Only call bi_end_io once for any bio
Currently bi_end_io can be called multiple times as sub-requests
complete. However no ->bi_end_io function wants to know about that.
So only call when the bio is complete.
Signed-off-by: Neil Brown <neilb@suse.de>
### Diffstat output
./fs/bio.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff .prev/fs/bio.c ./fs/bio.c
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/fs/bio.c b/fs/bio.c
index 29a44c1..5720b94 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -1018,6 +1018,8 @@
{
if (error)
clear_bit(BIO_UPTODATE, &bio->bi_flags);
+ else if (!test_bit(BIO_UPTODATE, &bio->bi_flags))
+ error = -EIO;
if (unlikely(bytes_done > bio->bi_size)) {
printk("%s: want %u bytes done, only %u left\n", __FUNCTION__,
@@ -1028,7 +1030,7 @@
bio->bi_size -= bytes_done;
bio->bi_sector += (bytes_done >> 9);
- if (bio->bi_end_io)
+ if (bio->bi_size && bio->bi_end_io)
bio->bi_end_io(bio, bytes_done, error);
}