1. 06 Jan, 2006 5 commits
  2. 18 Nov, 2005 1 commit
  3. 09 Nov, 2005 4 commits
    • NeilBrown's avatar
      [PATCH] md: support BIO_RW_BARRIER for md/raid1 · a9701a30
      NeilBrown authored
      
      
      We can only accept BARRIER requests if all slaves handle
      barriers, and that can, of course, change with time....
      
      So we keep track of whether the whole array seems safe for barriers,
      and also whether each individual rdev handles barriers.
      
      We initially assumes barriers are OK.
      
      When writing the superblock we try a barrier, and if that fails, we flag
      things for no-barriers.  This will usually clear the flags fairly quickly.
      
      If writing the superblock finds that BIO_RW_BARRIER is -ENOTSUPP, we need to
      resubmit, so introduce function "md_super_wait" which waits for requests to
      finish, and retries ENOTSUPP requests without the barrier flag.
      
      When writing the real raid1, write requests which were BIO_RW_BARRIER but
      which aresn't supported need to be retried.  So raid1d is enhanced to do this,
      and when any bio write completes (i.e.  no retry needed) we remove it from the
      r1bio, so that devices needing retry are easy to find.
      
      We should hardly ever get -ENOTSUPP errors when writing data to the raid.
      It should only happen if:
        1/ the device used to support BARRIER, but now doesn't.  Few devices
           change like this, though raid1 can!
      or
        2/ the array has no persistent superblock, so there was no opportunity to
           pre-test for barriers when writing the superblock.
      Signed-off-by: default avatarNeil Brown <neilb@cse.unsw.edu.au>
      Signed-off-by: default avatarNeil Brown <neilb@suse.de>
      Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      a9701a30
    • NeilBrown's avatar
      [PATCH] md: make md on-disk bitmaps not host-endian · bd926c63
      NeilBrown authored
      
      
      Current bitmaps use set_bit et.al and so are host-endian, which means
      not-portable.  Oops.
      
      Define a new version number (4) for which bitmaps are little-endian.
      Signed-off-by: default avatarNeil Brown <neilb@suse.de>
      Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      bd926c63
    • NeilBrown's avatar
      [PATCH] md: convert 'faulty' and 'in_sync' fields to bits in 'flags' field · b2d444d7
      NeilBrown authored
      
      
      This has the advantage of removing the confusion caused by 'rdev_t' and
      'mddev_t' both having 'in_sync' fields.
      Signed-off-by: default avatarNeil Brown <neilb@suse.de>
      Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      b2d444d7
    • Olaf Hering's avatar
      [PATCH] changing CONFIG_LOCALVERSION rebuilds too much, for no good reason · 733482e4
      Olaf Hering authored
      
      
      This patch removes almost all inclusions of linux/version.h.  The 3
      #defines are unused in most of the touched files.
      
      A few drivers use the simple KERNEL_VERSION(a,b,c) macro, which is
      unfortunatly in linux/version.h.
      
      There are also lots of #ifdef for long obsolete kernels, this was not
      touched.  In a few places, the linux/version.h include was move to where
      the LINUX_VERSION_CODE was used.
      
      quilt vi `find * -type f -name "*.[ch]"|xargs grep -El '(UTS_RELEASE|LINUX_VERSION_CODE|KERNEL_VERSION|linux/version.h)'|grep -Ev '(/(boot|coda|drm)/|~$)'`
      
      search pattern:
      /UTS_RELEASE\|LINUX_VERSION_CODE\|KERNEL_VERSION\|linux\/\(utsname\|version\).h
      Signed-off-by: default avatarOlaf Hering <olh@suse.de>
      Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      733482e4
  4. 28 Oct, 2005 1 commit
  5. 09 Sep, 2005 7 commits
  6. 04 Aug, 2005 2 commits
  7. 27 Jul, 2005 1 commit
  8. 15 Jul, 2005 1 commit
  9. 22 Jun, 2005 12 commits