1. 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
  2. 16 4月, 2011 1 次提交
  3. 15 3月, 2011 2 次提交
  4. 13 1月, 2011 1 次提交
    • A
      switch 9p · 98cd3fb0
      Al Viro 提交于
      here we actually *want* ->d_op for root; setting it allows to get rid
      of kludge in v9fs_kill_super() since now we have proper ->d_release()
      for root and don't need to call it manually.
      Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      98cd3fb0
  5. 07 1月, 2011 1 次提交
    • N
      fs: change d_delete semantics · fe15ce44
      Nick Piggin 提交于
      Change d_delete from a dentry deletion notification to a dentry caching
      advise, more like ->drop_inode. Require it to be constant and idempotent,
      and not take d_lock. This is how all existing filesystems use the callback
      anyway.
      
      This makes fine grained dentry locking of dput and dentry lru scanning
      much simpler.
      Signed-off-by: NNick Piggin <npiggin@kernel.dk>
      fe15ce44
  6. 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
  7. 28 3月, 2009 1 次提交
  8. 20 12月, 2008 1 次提交
  9. 15 7月, 2007 1 次提交
  10. 22 5月, 2007 1 次提交
    • A
      Detach sched.h from mm.h · e8edc6e0
      Alexey Dobriyan 提交于
      First thing mm.h does is including sched.h solely for can_do_mlock() inline
      function which has "current" dereference inside. By dealing with can_do_mlock()
      mm.h can be detached from sched.h which is good. See below, why.
      
      This patch
      a) removes unconditional inclusion of sched.h from mm.h
      b) makes can_do_mlock() normal function in mm/mlock.c
      c) exports can_do_mlock() to not break compilation
      d) adds sched.h inclusions back to files that were getting it indirectly.
      e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were
         getting them indirectly
      
      Net result is:
      a) mm.h users would get less code to open, read, preprocess, parse, ... if
         they don't need sched.h
      b) sched.h stops being dependency for significant number of files:
         on x86_64 allmodconfig touching sched.h results in recompile of 4083 files,
         after patch it's only 3744 (-8.3%).
      
      Cross-compile tested on
      
      	all arm defconfigs, all mips defconfigs, all powerpc defconfigs,
      	alpha alpha-up
      	arm
      	i386 i386-up i386-defconfig i386-allnoconfig
      	ia64 ia64-up
      	m68k
      	mips
      	parisc parisc-up
      	powerpc powerpc-up
      	s390 s390-up
      	sparc sparc-up
      	sparc64 sparc64-up
      	um-x86_64
      	x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig
      
      as well as my two usual configs.
      Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      e8edc6e0
  11. 09 5月, 2007 1 次提交
  12. 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
  13. 26 3月, 2006 2 次提交
  14. 03 3月, 2006 1 次提交
    • E
      [PATCH] v9fs: simplify fid mapping · 46f6dac2
      Eric Van Hensbergen 提交于
      v9fs has been plagued by an over-complicated approach trying to map Linux
      dentry semantics to Plan 9 fid semantics.  Our previous approach called for
      aggressive flushing of the dcache resulting in several problems (including
      wierd cwd behavior when running /bin/pwd).
      
      This patch dramatically simplifies our handling of this fid management.  Fids
      will not be clunked as promptly, but the new approach is more functionally
      correct.  We now clunk un-open fids only when their dentry ref_count reaches 0
      (and d_delete is called).
      
      Another simplification is we no longer seek to match fids to the process-id or
      uid of the action initiator.  The uid-matching will need to be revisited when
      we fix the security model.
      Signed-off-by: NEric Van Hensbergen <ericvh@gmail.com>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      46f6dac2
  15. 09 1月, 2006 2 次提交
  16. 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
  17. 10 9月, 2005 1 次提交