[PATCH v2 05/14] isofs: replace ll_rw_block()

Zhang Yi
2022-09-01T13:29:09Z

ll_rw_block() is not safe for the sync read path because it cannot
guarantee that submitting read IO if the buffer has been locked. We
could get false positive EIO return from zisofs_uncompress_block() if
he buffer has been locked by others. So stop using ll_rw_block(),
switch to sync helper instead.

Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
---
fs/isofs/compress.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/isofs/compress.c b/fs/isofs/compress.c
index b466172eec25..59b03d74ecbe 100644
--- a/fs/isofs/compress.c
+++ b/fs/isofs/compress.c
@@ -82,7 +82,7 @@ static loff_t zisofs_uncompress_block(struct inode *inode, loff_t block_start,
return 0;
}
haveblocks = isofs_get_blocks(inode, blocknum, bhs, needblocks);
- ll_rw_block(REQ_OP_READ, haveblocks, bhs);
+ bh_read_batch(haveblocks, bhs);

curbh = 0;
curpage = 0;
--
2.31.1