronously(sbi, nr_pages); + bool sync = __should_decompress_synchronously(sbi, nr_pages); struct z_erofs_vle_frontend f = VLE_FRONTEND_INIT(inode); gfp_t gfp = mapping_gfp_constraint(mapping, GFP_KERNEL); struct page *head = NULL; @@ -1364,6 +1364,13 @@ static int z_erofs_vle_normalaccess_readpages(struct file *filp, prefetchw(&page->flags); list_del(&page->lru); + /* + * A pure asynchronous readahead is indicated if + * a PG_readahead marked page is hitted at first. + * Let's also do asynchronous decompression for this case. + */ + sync &= !(PageReadahead(page) && !head); + if (add_to_page_cache_lru(page, mapping, page->index, gfp)) { list_add(&page->lru, &pagepool); continue;