iov_iter: fix iov_iter_type
authorMing Lei <ming.lei@redhat.com>
Fri, 26 Apr 2019 10:45:21 +0000 (18:45 +0800)
committerJens Axboe <axboe@kernel.dk>
Wed, 1 May 2019 14:38:47 +0000 (08:38 -0600)
Commit 875f1d0769cd ("iov_iter: add ITER_BVEC_FLAG_NO_REF flag")
introduces one extra flag of ITER_BVEC_FLAG_NO_REF, and this flag
is stored into iter->type.

However, iov_iter_type() doesn't consider the new added flag, fix
it by masking this flag in iov_iter_type().

Fixes: 875f1d0769cd ("iov_iter: add ITER_BVEC_FLAG_NO_REF flag")
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
include/linux/uio.h

index f184af1999a8e8c9f8216eb7aa64a689889c66a6..2d0131ad46041dd8f036cc4063f2702a16f0827d 100644 (file)
@@ -60,7 +60,7 @@ struct iov_iter {
 
 static inline enum iter_type iov_iter_type(const struct iov_iter *i)
 {
-       return i->type & ~(READ | WRITE);
+       return i->type & ~(READ | WRITE | ITER_BVEC_FLAG_NO_REF);
 }
 
 static inline bool iter_is_iovec(const struct iov_iter *i)