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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() ... |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.