On 4/3/19 11:15 AM, Johannes Thumshirn wrote:
With the introduction of BIO_NO_PAGE_REF we've used up all available bits in bio::bi_flags. Convert the defines of the flags to an enum and add a BUILD_BUG_ON() call to make sure no-one adds a new one and thus overrides the BVEC_POOL_IDX causing crashes. Signed-off-by: Johannes Thumshirn <jthumshirn@xxxxxxx> --- This used to be part of my bio patchset but as it's a) not clear why we end up calling bio_put() on the on-stack bio and b) the needed prep patch for the fix introduces a regression, I've decided to sent this patch out as it's valid on it's own. I dropped Hannes' and Christoph's R-b though, as the context changed. --- block/bio.c | 3 +++ include/linux/blk_types.h | 29 ++++++++++++++++------------- 2 files changed, 19 insertions(+), 13 deletions(-)
Reviewed-by: Hannes Reinecke <hare@xxxxxxxx> Cheers, Hannes -- Dr. Hannes Reinecke Teamlead Storage & Networking hare@xxxxxxx +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Felix Imendörffer, Mary Higgins, Sri Rasiah HRB 21284 (AG Nürnberg)
