linux-dev/block/bio.c, branch linus/master

block: remove bioset_init_from_src

2022-06-08T18:04:14Z

Unused now, and the interface never really made a whole lot of sense to start with. Signed-off-by: Christoph Hellwig Signed-off-by: Mike Snitzer

block: make bioset_exit() fully resilient against being called twice

2022-05-29T13:36:31Z

Most of bioset_exit() is fine being called twice, as it clears the various allocations etc when they are freed. The exception is bio_alloc_cache_destroy(), which does not clear ->cache when it has freed it. This isn't necessarily a bug, but can be if buggy users does call the exit path more then once, or with just a memset() bioset which has never been initialized. dm appears to be one such user. Fixes: be4d234d7aeb ("bio: add allocation cache abstraction") Link: https://lore.kernel.org/linux-block/YpK7m+14A+pZKs5k@casper.infradead.org/ Reported-by: Matthew Wilcox Signed-off-by: Jens Axboe

block: take destination bvec offsets into account in bio_copy_data_iter

2022-05-28T02:35:55Z

Appartly bcache can copy into bios that do not just contain fresh pages but can have offsets into the bio_vecs. Restore support for tht in bio_copy_data_iter. Fixes: f8b679a070c5 ("block: rewrite bio_copy_data_iter to use bvec_kmap_local and memcpy_to_bvec") Signed-off-by: Christoph Hellwig Link: https://lore.kernel.org/r/20220524143919.1155501-1-hch@lst.de Signed-off-by: Jens Axboe

block: allow passing a NULL bdev to bio_alloc_clone/bio_init_clone

2022-05-05T00:29:52Z

Device mapper wants to allocate a bio before knowing the device it gets send to, so add explicit support for that. Signed-off-by: Christoph Hellwig Reviewed-by: Mike Snitzer Link: https://lore.kernel.org/r/20220504142950.567582-3-hch@lst.de Signed-off-by: Jens Axboe

block: remove superfluous calls to blkcg_bio_issue_init

2022-05-05T00:29:52Z

blkcg_bio_issue_init is called in submit_bio. There is no need to have extra calls that just get overriden in __bio_clone and the two places that copy and pasted from it. Signed-off-by: Christoph Hellwig Reviewed-by: Mike Snitzer Link: https://lore.kernel.org/r/20220504142950.567582-2-hch@lst.de Signed-off-by: Jens Axboe

block: turn bio_kmalloc into a simple kmalloc wrapper

2022-04-18T01:30:41Z

Remove the magic autofree semantics and require the callers to explicitly call bio_init to initialize the bio. This allows bio_free to catch accidental bio_put calls on bio_init()ed bios as well. Signed-off-by: Christoph Hellwig Acked-by: Coly Li Acked-by: Mike Snitzer Link: https://lore.kernel.org/r/20220406061228.410163-5-hch@lst.de Signed-off-by: Jens Axboe

block: allow use of per-cpu bio alloc cache by block drivers

2022-04-17T22:49:40Z

Refine per-cpu bio alloc cache interfaces so that DM and other block drivers can properly create and use the cache: DM uses bioset_init_from_src() to do its final bioset initialization, so must update bioset_init_from_src() to set BIOSET_PERCPU_CACHE if %src bioset has a cache. Also move bio_clear_polled() to include/linux/bio.h to allow users outside of block core. Signed-off-by: Mike Snitzer Reviewed-by: Christoph Hellwig Link: https://lore.kernel.org/r/20220324203526.62306-3-snitzer@kernel.org Signed-off-by: Jens Axboe

block: allow using the per-cpu bio cache from bio_alloc_bioset

2022-04-17T22:49:40Z

Replace the BIO_PERCPU_CACHE bio-internal flag with a REQ_ALLOC_CACHE one that can be passed to bio_alloc / bio_alloc_bioset, and implement the percpu cache allocation logic in a helper called from bio_alloc_bioset. This allows any bio_alloc_bioset user to use the percpu caches instead of having the functionality tied to struct kiocb. Signed-off-by: Mike Snitzer [hch: refactored a bit] Signed-off-by: Christoph Hellwig Link: https://lore.kernel.org/r/20220324203526.62306-2-snitzer@kernel.org Signed-off-by: Jens Axboe

block: fix offset/size check in bio_trim()

2022-04-14T16:15:24Z

Unit of bio->bi_iter.bi_size is bytes, but unit of offset/size is sector. Fix the above issue in checking offset/size in bio_trim(). Fixes: e83502ca5f1e ("block: fix argument type of bio_trim()") Cc: Chaitanya Kulkarni Signed-off-by: Ming Lei Link: https://lore.kernel.org/r/20220414084443.1736850-1-ming.lei@redhat.com Signed-off-by: Jens Axboe

Merge tag 'for-5.18/write-streams-2022-03-18' of git://git.kernel.dk/linux-block

2022-03-26T18:51:46Z

Pull NVMe write streams removal from Jens Axboe: "This removes the write streams support in NVMe. No vendor ever really shipped working support for this, and they are not interested in supporting it. With the NVMe support gone, we have nothing in the tree that supports this. Remove passing around of the hints. The only discussion point in this patchset imho is the fact that the file specific write hint setting/getting fcntl helpers will now return -1/EINVAL like they did before we supported write hints. No known applications use these functions, I only know of one prototype that I help do for RocksDB, and that's not used. That said, with a change like this, it's always a bit controversial. Alternatively, we could just make them return 0 and pretend it worked. It's placement based hints after all" * tag 'for-5.18/write-streams-2022-03-18' of git://git.kernel.dk/linux-block: fs: remove fs.f_write_hint fs: remove kiocb.ki_hint block: remove the per-bio/request write hint nvme: remove support or stream based temperature hint