• Linus Torvalds's avatar
    Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md · e5021876
    Linus Torvalds authored
    Pull MD updates from Shaohua Li:
     - Add Partial Parity Log (ppl) feature found in Intel IMSM raid array
       by Artur Paszkiewicz. This feature is another way to close RAID5
       writehole. The Linux implementation is also available for normal
       RAID5 array if specific superblock bit is set.
     - A number of md-cluser fixes and enabling md-cluster array resize from
       Guoqing Jiang
     - A bunch of patches from Ming Lei and Neil Brown to rewrite MD bio
       handling related code. Now MD doesn't directly access bio bvec,
       bi_phys_segments and uses modern bio API for bio split.
     - Improve RAID5 IO pattern to improve performance for hard disk based
       RAID5/6 from me.
     - Several patches from Song Liu to speed up raid5-cache recovery and
       allow raid5 cache feature disabling in runtime.
     - Fix a performance regression in raid1 resync from Xiao Ni.
     - Other cleanup and fixes from various people.
    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md: (84 commits)
      md/raid10: skip spare disk as 'first' disk
      md/raid1: Use a new variable to count flighting sync requests
      md: clear WantReplacement once disk is removed
      md/raid1/10: remove unused queue
      md: handle read-only member devices better.
      md/raid10: wait up frozen array in handle_write_completed
      uapi: fix linux/raid/md_p.h userspace compilation error
      md-cluster: Fix a memleak in an error handling path
      md: support disabling of create-on-open semantics.
      md: allow creation of mdNNN arrays via md_mod/parameters/new_array
      raid5-ppl: use a single mempool for ppl_io_unit and header_page
      md/raid0: fix up bio splitting.
      md/linear: improve bio splitting.
      md/raid5: make chunk_aligned_read() split bios more cleanly.
      md/raid10: simplify handle_read_error()
      md/raid10: simplify the splitting of requests.
      md/raid1: factor out flush_bio_list()
      md/raid1: simplify handle_read_error().
      Revert "block: introduce bio_copy_data_partial"
      md/raid1: simplify alloc_behind_master_bio()
md-cluster.txt 12.4 KB