1. 24 5月, 2010 1 次提交
  2. 19 5月, 2010 20 次提交
  3. 30 4月, 2010 1 次提交
    • D
      xfs: add a shrinker to background inode reclaim · 9bf729c0
      Dave Chinner 提交于
      On low memory boxes or those with highmem, kernel can OOM before the
      background reclaims inodes via xfssyncd. Add a shrinker to run inode
      reclaim so that it inode reclaim is expedited when memory is low.
      
      This is more complex than it needs to be because the VM folk don't
      want a context added to the shrinker infrastructure. Hence we need
      to add a global list of XFS mount structures so the shrinker can
      traverse them.
      Signed-off-by: NDave Chinner <dchinner@redhat.com>
      Reviewed-by: NChristoph Hellwig <hch@lst.de>
      9bf729c0
  4. 17 4月, 2010 1 次提交
  5. 30 3月, 2010 1 次提交
    • T
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo 提交于
      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: NTejun Heo <tj@kernel.org>
      Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  6. 17 3月, 2010 3 次提交
  7. 06 3月, 2010 5 次提交
  8. 05 3月, 2010 2 次提交
    • C
      quota: drop permission checks from xfs_fs_set_xstate/xfs_fs_set_xquota · ac0e7737
      Christoph Hellwig 提交于
      We already do these checks in the generic code.
      Signed-off-by: NChristoph Hellwig <hch@lst.de>
      Signed-off-by: NJan Kara <jack@suse.cz>
      ac0e7737
    • C
      quota: clean up Q_XQUOTASYNC · 8c4e4acd
      Christoph Hellwig 提交于
      Currently Q_XQUOTASYNC calls into the quota_sync method, but XFS does something
      entirely different in it than the rest of the filesystems.  xfs_quota which
      calls Q_XQUOTASYNC expects an asynchronous data writeout to flush delayed
      allocations, while the "VFS" quota support wants to flush changes to the quota
      file.
      
      So make Q_XQUOTASYNC call into the writeback code directly and make the
      quota_sync method optional as XFS doesn't need in the sense expected by the
      rest of the quota code.
      
      GFS2 was using limited XFS-style quota and has a quota_sync method fitting
      neither the style used by vfs_quota_sync nor xfs_fs_quota_sync.  I left it
      in for now as per discussion with Steve it expects to be called from the
      sync path this way.
      Signed-off-by: NChristoph Hellwig <hch@lst.de>
      Signed-off-by: NJan Kara <jack@suse.cz>
      8c4e4acd
  9. 02 3月, 2010 6 次提交