lustre/kernel_patches/patches/block-pass-bio-into-integrity_processing_fn-rhel7.patch

   1 Having struct bio allows us to do more in the genrate/verify_fn,
   2 like copying a known good guard tag already available rather than
   3 calculating it.
   4
   5 Index: linux-3.10.0-862.9.1.el7/fs/bio-integrity.c
   6 ===================================================================
   7 --- linux-3.10.0-862.9.1.el7.orig/fs/bio-integrity.c
   8 +++ linux-3.10.0-862.9.1.el7/fs/bio-integrity.c
   9 @@ -334,6 +334,8 @@ static void bio_integrity_generate(struc
  10                 bix.data_size = bv->bv_len;
  11                 bix.prot_buf = prot_buf;
  12                 bix.sector = sector;
  13 +               bix.bi_idx = i;
  14 +               bix.bio = bio;
  15
  16                 generate_fn(&bix);
  17
  18 @@ -485,6 +487,8 @@ static int bio_integrity_verify(struct b
  19                 bix.data_size = bv->bv_len;
  20                 bix.prot_buf = prot_buf;
  21                 bix.sector = sector;
  22 +               bix.bi_idx = i;
  23 +               bix.bio = bio;
  24
  25                 ret = verify_fn(&bix);
  26
  27 Index: linux-3.10.0-862.9.1.el7/include/linux/blkdev.h
  28 ===================================================================
  29 --- linux-3.10.0-862.9.1.el7.orig/include/linux/blkdev.h
  30 +++ linux-3.10.0-862.9.1.el7/include/linux/blkdev.h
  31 @@ -1699,7 +1699,9 @@ struct blk_integrity_exchg {
  32         sector_t                sector;
  33         unsigned int            data_size;
  34         unsigned short          sector_size;
  35 +       unsigned short          bi_idx;
  36         const char              *disk_name;
  37 +       struct bio              *bio;
  38  };
  39
  40  typedef void (integrity_set_tag_fn) (void *, void *, unsigned int);