2
edits
Changes
New page: > +int cr_kwrite(struct cr_ctx *ctx, void *buf, int count) > +{ > + mm_segment_t oldfs; > + int ret; > + > + oldfs = get_fs(); > + set_fs(KERNEL_DS); > + ret = cr_uwri...
> +int cr_kwrite(struct cr_ctx *ctx, void *buf, int count)
> +{
> + mm_segment_t oldfs;
> + int ret;
> +
> + oldfs = get_fs();
> + set_fs(KERNEL_DS);
> + ret = cr_uwrite(ctx, buf, count);
> + set_fs(oldfs);
> +
> + return ret;
> +}
get_fs()/set_fs() always feels a bit ouch, and this way you have
to use __force to avoid the warnings about __user pointer casts
in sparse.
I wonder if you can use splice_read/splice_write to get around
this problem.