On 8/5/19 8:37 PM, Jackie Liu wrote: > When pret is less than or equal to 0, put_user_pages can be > processed correctly. > > Signed-off-by: Jackie Liu <liuyun01@xxxxxxxxxx> > --- > fs/io_uring.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/fs/io_uring.c b/fs/io_uring.c > index 8a1de5a..be1e010 100644 > --- a/fs/io_uring.c > +++ b/fs/io_uring.c > @@ -2959,8 +2959,7 @@ static int io_sqe_buffer_register(struct io_ring_ctx *ctx, void __user *arg, > * if we did partial map, or found file backed vmas, > * release any pages we did get > */ > - if (pret > 0) > - put_user_pages(pages, pret); > + put_user_pages(pages, pret); Let's not do this, it's confusing and someone reviewing this code would have to look it up every time. It's not in a hot path either. -- Jens Axboe
