1. 12 2月, 2013 1 次提交
  2. 06 1月, 2012 1 次提交
    • J
      9p: Reduce object size with CONFIG_NET_9P_DEBUG · 5d385153
      Joe Perches 提交于
      Reduce object size by deduplicating formats.
      
      Use vsprintf extension %pV.
      Rename P9_DPRINTK uses to p9_debug, align arguments.
      Add function for _p9_debug and macro to add __func__.
      Add missing "\n"s to p9_debug uses.
      Remove embedded function names as p9_debug adds it.
      Remove P9_EPRINTK macro and convert use to pr_<level>.
      Add and use pr_fmt and pr_<level>.
      
      $ size fs/9p/built-in.o*
         text	   data	    bss	    dec	    hex	filename
        62133	    984	  16000	  79117	  1350d	fs/9p/built-in.o.new
        67342	    984	  16928	  85254	  14d06	fs/9p/built-in.o.old
      $ size net/9p/built-in.o*
         text	   data	    bss	    dec	    hex	filename
        88792	   4148	  22024	 114964	  1c114	net/9p/built-in.o.new
        94072	   4148	  23232	 121452	  1da6c	net/9p/built-in.o.old
      Signed-off-by: NJoe Perches <joe@perches.com>
      Signed-off-by: NEric Van Hensbergen <ericvh@gmail.com>
      5d385153
  3. 16 4月, 2011 1 次提交
  4. 23 3月, 2011 2 次提交
  5. 15 3月, 2011 2 次提交
  6. 28 10月, 2010 1 次提交
  7. 30 8月, 2010 1 次提交
  8. 03 8月, 2010 2 次提交
  9. 05 4月, 2010 1 次提交
  10. 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
  11. 06 3月, 2010 1 次提交
  12. 20 12月, 2008 1 次提交
  13. 14 11月, 2008 1 次提交
  14. 19 4月, 2008 1 次提交
  15. 07 2月, 2008 1 次提交
  16. 18 10月, 2007 1 次提交
    • L
      9p: attach-per-user · ba17674f
      Latchesar Ionkov 提交于
      The 9P2000 protocol requires the authentication and permission checks to be
      done in the file server. For that reason every user that accesses the file
      server tree has to authenticate and attach to the server separately.
      Multiple users can share the same connection to the server.
      
      Currently v9fs does a single attach and executes all I/O operations as a
      single user. This makes using v9fs in multiuser environment unsafe as it
      depends on the client doing the permission checking.
      
      This patch improves the 9P2000 support by allowing every user to attach
      separately. The patch defines three modes of access (new mount option
      'access'):
      
      - attach-per-user (access=user) (default mode for 9P2000.u)
       If a user tries to access a file served by v9fs for the first time, v9fs
       sends an attach command to the server (Tattach) specifying the user. If
       the attach succeeds, the user can access the v9fs tree.
       As there is no uname->uid (string->integer) mapping yet, this mode works
       only with the 9P2000.u dialect.
      
      - allow only one user to access the tree (access=<uid>)
       Only the user with uid can access the v9fs tree. Other users that attempt
       to access it will get EPERM error.
      
      - do all operations as a single user (access=any) (default for 9P2000)
       V9fs does a single attach and all operations are done as a single user.
       If this mode is selected, the v9fs behavior is identical with the current
       one.
      Signed-off-by: NLatchesar Ionkov <lucho@ionkov.net>
      Signed-off-by: NEric Van Hensbergen <ericvh@gmail.com>
      ba17674f
  17. 23 8月, 2007 1 次提交
  18. 15 7月, 2007 1 次提交
  19. 19 2月, 2007 1 次提交
    • E
      9p: implement optional loose read cache · e03abc0c
      Eric Van Hensbergen 提交于
      While cacheing is generally frowned upon in the 9p world, it has its
      place -- particularly in situations where the remote file system is
      exclusive and/or read-only.  The vacfs views of venti content addressable
      store are a real-world instance of such a situation.  To facilitate higher
      performance for these workloads (and eventually use the fscache patches),
      we have enabled a "loose" cache mode which does not attempt to maintain
      any form of consistency on the page-cache or dcache.  This results in over
      two orders of magnitude performance improvement for cacheable block reads
      in the Bonnie benchmark.  The more aggressive use of the dcache also seems
      to improve metadata operational performance.
      Signed-off-by: NEric Van Hensbergen <ericvh@gmail.com>
      e03abc0c
  20. 27 1月, 2007 1 次提交
  21. 04 12月, 2006 1 次提交
  22. 01 7月, 2006 1 次提交
  23. 26 3月, 2006 1 次提交
  24. 03 3月, 2006 2 次提交
  25. 09 1月, 2006 2 次提交
  26. 28 9月, 2005 1 次提交
    • L
      [PATCH] v9fs: fix races in fid allocation · 0b8dd177
      Latchesar Ionkov 提交于
      Fid management cleanup.  The patch attempts to fix the races in dentry's
      fid management.
      
      Dentries don't keep the opened fids anymore, they are moved to the file
      structs.  Ideally there should be no more than one fid with fidcreate equal
      to zero in the dentry's list of fids.
      
      v9fs_fid_create initializes the important fields (fid, fidcreated) before
      v9fs_fid is added to the list.  v9fs_fid_lookup returns only fids that are
      not created by v9fs_create.  v9fs_fid_get_created returns the fid created
      by the same process by v9fs_create (if any) and removes it from dentry's
      list
      Signed-off-by: NLatchesar Ionkov <lucho@ionkov.net>
      Cc: Eric Van Hensbergen <ericvh@gmail.com>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      0b8dd177
  27. 10 9月, 2005 1 次提交