Commit a3df2e45 authored by Jens Axboe's avatar Jens Axboe
Browse files

block: add a BUILD_BUG_ON() for adding more bio flags than we have space 



We have BIO_FLAG_LAST in the enum for bio specific flags, but it's
not used to check that we're not exceeding the size of them. Add
such a check.

Reviewed-by: default avatarDamien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent c9c77418

block/bio.c

+2 −0
Original line number Original line Diff line number Diff line
@@ -1792,6 +1792,8 @@ static int __init init_bio(void) 
{

{

	int i;

	int i;





	BUILD_BUG_ON(BIO_FLAG_LAST > 8 * sizeof_field(struct bio, bi_flags));



	bio_integrity_init();

	bio_integrity_init();





	for (i = 0; i < ARRAY_SIZE(bvec_slabs); i++) {

	for (i = 0; i < ARRAY_SIZE(bvec_slabs); i++) {