staging: erofs: support IO read error injection

[linux.git] / drivers / staging / erofs / unzip_vle.c

diff --git a/drivers/staging/erofs/unzip_vle.c b/drivers/staging/erofs/unzip_vle.c
index 8e720bb882c7efdd5609ae9cec8be15b2e627fb6..566835cf6f2fef1dfcddb3f9d86b0579ebfc9ca9 100644 (file)
--- a/drivers/staging/erofs/unzip_vle.c
+++ b/drivers/staging/erofs/unzip_vle.c
@@ -844,8 +844,8 @@ static void z_erofs_vle_unzip_kickoff(void *ptr, int bios)
 
 static inline void z_erofs_vle_read_endio(struct bio *bio)
 {
-       const blk_status_t err = bio->bi_status;
        struct erofs_sb_info *sbi = NULL;
+       blk_status_t err = bio->bi_status;
        unsigned int i;
        struct bio_vec *bvec;
        struct bvec_iter_all iter_all;
@@ -857,9 +857,15 @@ static inline void z_erofs_vle_read_endio(struct bio *bio)
                DBG_BUGON(PageUptodate(page));
                DBG_BUGON(!page->mapping);
 
-               if (unlikely(!sbi && !z_erofs_is_stagingpage(page)))
+               if (unlikely(!sbi && !z_erofs_is_stagingpage(page))) {
                        sbi = EROFS_SB(page->mapping->host->i_sb);
 
+                       if (time_to_inject(sbi, FAULT_READ_IO)) {
+                               erofs_show_injection_info(FAULT_READ_IO);
+                               err = BLK_STS_IOERR;
+                       }
+               }
+
                /* sbi should already be gotten if the page is managed */
                if (sbi)
                        cachemngd = erofs_page_is_managed(sbi, page);
@@ -1430,10 +1436,8 @@ static bool z_erofs_vle_submit_all(struct super_block *sb,
 
                if (!bio) {
                        bio = erofs_grab_bio(sb, first_index + i,
-                                            BIO_MAX_PAGES,
+                                            BIO_MAX_PAGES, bi_private,
                                             z_erofs_vle_read_endio, true);
-                       bio->bi_private = bi_private;
-
                        ++nr_bios;
                }