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 <[email protected]>
---
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 <[email protected]>
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
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SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
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