1. 23 Aug, 2013 2 commits
  2. 20 Mar, 2012 1 commit
  3. 10 May, 2011 2 commits
    • Ryusuke Konishi's avatar
      nilfs2: super root size should change depending on inode size · 6c6de1aa
      Ryusuke Konishi authored
      
      
      The size of super root structure depends on inode size, so
      NILFS_SR_BYTES macro should be a function of the inode size.  This
      fixes the issue.
      
      Even though a different size value will be written for a possible
      future filesystem with extended inode, but fortunately this does not
      break disk format compatibility.
      Signed-off-by: default avatarRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
      6c6de1aa
    • Ryusuke Konishi's avatar
      nilfs2: get rid of private page allocator · 1cb2d38c
      Ryusuke Konishi authored
      
      
      Previously, nilfs was cloning pages for mmapped region to freeze their
      data and ensure consistency of checksum during writeback cycles.  A
      private page allocator was used for this page cloning.  But, we no
      longer need to do that since clear_page_dirty_for_io function sets up
      pte so that vm_ops->page_mkwrite function is called right before the
      mmapped pages are modified and nilfs_page_mkwrite function can safely
      wait for the pages to be written back to disk.
      
      So, this stops making a copy of mmapped pages during writeback, and
      eliminates the private page allocation and deallocation functions from
      nilfs.
      Signed-off-by: default avatarRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
      1cb2d38c
  4. 10 Mar, 2011 1 commit
    • Jens Axboe's avatar
      block: kill off REQ_UNPLUG · 721a9602
      Jens Axboe authored
      
      
      With the plugging now being explicitly controlled by the
      submitter, callers need not pass down unplugging hints
      to the block layer. If they want to unplug, it's because they
      manually plugged on their own - in which case, they should just
      unplug at will.
      Signed-off-by: default avatarJens Axboe <jaxboe@fusionio.com>
      721a9602
  5. 23 Oct, 2010 1 commit
  6. 07 Aug, 2010 1 commit
    • Christoph Hellwig's avatar
      block: unify flags for struct bio and struct request · 7b6d91da
      Christoph Hellwig authored
      
      
      Remove the current bio flags and reuse the request flags for the bio, too.
      This allows to more easily trace the type of I/O from the filesystem
      down to the block driver.  There were two flags in the bio that were
      missing in the requests:  BIO_RW_UNPLUG and BIO_RW_AHEAD.  Also I've
      renamed two request flags that had a superflous RW in them.
      
      Note that the flags are in bio.h despite having the REQ_ name - as
      blkdev.h includes bio.h that is the only way to go for now.
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      Signed-off-by: default avatarJens Axboe <jaxboe@fusionio.com>
      7b6d91da
  7. 10 May, 2010 4 commits
  8. 30 Mar, 2010 1 commit
    • Tejun Heo's avatar
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo authored
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
      
      percpu.h is included by sched.h and module.h and thus ends up being
      included when building most .c files.  percpu.h includes slab.h which
      in turn includes gfp.h making everything defined by the two files
      universally available and complicating inclusion dependencies.
      
      percpu.h -> slab.h dependency is about to be removed.  Prepare for
      this change by updating users of gfp and slab facilities include those
      headers directly instead of assuming availability.  As this conversion
      needs to touch large number of source files, the following script is
      used as the basis of conversion.
      
        http://userweb.kernel.org/~tj/misc/slabh-sweep.py
      
      
      
      The script does the followings.
      
      * Scan files for gfp and slab usages and update includes such that
        only the necessary includes are there.  ie. if only gfp is used,
        gfp.h, if slab is used, slab.h.
      
      * When the script inserts a new include, it looks at the include
        blocks and try to put the new include such that its order conforms
        to its surrounding.  It's put in the include block which contains
        core kernel includes, in the same order that the rest are ordered -
        alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
        doesn't seem to be any matching order.
      
      * If the script can't find a place to put a new include (mostly
        because the file doesn't have fitting include block), it prints out
        an error message indicating which .h file needs to be added to the
        file.
      
      The conversion was done in the following steps.
      
      1. The initial automatic conversion of all .c files updated slightly
         over 4000 files, deleting around 700 includes and adding ~480 gfp.h
         and ~3000 slab.h inclusions.  The script emitted errors for ~400
         files.
      
      2. Each error was manually checked.  Some didn't need the inclusion,
         some needed manual addition while adding it to implementation .h or
         embedding .c file was more appropriate for others.  This step added
         inclusions to around 150 files.
      
      3. The script was run again and the output was compared to the edits
         from #2 to make sure no file was left behind.
      
      4. Several build tests were done and a couple of problems were fixed.
         e.g. lib/decompress_*.c used malloc/free() wrappers around slab
         APIs requiring slab.h to be added manually.
      
      5. The script was run on all .h files but without automatically
         editing them as sprinkling gfp.h and slab.h inclusions around .h
         files could easily lead to inclusion dependency hell.  Most gfp.h
         inclusion directives were ignored as stuff from gfp.h was usually
         wildly available and often used in preprocessor macros.  Each
         slab.h inclusion directive was examined and added manually as
         necessary.
      
      6. percpu.h was updated not to include slab.h.
      
      7. Build test were done on the following configurations and failures
         were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
         distributed build env didn't work with gcov compiles) and a few
         more options had to be turned off depending on archs to make things
         build (like ipr on powerpc/64 which failed due to missing writeq).
      
         * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
         * powerpc and powerpc64 SMP allmodconfig
         * sparc and sparc64 SMP allmodconfig
         * ia64 SMP allmodconfig
         * s390 SMP allmodconfig
         * alpha SMP allmodconfig
         * um on x86_64 SMP allmodconfig
      
      8. percpu.h modifications were reverted so that it could be applied as
         a separate patch and serve as bisection point.
      
      Given the fact that I had only a couple of failures from tests on step
      6, I'm fairly confident about the coverage of this conversion patch.
      If there is a breakage, it's likely to be something in one of the arch
      headers which should be easily discoverable easily on most builds of
      the specific arch.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Guess-its-ok-by: default avatarChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  9. 23 Mar, 2010 1 commit
  10. 14 Mar, 2010 3 commits
  11. 13 Feb, 2010 1 commit
  12. 30 Nov, 2009 4 commits
  13. 29 Nov, 2009 1 commit
  14. 14 Sep, 2009 1 commit
    • Ryusuke Konishi's avatar
      nilfs2: use GFP_NOIO for bio_alloc instead of GFP_NOWAIT · c1b353f0
      Ryusuke Konishi authored
      
      
      Alberto Bertogli advised me about bio_alloc() use in nilfs:
      On Sat, 13 Jun 2009 22:52:40 -0300, Alberto Bertogli wrote:
      > By the way, those bio_alloc()s are using GFP_NOWAIT but it looks
      > like they could use at least GFP_NOIO or GFP_NOFS, since the caller
      > can (and sometimes do) sleep. The only caller is nilfs_submit_bh(),
      > which calls nilfs_submit_seg_bio() which can sleep calling
      > wait_for_completion().
      
      This takes in the comment and replaces the use of GFP_NOWAIT flag with
      GFP_NOIO.
      Signed-off-by: default avatarRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
      c1b353f0
  15. 10 Jun, 2009 2 commits
  16. 07 Apr, 2009 2 commits