block: use unitialized_var() in bio_alloc_bioset()



Better than setting idx to some random value and it silences the
same bogus gcc warning.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

parent 28f13702

fs/bio.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -158,7 +158,7 @@ struct bio bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set bs)

		bio_init(bio);
		if (likely(nr_iovecs)) {
		unsigned long idx = 0; /* shut up gcc */
		unsigned long uninitialized_var(idx);

		bvl = bvec_alloc_bs(gfp_mask, nr_iovecs, &idx, bs);
		if (unlikely(!bvl)) {