user/sven/linux.git/include/linux/bio.h, branch v3.12.43

bio-integrity: add "bip_max_vcnt" into struct bio_integrity_payload

2014-09-02T09:41:56Z

commit cbcd1054a1fd2aa980fc11ff28e436fc4aaa2d54 upstream. Commit 08778795 ("block: Fix nr_vecs for inline integrity vectors") from Martin introduces the function bip_integrity_vecs(get the useful vectors) to fix the issue about nr_vecs for inline integrity vectors that reported by David Milburn. But it seems that bip_integrity_vecs() will return the wrong number if the bio is not based on any bio_set for some reason(bio->bi_pool == NULL), because in that case, the bip_inline_vecs[0] is malloced directly. So here we add the bip_max_vcnt to record the count of vector slots, and cleanup the function bip_integrity_vecs(). Signed-off-by: Gu Zheng Cc: Martin K. Petersen Cc: Kent Overstreet Signed-off-by: Jens Axboe

xtensa: remove the second argument of __bio_kmap_atomic()

2013-07-08T08:23:15Z

kmap_atomic allows only one argument now, just remove the unused 'kmtype'. Signed-off-by: Zhao Hongjiang Acked-by: Geert Uytterhoeven Signed-off-by: Chris Zankel

bio-integrity: Add explicit field for owner of bip_buf

2013-03-23T21:26:34Z

This was the only real user of BIO_CLONED, which didn't have very clear semantics. Convert to its own flag so we can get rid of BIO_CLONED. Signed-off-by: Kent Overstreet CC: Jens Axboe CC: Martin K. Petersen

block: Add an explicit bio flag for bios that own their bvec

2013-03-23T21:26:33Z

This is for the new bio splitting code. When we split a bio, if the split occured on a bvec boundry we reuse the bvec for the new bio. But that means bio_free() can't free it, hence the explicit flag. Signed-off-by: Kent Overstreet CC: Jens Axboe Acked-by: Tejun Heo

block: Add bio_alloc_pages()

2013-03-23T21:26:31Z

More utility code to replace stuff that's getting open coded. Signed-off-by: Kent Overstreet CC: Jens Axboe CC: NeilBrown

block: Add bio_for_each_segment_all()

2013-03-23T21:26:28Z

__bio_for_each_segment() iterates bvecs from the specified index instead of bio->bv_idx. Currently, the only usage is to walk all the bvecs after the bio has been advanced by specifying 0 index. For immutable bvecs, we need to split these apart; bio_for_each_segment() is going to have a different implementation. This will also help document the intent of code that's using it - bio_for_each_segment_all() is only legal to use for code that owns the bio. Signed-off-by: Kent Overstreet CC: Jens Axboe CC: Neil Brown CC: Boaz Harrosh

block: Add bio_copy_data()

2013-03-23T21:15:37Z

This gets open coded quite a bit and it's tricky to get right, so make a generic version and convert some existing users over to it instead. Signed-off-by: Kent Overstreet CC: Jens Axboe

block: Add submit_bio_wait(), remove from md

2013-03-23T21:15:32Z

Random cleanup - this code was duplicated and it's not really specific to md. Also added the ability to return the actual error code. Signed-off-by: Kent Overstreet CC: Jens Axboe CC: NeilBrown Acked-by: Tejun Heo

block: Add bio_end_sector()

2013-03-23T21:15:29Z

Just a little convenience macro - main reason to add it now is preparing for immutable bio vecs, it'll reduce the size of the patch that puts bi_sector/bi_size/bi_idx into a struct bvec_iter. Signed-off-by: Kent Overstreet CC: Jens Axboe CC: Lars Ellenberg CC: Jiri Kosina CC: Alasdair Kergon CC: dm-devel@redhat.com CC: Neil Brown CC: Martin Schwidefsky CC: Heiko Carstens CC: linux-s390@vger.kernel.org CC: Chris Mason CC: Steven Whitehouse Acked-by: Steven Whitehouse

block: Add bio_advance()

2013-03-23T21:15:27Z

This is prep work for immutable bio vecs; we first want to centralize where bvecs are modified. Next two patches convert some existing code to use this function. Signed-off-by: Kent Overstreet CC: Jens Axboe